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Prehnite Finger Casts after Anhydrite from the Prospect Park Quarry, New Jersey

As many of you know, Brett and I have a great appreciation for minerals from the New Jersey Trap Rocks (Zeolites and associated species).  Our father collected in these localities as early as the 1950’s, and his love for these specimens passed to us as kids.  As a result, one of our favorite minerals is Prehnite, which is well known throughout the New Jersey Trap Rock quarries.  The diverse amount of habits, forms and colors of Prehnites from a relatively small area is impressive and gives collectors of this material a great variety of specimens to seek out for their collections.

Over the years, the various quarries in northern New Jersey have produced superb, interesting and unique specimens including some of the most well-known Prehnites from any region in the world.  The Prospect Park Quarry is arguably the most famous mineral producing basalt quarry in New Jersey and for over a century has provided collectors with impressive display specimens, including some of the most recognizable Prehnites extant.  Many of these Prehnites formed casts (epimorphs), which is a type of pseudomorphism whereby preexisting crystals of Anhydrite were coated and later dissolved by the more stable Prehnite, creating slender, striated and somewhat blocky hollow cavities.  Depending upon the original shape of the Anhydrite, the Prehnites can sometimes leave unique finger-shaped casts.  These “fingers” are quite possibly the most desirable form of casts for Prehnite from New Jersey.    

During the latter half of 2010, one of the most momentous Prehnite discoveries was made at the Prospect Park Quarry.  A large number of some of the finest quality Prehnite casts were collected in a series of pockets in the middle of the quarry in a dome-shaped structure measuring approximately 40 x 40 x 40 feet (approximately 12 x 12 x 12 meters) that is locally referred to as a diapir.  This discovery stands as one of the most impressive and important discoveries, not only in recent years, but perhaps in the history of the Prospect Park Quarry.  The best specimens from the discovery show an amazingly bright vitreous luster, with superb gemminess for the material, along with excellent form and aesthetics.  Perhaps the most important aspect of the specimens is the fact that the Prehnites show DISTINCT crystallization that can easily be seen with the naked eye – a rare feature for this type of Prehnite as the crystals are often very small and nearly amorphous.   Many of the most desirable qualities of great Prehnites from any New Jersey locality are seen in these wonderful specimens.

This discovery can best be described as bittersweet as it will more than likely be the last major production of specimens from Prospect Park.  The quarry is currently in the process of being filled in for a housing development, and will never again produce specimens.  The Prehnites collected in 2010 will almost certainly go down as the “last hurrah” for the great Prospect Park Quarry.

As somebody who has literally seen thousands of Prehnite casts from New Jersey, I can say without fear of contradiction that these newly collected specimens are some of the finest examples for what they are.  I personally selected the following specimens over the course of the last few months and accumulated a good representative lot of these now contemporary classic Prehnites.  If you’re a collector of New Jersey minerals, unique pseudomorphs/epimorphs, or just good quality display specimens, do not miss out on these Prehnites, as they could be the last specimens we see from Prospect Park.  Once the quarry is completely filled in, the value of good Prospect Park specimens will more than likely increase.

Please note that the specimens shift in color from a vivid green to a pastel yellow-green depending upon the light in which they are viewed.  Our specimens were photographed under mercury lights creating a very pleasing color.


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(click on the pictures to enlarge)

Prehnite finger casts after Anhydrite from Prospect Park Quarry (Sowerbutt Quarry; Vandermade Quarry; Warren Brothers Quarry), Prospect Park, Passaic County, New Jersey [./preh311/preh3111a.JPG] Prehnite finger casts after Anhydrite from Prospect Park Quarry (Sowerbutt Quarry; Vandermade Quarry; Warren Brothers Quarry), Prospect Park, Passaic County, New Jersey [./preh311/preh3111b.JPG] Prehnite finger casts after Anhydrite from Prospect Park Quarry (Sowerbutt Quarry; Vandermade Quarry; Warren Brothers Quarry), Prospect Park, Passaic County, New Jersey [./preh311/preh3111c.JPG] Prehnite finger casts after Anhydrite from Prospect Park Quarry (Sowerbutt Quarry; Vandermade Quarry; Warren Brothers Quarry), Prospect Park, Passaic County, New Jersey [./preh311/preh3111d.JPG] Prehnite finger casts after Anhydrite from Prospect Park Quarry (Sowerbutt Quarry; Vandermade Quarry; Warren Brothers Quarry), Prospect Park, Passaic County, New Jersey [./preh311/preh3111e.JPG] Prehnite finger casts after Anhydrite from Prospect Park Quarry (Sowerbutt Quarry; Vandermade Quarry; Warren Brothers Quarry), Prospect Park, Passaic County, New Jersey [./preh311/preh3111f.JPG] Prehnite finger casts after Anhydrite from Prospect Park Quarry (Sowerbutt Quarry; Vandermade Quarry; Warren Brothers Quarry), Prospect Park, Passaic County, New Jersey [./preh311/preh3111g.JPG] Prehnite finger casts after Anhydrite from Prospect Park Quarry (Sowerbutt Quarry; Vandermade Quarry; Warren Brothers Quarry), Prospect Park, Passaic County, New Jersey [./preh311/preh3111h.JPG] Prehnite finger casts after Anhydrite from Prospect Park Quarry (Sowerbutt Quarry; Vandermade Quarry; Warren Brothers Quarry), Prospect Park, Passaic County, New Jersey [./preh311/preh3111i.JPG]


No. PREH3111 - $ 650.00

Prehnite finger casts after Anhydrite

Locality: Prospect Park Quarry (Sowerbutt Quarry; Vandermade Quarry; Warren Brothers Quarry), Prospect Park, Passaic County, New Jersey

Specimen Size: 8.2 x 7.6 x 4.3 cm (small cabinet)


A great small cabinet sized display specimen with several aesthetic, undamaged, finger-shaped casts after Anhydrite showing superb vitreous luster, beautiful green color, and excellent gemminess for the material. The piece displays well from several angles. A worthwhile and affordable display specimen of this contemporary classic material.

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(click on the pictures to enlarge)

Prehnite finger cast after Anhydrite from Prospect Park Quarry (Sowerbutt Quarry; Vandermade Quarry; Warren Brothers Quarry), Prospect Park, Passaic County, New Jersey [./preh311/preh3112a.JPG] Prehnite finger cast after Anhydrite from Prospect Park Quarry (Sowerbutt Quarry; Vandermade Quarry; Warren Brothers Quarry), Prospect Park, Passaic County, New Jersey [./preh311/preh3112b.JPG] Prehnite finger cast after Anhydrite from Prospect Park Quarry (Sowerbutt Quarry; Vandermade Quarry; Warren Brothers Quarry), Prospect Park, Passaic County, New Jersey [./preh311/preh3112c.JPG] Prehnite finger cast after Anhydrite from Prospect Park Quarry (Sowerbutt Quarry; Vandermade Quarry; Warren Brothers Quarry), Prospect Park, Passaic County, New Jersey [./preh311/preh3112d.JPG] Prehnite finger cast after Anhydrite from Prospect Park Quarry (Sowerbutt Quarry; Vandermade Quarry; Warren Brothers Quarry), Prospect Park, Passaic County, New Jersey [./preh311/preh3112e.JPG] Prehnite finger cast after Anhydrite from Prospect Park Quarry (Sowerbutt Quarry; Vandermade Quarry; Warren Brothers Quarry), Prospect Park, Passaic County, New Jersey [./preh311/preh3112f.JPG] Prehnite finger cast after Anhydrite from Prospect Park Quarry (Sowerbutt Quarry; Vandermade Quarry; Warren Brothers Quarry), Prospect Park, Passaic County, New Jersey [./preh311/preh3112g.JPG]


No. PREH3112 - $ 450.00

Prehnite finger cast after Anhydrite

Locality: Prospect Park Quarry (Sowerbutt Quarry; Vandermade Quarry; Warren Brothers Quarry), Prospect Park, Passaic County, New Jersey

Specimen Size: 8.3 x 4.2 x 3.1 cm (small cabinet)


An attractive display specimen hosting several finger-shaped casts after Anhydrite with great luster, color and gemminess. The fine crystallization of the Prehnite is noteworthy as well. The piece is sawed on the bottom, but still displays nicely from several angles. A few minor scuffs keep it from being 100% perfect, but still good quality compared to many from the discovery.



To order this specimen click here




(click on the pictures to enlarge)

Prehnite finger cast after Anhydrite with Calcite from Prospect Park Quarry (Sowerbutt Quarry; Vandermade Quarry; Warren Brothers Quarry), Prospect Park, Passaic County, New Jersey [./preh311/preh3113a.JPG] Prehnite finger cast after Anhydrite with Calcite from Prospect Park Quarry (Sowerbutt Quarry; Vandermade Quarry; Warren Brothers Quarry), Prospect Park, Passaic County, New Jersey [./preh311/preh3113b.JPG] Prehnite finger cast after Anhydrite with Calcite from Prospect Park Quarry (Sowerbutt Quarry; Vandermade Quarry; Warren Brothers Quarry), Prospect Park, Passaic County, New Jersey [./preh311/preh3113c.JPG] Prehnite finger cast after Anhydrite with Calcite from Prospect Park Quarry (Sowerbutt Quarry; Vandermade Quarry; Warren Brothers Quarry), Prospect Park, Passaic County, New Jersey [./preh311/preh3113d.JPG] Prehnite finger cast after Anhydrite with Calcite from Prospect Park Quarry (Sowerbutt Quarry; Vandermade Quarry; Warren Brothers Quarry), Prospect Park, Passaic County, New Jersey [./preh311/preh3113e.JPG] Prehnite finger cast after Anhydrite with Calcite from Prospect Park Quarry (Sowerbutt Quarry; Vandermade Quarry; Warren Brothers Quarry), Prospect Park, Passaic County, New Jersey [./preh311/preh3113f.JPG]


No. PREH3113 - $ 375.00

Prehnite finger cast after Anhydrite with Calcite

Locality: Prospect Park Quarry (Sowerbutt Quarry; Vandermade Quarry; Warren Brothers Quarry), Prospect Park, Passaic County, New Jersey

Specimen Size: 5.6 x 5.5 x 2.7 cm (small cabinet)
Largest finger: 2.8 cm


A beautiful, undamaged, isolated finger-shaped cast of Prehnite after Anhydrite with lovely soft luster, gemminess and light green color sits among several spherical aggregates of Prehnite which are associated with a “ridge” of off-white color scalenohedra of Calcite sitting along the edge of the specimen. The piece is in great shape for the material, and truly looks better in person as it was somewhat difficult to photograph.

To order this specimen click here




(click on the pictures to enlarge)

Prehnite finger cast after Anhydrite with Calcite from Prospect Park Quarry (Sowerbutt Quarry; Vandermade Quarry; Warren Brothers Quarry), Prospect Park, Passaic County, New Jersey [./preh311/preh3114a.JPG] Prehnite finger cast after Anhydrite with Calcite from Prospect Park Quarry (Sowerbutt Quarry; Vandermade Quarry; Warren Brothers Quarry), Prospect Park, Passaic County, New Jersey [./preh311/preh3114b.JPG] Prehnite finger cast after Anhydrite with Calcite from Prospect Park Quarry (Sowerbutt Quarry; Vandermade Quarry; Warren Brothers Quarry), Prospect Park, Passaic County, New Jersey [./preh311/preh3114c.JPG] Prehnite finger cast after Anhydrite with Calcite from Prospect Park Quarry (Sowerbutt Quarry; Vandermade Quarry; Warren Brothers Quarry), Prospect Park, Passaic County, New Jersey [./preh311/preh3114d.JPG] Prehnite finger cast after Anhydrite with Calcite from Prospect Park Quarry (Sowerbutt Quarry; Vandermade Quarry; Warren Brothers Quarry), Prospect Park, Passaic County, New Jersey [./preh311/preh3114e.JPG] Prehnite finger cast after Anhydrite with Calcite from Prospect Park Quarry (Sowerbutt Quarry; Vandermade Quarry; Warren Brothers Quarry), Prospect Park, Passaic County, New Jersey [./preh311/preh3114f.JPG] Prehnite finger cast after Anhydrite with Calcite from Prospect Park Quarry (Sowerbutt Quarry; Vandermade Quarry; Warren Brothers Quarry), Prospect Park, Passaic County, New Jersey [./preh311/preh3114g.JPG] Prehnite finger cast after Anhydrite with Calcite from Prospect Park Quarry (Sowerbutt Quarry; Vandermade Quarry; Warren Brothers Quarry), Prospect Park, Passaic County, New Jersey [./preh311/preh3114h.JPG] Prehnite finger cast after Anhydrite with Calcite from Prospect Park Quarry (Sowerbutt Quarry; Vandermade Quarry; Warren Brothers Quarry), Prospect Park, Passaic County, New Jersey [./preh311/preh3114i.JPG]


No. PREH3114 - $ 350.00

Prehnite finger cast after Anhydrite with Calcite

Locality: Prospect Park Quarry (Sowerbutt Quarry; Vandermade Quarry; Warren Brothers Quarry), Prospect Park, Passaic County, New Jersey

Specimen Size: 7.0 x 4.8 x 3.0 cm (small cabinet)
Largest finger: 3.2 cm


A beautiful, undamaged, light green color, isolated finger-shaped cast of Prehnite after Anhydrite with lovely soft luster and gemminess sits among several spherical aggregates of Prehnite which are associated with off-white color scalenohedra of Calcite on matrix. The piece is in great shape for the material, and truly looks better in person as it was somewhat difficult to photograph; private_notes



To order this specimen click here




(click on the pictures to enlarge)

Prehnite finger cast after Anhydrite with Calcite from Prospect Park Quarry (Sowerbutt Quarry; Vandermade Quarry; Warren Brothers Quarry), Prospect Park, Passaic County, New Jersey [./preh311/preh3115a.JPG] Prehnite finger cast after Anhydrite with Calcite from Prospect Park Quarry (Sowerbutt Quarry; Vandermade Quarry; Warren Brothers Quarry), Prospect Park, Passaic County, New Jersey [./preh311/preh3115b.JPG] Prehnite finger cast after Anhydrite with Calcite from Prospect Park Quarry (Sowerbutt Quarry; Vandermade Quarry; Warren Brothers Quarry), Prospect Park, Passaic County, New Jersey [./preh311/preh3115c.JPG] Prehnite finger cast after Anhydrite with Calcite from Prospect Park Quarry (Sowerbutt Quarry; Vandermade Quarry; Warren Brothers Quarry), Prospect Park, Passaic County, New Jersey [./preh311/preh3115d.JPG]


No. PREH3115 - $ 250.00

Prehnite finger cast after Anhydrite with Calcite

Locality: Prospect Park Quarry (Sowerbutt Quarry; Vandermade Quarry; Warren Brothers Quarry), Prospect Park, Passaic County, New Jersey

Specimen Size: 4.8 x 3.5 x 2.1 cm (miniature)


A beautiful miniature sized specimen with a predominant finger-shaped cast with wonderful luster, color and gemminess. The piece is associated with a pair of gemmy, white-colored Calcite scalenohedra. Great quality for the material, and a worthwhile specimen from this fantastic discovery.

To order this specimen click here




(click on the pictures to enlarge)

Prehnite casts after Anhydrite with Calcite from Prospect Park Quarry (Sowerbutt Quarry; Vandermade Quarry; Warren Brothers Quarry), Prospect Park, Passaic County, New Jersey [./preh311/preh3116a.JPG] Prehnite casts after Anhydrite with Calcite from Prospect Park Quarry (Sowerbutt Quarry; Vandermade Quarry; Warren Brothers Quarry), Prospect Park, Passaic County, New Jersey [./preh311/preh3116b.JPG] Prehnite casts after Anhydrite with Calcite from Prospect Park Quarry (Sowerbutt Quarry; Vandermade Quarry; Warren Brothers Quarry), Prospect Park, Passaic County, New Jersey [./preh311/preh3116c.JPG] Prehnite casts after Anhydrite with Calcite from Prospect Park Quarry (Sowerbutt Quarry; Vandermade Quarry; Warren Brothers Quarry), Prospect Park, Passaic County, New Jersey [./preh311/preh3116d.JPG] Prehnite casts after Anhydrite with Calcite from Prospect Park Quarry (Sowerbutt Quarry; Vandermade Quarry; Warren Brothers Quarry), Prospect Park, Passaic County, New Jersey [./preh311/preh3116e.JPG] Prehnite casts after Anhydrite with Calcite from Prospect Park Quarry (Sowerbutt Quarry; Vandermade Quarry; Warren Brothers Quarry), Prospect Park, Passaic County, New Jersey [./preh311/preh3116f.JPG] Prehnite casts after Anhydrite with Calcite from Prospect Park Quarry (Sowerbutt Quarry; Vandermade Quarry; Warren Brothers Quarry), Prospect Park, Passaic County, New Jersey [./preh311/preh3116g.JPG] Prehnite casts after Anhydrite with Calcite from Prospect Park Quarry (Sowerbutt Quarry; Vandermade Quarry; Warren Brothers Quarry), Prospect Park, Passaic County, New Jersey [./preh311/preh3116h.JPG] Prehnite casts after Anhydrite with Calcite from Prospect Park Quarry (Sowerbutt Quarry; Vandermade Quarry; Warren Brothers Quarry), Prospect Park, Passaic County, New Jersey [./preh311/preh3116i.JPG] Prehnite casts after Anhydrite with Calcite from Prospect Park Quarry (Sowerbutt Quarry; Vandermade Quarry; Warren Brothers Quarry), Prospect Park, Passaic County, New Jersey [./preh311/preh3116j.JPG]


No. PREH3116 - $ 150.00

Prehnite casts after Anhydrite with Calcite

Locality: Prospect Park Quarry (Sowerbutt Quarry; Vandermade Quarry; Warren Brothers Quarry), Prospect Park, Passaic County, New Jersey

Specimen Size: 4.7 x 4.3 x 2.3 cm (miniature)


Wonderfully gemmy, spherical light green Prehnite casts after Anhydrite with several, off-white color, gemmy scalenohedral Calcite crystals. A few of the Calcites are twinned, and for the most part, the piece is great shape from the standpoint of quality.

To order this specimen click here




(click on the pictures to enlarge)

Prehnite finger casts after Anhydrite from Prospect Park Quarry (Sowerbutt Quarry; Vandermade Quarry; Warren Brothers Quarry), Prospect Park, Passaic County, New Jersey [./preh311/preh3117a.JPG] Prehnite finger casts after Anhydrite from Prospect Park Quarry (Sowerbutt Quarry; Vandermade Quarry; Warren Brothers Quarry), Prospect Park, Passaic County, New Jersey [./preh311/preh3117b.JPG] Prehnite finger casts after Anhydrite from Prospect Park Quarry (Sowerbutt Quarry; Vandermade Quarry; Warren Brothers Quarry), Prospect Park, Passaic County, New Jersey [./preh311/preh3117c.JPG] Prehnite finger casts after Anhydrite from Prospect Park Quarry (Sowerbutt Quarry; Vandermade Quarry; Warren Brothers Quarry), Prospect Park, Passaic County, New Jersey [./preh311/preh3117d.JPG] Prehnite finger casts after Anhydrite from Prospect Park Quarry (Sowerbutt Quarry; Vandermade Quarry; Warren Brothers Quarry), Prospect Park, Passaic County, New Jersey [./preh311/preh3117e.JPG] Prehnite finger casts after Anhydrite from Prospect Park Quarry (Sowerbutt Quarry; Vandermade Quarry; Warren Brothers Quarry), Prospect Park, Passaic County, New Jersey [./preh311/preh3117f.JPG] Prehnite finger casts after Anhydrite from Prospect Park Quarry (Sowerbutt Quarry; Vandermade Quarry; Warren Brothers Quarry), Prospect Park, Passaic County, New Jersey [./preh311/preh3117g.JPG]


No. PREH3117 - $ 200.00

Prehnite finger casts after Anhydrite

Locality: Prospect Park Quarry (Sowerbutt Quarry; Vandermade Quarry; Warren Brothers Quarry), Prospect Park, Passaic County, New Jersey

Specimen Size: 3.8 x 3.8 x 2.8 cm (miniature)


An eye-catching small miniature sized specimen with a few thick, lustrous, gemmy, pleasing green color casts of Prehnite after Anhydrite. The piece has good balance, and displays well from a few angles. The reverse side of the piece shows a small cavity where the Anhydrite once grew, proving that the “fingers” are indeed hollow inside.

To order this specimen click here




(click on the pictures to enlarge)

Prehnite finger casts after Anhydrite from Prospect Park Quarry (Sowerbutt Quarry; Vandermade Quarry; Warren Brothers Quarry), Prospect Park, Passaic County, New Jersey [./preh311/preh3118a.JPG] Prehnite finger casts after Anhydrite from Prospect Park Quarry (Sowerbutt Quarry; Vandermade Quarry; Warren Brothers Quarry), Prospect Park, Passaic County, New Jersey [./preh311/preh3118b.JPG] Prehnite finger casts after Anhydrite from Prospect Park Quarry (Sowerbutt Quarry; Vandermade Quarry; Warren Brothers Quarry), Prospect Park, Passaic County, New Jersey [./preh311/preh3118c.JPG] Prehnite finger casts after Anhydrite from Prospect Park Quarry (Sowerbutt Quarry; Vandermade Quarry; Warren Brothers Quarry), Prospect Park, Passaic County, New Jersey [./preh311/preh3118d.JPG] Prehnite finger casts after Anhydrite from Prospect Park Quarry (Sowerbutt Quarry; Vandermade Quarry; Warren Brothers Quarry), Prospect Park, Passaic County, New Jersey [./preh311/preh3118e.JPG]


No. PREH3118 - $ 100.00

Prehnite finger casts after Anhydrite

Locality: Prospect Park Quarry (Sowerbutt Quarry; Vandermade Quarry; Warren Brothers Quarry), Prospect Park, Passaic County, New Jersey

Specimen Size: 4.8 x 3.7 x 2.5 cm (miniature)


Great luster, good color, and pleasing gemminess make this miniature sized specimen and worthwhile piece for the price. The main finger is undamaged, but the side of the specimen is contacted where it was removed from the pocket. You can see one of the “fingers” on the side of the piece shows the thin prismatic form that once was an Anhydrite crystal, which dissolved away after the Prehnite was introduced to the pocket.

To order this specimen click here




(click on the pictures to enlarge)

Prehnite casts after Anhydrite with “Phacolite” twinned Chabazite and Pumpellyite from Prospect Park Quarry (Sowerbutt Quarry; Vandermade Quarry; Warren Brothers Quarry), Prospect Park, Passaic County, New Jersey [./preh311/preh3119a.JPG] Prehnite casts after Anhydrite with “Phacolite” twinned Chabazite and Pumpellyite from Prospect Park Quarry (Sowerbutt Quarry; Vandermade Quarry; Warren Brothers Quarry), Prospect Park, Passaic County, New Jersey [./preh311/preh3119b.JPG] Prehnite casts after Anhydrite with “Phacolite” twinned Chabazite and Pumpellyite from Prospect Park Quarry (Sowerbutt Quarry; Vandermade Quarry; Warren Brothers Quarry), Prospect Park, Passaic County, New Jersey [./preh311/preh3119c.JPG] Prehnite casts after Anhydrite with “Phacolite” twinned Chabazite and Pumpellyite from Prospect Park Quarry (Sowerbutt Quarry; Vandermade Quarry; Warren Brothers Quarry), Prospect Park, Passaic County, New Jersey [./preh311/preh3119d.JPG] Prehnite casts after Anhydrite with “Phacolite” twinned Chabazite and Pumpellyite from Prospect Park Quarry (Sowerbutt Quarry; Vandermade Quarry; Warren Brothers Quarry), Prospect Park, Passaic County, New Jersey [./preh311/preh3119e.JPG] Prehnite casts after Anhydrite with “Phacolite” twinned Chabazite and Pumpellyite from Prospect Park Quarry (Sowerbutt Quarry; Vandermade Quarry; Warren Brothers Quarry), Prospect Park, Passaic County, New Jersey [./preh311/preh3119f.JPG] Prehnite casts after Anhydrite with “Phacolite” twinned Chabazite and Pumpellyite from Prospect Park Quarry (Sowerbutt Quarry; Vandermade Quarry; Warren Brothers Quarry), Prospect Park, Passaic County, New Jersey [./preh311/preh3119g.JPG] Prehnite casts after Anhydrite with “Phacolite” twinned Chabazite and Pumpellyite from Prospect Park Quarry (Sowerbutt Quarry; Vandermade Quarry; Warren Brothers Quarry), Prospect Park, Passaic County, New Jersey [./preh311/preh3119h.JPG]


No. PREH3119 - $ 145.00

Prehnite casts after Anhydrite with “Phacolite” twinned Chabazite and Pumpellyite

Locality: Prospect Park Quarry (Sowerbutt Quarry; Vandermade Quarry; Warren Brothers Quarry), Prospect Park, Passaic County, New Jersey

Specimen Size: 4.2 x 3.7 x 2.7 cm (miniature)


Several lustrous, gemmy, light green color spherical aggregates of Prehnite which have replaced preexisting Anhydrite. There is a slight coating on the Prehnite, but does not necessarily detract from the overall quality of the piece. The underside of the piece features white, micro “Phacolite” twins of Chabazite along with greenish-brown aggregates of Pumpellyite. I have photographed these micro crystals under the microscope to better illustrate their quality.

To order this specimen click here




(click on the pictures to enlarge)

Prehnite finger cast after Anhydrite from Prospect Park Quarry (Sowerbutt Quarry; Vandermade Quarry; Warren Brothers Quarry), Prospect Park, Passaic County, New Jersey [./preh311/preh31110a.JPG] Prehnite finger cast after Anhydrite from Prospect Park Quarry (Sowerbutt Quarry; Vandermade Quarry; Warren Brothers Quarry), Prospect Park, Passaic County, New Jersey [./preh311/preh31110b.JPG] Prehnite finger cast after Anhydrite from Prospect Park Quarry (Sowerbutt Quarry; Vandermade Quarry; Warren Brothers Quarry), Prospect Park, Passaic County, New Jersey [./preh311/preh31110c.JPG] Prehnite finger cast after Anhydrite from Prospect Park Quarry (Sowerbutt Quarry; Vandermade Quarry; Warren Brothers Quarry), Prospect Park, Passaic County, New Jersey [./preh311/preh31110d.JPG]


No. PREH31110 - $ 200.00

Prehnite finger cast after Anhydrite

Locality: Prospect Park Quarry (Sowerbutt Quarry; Vandermade Quarry; Warren Brothers Quarry), Prospect Park, Passaic County, New Jersey

Specimen Size: 4.6 x 4.0 x 2.6 cm (miniature)


A predominant, undamaged, thick, lustrous, gemmy, light green color finger-shaped cast of Prehnite after Anhydrite smartly sits in the center of this miniature sized specimen. The piece has a two-tone effect as the reverse side of the specimen has a deposition of a brownish clay mineral. On the back and bottom of the specimen, one can see the distinct, square, prismatic casts that were created once the preexisting Anhydrite dissolved away.

To order this specimen click here




(click on the pictures to enlarge)

Prehnite finger cast after Anhydrite from Prospect Park Quarry (Sowerbutt Quarry; Vandermade Quarry; Warren Brothers Quarry), Prospect Park, Passaic County, New Jersey [./preh311/preh31111a.JPG] Prehnite finger cast after Anhydrite from Prospect Park Quarry (Sowerbutt Quarry; Vandermade Quarry; Warren Brothers Quarry), Prospect Park, Passaic County, New Jersey [./preh311/preh31111b.JPG] Prehnite finger cast after Anhydrite from Prospect Park Quarry (Sowerbutt Quarry; Vandermade Quarry; Warren Brothers Quarry), Prospect Park, Passaic County, New Jersey [./preh311/preh31111c.JPG] Prehnite finger cast after Anhydrite from Prospect Park Quarry (Sowerbutt Quarry; Vandermade Quarry; Warren Brothers Quarry), Prospect Park, Passaic County, New Jersey [./preh311/preh31111d.JPG]


No. PREH31111 - $ 195.00

Prehnite finger cast after Anhydrite

Locality: Prospect Park Quarry (Sowerbutt Quarry; Vandermade Quarry; Warren Brothers Quarry), Prospect Park, Passaic County, New Jersey

Specimen Size: 4.3 x 4.1 x 2.0 cm (miniature)


An aesthetic, eye-catching miniature sized display specimen of Prehnite after Anhydrite from this famous discovery in 2010. This specimen displays on its own without the aid of a base or clay, and is complete all the way around. The piece is slightly rough in areas as it may have been growing against the pocket wall. The piece has a two-tone effect that is caused by a deposition of a brownish mineral on the back of the piece. The front of the specimen shows a darker green color than most from the find, along with good luster and decent gemminess.

To order this specimen click here




(click on the pictures to enlarge)

Prehnite finger casts after Anhydrite from Prospect Park Quarry (Sowerbutt Quarry; Vandermade Quarry; Warren Brothers Quarry), Prospect Park, Passaic County, New Jersey [./preh311/preh31112a.JPG] Prehnite finger casts after Anhydrite from Prospect Park Quarry (Sowerbutt Quarry; Vandermade Quarry; Warren Brothers Quarry), Prospect Park, Passaic County, New Jersey [./preh311/preh31112b.JPG] Prehnite finger casts after Anhydrite from Prospect Park Quarry (Sowerbutt Quarry; Vandermade Quarry; Warren Brothers Quarry), Prospect Park, Passaic County, New Jersey [./preh311/preh31112c.JPG] Prehnite finger casts after Anhydrite from Prospect Park Quarry (Sowerbutt Quarry; Vandermade Quarry; Warren Brothers Quarry), Prospect Park, Passaic County, New Jersey [./preh311/preh31112d.JPG] Prehnite finger casts after Anhydrite from Prospect Park Quarry (Sowerbutt Quarry; Vandermade Quarry; Warren Brothers Quarry), Prospect Park, Passaic County, New Jersey [./preh311/preh31112e.JPG]


No. PREH31112 - $ 225.00

Prehnite finger casts after Anhydrite

Locality: Prospect Park Quarry (Sowerbutt Quarry; Vandermade Quarry; Warren Brothers Quarry), Prospect Park, Passaic County, New Jersey

Specimen Size: 4.7 x 4.6 x 3.3 cm (miniature)


A good full-sized miniature specimen with excellent luster, gemminess and color. The reverse and underside of the specimen shows the hollow, striated cavities where the once preexisting Anhydrite once grew. The piece displays well without the aid of a base or clay. A few slight contacts keep it from being 100% perfect, but still a worthwhile specimen of this now famous material.

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(click on the pictures to enlarge)

Prehnite finger cast after Anhydrite from Prospect Park Quarry (Sowerbutt Quarry; Vandermade Quarry; Warren Brothers Quarry), Prospect Park, Passaic County, New Jersey [./preh311/preh31113a.JPG] Prehnite finger cast after Anhydrite from Prospect Park Quarry (Sowerbutt Quarry; Vandermade Quarry; Warren Brothers Quarry), Prospect Park, Passaic County, New Jersey [./preh311/preh31113b.JPG] Prehnite finger cast after Anhydrite from Prospect Park Quarry (Sowerbutt Quarry; Vandermade Quarry; Warren Brothers Quarry), Prospect Park, Passaic County, New Jersey [./preh311/preh31113c.JPG] Prehnite finger cast after Anhydrite from Prospect Park Quarry (Sowerbutt Quarry; Vandermade Quarry; Warren Brothers Quarry), Prospect Park, Passaic County, New Jersey [./preh311/preh31113d.JPG] Prehnite finger cast after Anhydrite from Prospect Park Quarry (Sowerbutt Quarry; Vandermade Quarry; Warren Brothers Quarry), Prospect Park, Passaic County, New Jersey [./preh311/preh31113e.JPG]


No. PREH31113 - $ 150.00

Prehnite finger cast after Anhydrite

Locality: Prospect Park Quarry (Sowerbutt Quarry; Vandermade Quarry; Warren Brothers Quarry), Prospect Park, Passaic County, New Jersey

Specimen Size: 3.7 x 1.6 x 1.4 cm (miniature)


A classic, single finger-shaped cast of Prehnite after Anhydrite with good luster on the display side, and a slight coating of a secondary clay mineral on the back. The underside of the piece shows the square cross-section of the once preexisting Anhydrite crystal that was the base for the cast.

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(click on the pictures to enlarge)

Prehnite finger cast after Anhydrite from Prospect Park Quarry (Sowerbutt Quarry; Vandermade Quarry; Warren Brothers Quarry), Prospect Park, Passaic County, New Jersey [./preh311/preh31114a.JPG] Prehnite finger cast after Anhydrite from Prospect Park Quarry (Sowerbutt Quarry; Vandermade Quarry; Warren Brothers Quarry), Prospect Park, Passaic County, New Jersey [./preh311/preh31114b.JPG] Prehnite finger cast after Anhydrite from Prospect Park Quarry (Sowerbutt Quarry; Vandermade Quarry; Warren Brothers Quarry), Prospect Park, Passaic County, New Jersey [./preh311/preh31114c.JPG] Prehnite finger cast after Anhydrite from Prospect Park Quarry (Sowerbutt Quarry; Vandermade Quarry; Warren Brothers Quarry), Prospect Park, Passaic County, New Jersey [./preh311/preh31114d.JPG] Prehnite finger cast after Anhydrite from Prospect Park Quarry (Sowerbutt Quarry; Vandermade Quarry; Warren Brothers Quarry), Prospect Park, Passaic County, New Jersey [./preh311/preh31114e.JPG]


No. PREH31114 - $ 175.00

Prehnite finger cast after Anhydrite

Locality: Prospect Park Quarry (Sowerbutt Quarry; Vandermade Quarry; Warren Brothers Quarry), Prospect Park, Passaic County, New Jersey

Specimen Size: 5.0 x 2.2 x 1.6 cm (miniature)


A classic, thick, single finger-shaped cast of Prehnite after Anhydrite with good gemminess and luster on the display side, and a slight coating of a secondary clay mineral on the back. The side of the piece has a second spherical aggregate that was contact upon extraction from the pocket. The underside of the piece shows the square cross-section of the once preexisting Anhydrite crystal that was the base for the cast.

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(click on the pictures to enlarge)

Prehnite finger cast after Anhydrite with Calcite from Prospect Park Quarry (Sowerbutt Quarry; Vandermade Quarry; Warren Brothers Quarry), Prospect Park, Passaic County, New Jersey [./preh311/preh31115a.JPG] Prehnite finger cast after Anhydrite with Calcite from Prospect Park Quarry (Sowerbutt Quarry; Vandermade Quarry; Warren Brothers Quarry), Prospect Park, Passaic County, New Jersey [./preh311/preh31115b.JPG] Prehnite finger cast after Anhydrite with Calcite from Prospect Park Quarry (Sowerbutt Quarry; Vandermade Quarry; Warren Brothers Quarry), Prospect Park, Passaic County, New Jersey [./preh311/preh31115c.JPG] Prehnite finger cast after Anhydrite with Calcite from Prospect Park Quarry (Sowerbutt Quarry; Vandermade Quarry; Warren Brothers Quarry), Prospect Park, Passaic County, New Jersey [./preh311/preh31115d.JPG] Prehnite finger cast after Anhydrite with Calcite from Prospect Park Quarry (Sowerbutt Quarry; Vandermade Quarry; Warren Brothers Quarry), Prospect Park, Passaic County, New Jersey [./preh311/preh31115e.JPG] Prehnite finger cast after Anhydrite with Calcite from Prospect Park Quarry (Sowerbutt Quarry; Vandermade Quarry; Warren Brothers Quarry), Prospect Park, Passaic County, New Jersey [./preh311/preh31115f.JPG] Prehnite finger cast after Anhydrite with Calcite from Prospect Park Quarry (Sowerbutt Quarry; Vandermade Quarry; Warren Brothers Quarry), Prospect Park, Passaic County, New Jersey [./preh311/preh31115g.JPG]


No. PREH31115 - $ 200.00

Prehnite finger cast after Anhydrite with Calcite

Locality: Prospect Park Quarry (Sowerbutt Quarry; Vandermade Quarry; Warren Brothers Quarry), Prospect Park, Passaic County, New Jersey

Specimen Size: 4.6 x 4.5 x 4.1 cm (miniature)


One of the more unique specimens in the lot showing a rather large, hollow cavity on the base of the piece where a good amount of preexisting Anhydrite once grew. The focal point of the piece is a single, isolated, undamaged, good green color finger of Prehnite which is flaring out of the top of the specimen. The luster is good for the material compared to most. Lastly, the piece is accented by small, whitish color scalenohedra of Calcite along the edge of the specimen.

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(click on the pictures to enlarge)

Prehnite finger cast after Anhydrite from Prospect Park Quarry (Sowerbutt Quarry; Vandermade Quarry; Warren Brothers Quarry), Prospect Park, Passaic County, New Jersey [./preh311/preh31116a.JPG] Prehnite finger cast after Anhydrite from Prospect Park Quarry (Sowerbutt Quarry; Vandermade Quarry; Warren Brothers Quarry), Prospect Park, Passaic County, New Jersey [./preh311/preh31116b.JPG] Prehnite finger cast after Anhydrite from Prospect Park Quarry (Sowerbutt Quarry; Vandermade Quarry; Warren Brothers Quarry), Prospect Park, Passaic County, New Jersey [./preh311/preh31116c.JPG] Prehnite finger cast after Anhydrite from Prospect Park Quarry (Sowerbutt Quarry; Vandermade Quarry; Warren Brothers Quarry), Prospect Park, Passaic County, New Jersey [./preh311/preh31116d.JPG] Prehnite finger cast after Anhydrite from Prospect Park Quarry (Sowerbutt Quarry; Vandermade Quarry; Warren Brothers Quarry), Prospect Park, Passaic County, New Jersey [./preh311/preh31116e.JPG]


No. PREH31116 - $ 85.00

Prehnite finger cast after Anhydrite

Locality: Prospect Park Quarry (Sowerbutt Quarry; Vandermade Quarry; Warren Brothers Quarry), Prospect Park, Passaic County, New Jersey

Specimen Size: 3.1 x 1.5 x 1.4 cm (thumbnail)


A classic, single finger-shaped cast of Prehnite after Anhydrite with good luster on the display side, and a slight coating of a secondary clay mineral on the back. The underside of the piece shows the square cross-section of the once preexisting Anhydrite crystal that was the base for the cast.

To order this specimen click here




(click on the pictures to enlarge)

Prehnite finger cast after Anhydrite from Prospect Park Quarry (Sowerbutt Quarry; Vandermade Quarry; Warren Brothers Quarry), Prospect Park, Passaic County, New Jersey [./preh311/preh31117a.JPG] Prehnite finger cast after Anhydrite from Prospect Park Quarry (Sowerbutt Quarry; Vandermade Quarry; Warren Brothers Quarry), Prospect Park, Passaic County, New Jersey [./preh311/preh31117b.JPG] Prehnite finger cast after Anhydrite from Prospect Park Quarry (Sowerbutt Quarry; Vandermade Quarry; Warren Brothers Quarry), Prospect Park, Passaic County, New Jersey [./preh311/preh31117c.JPG] Prehnite finger cast after Anhydrite from Prospect Park Quarry (Sowerbutt Quarry; Vandermade Quarry; Warren Brothers Quarry), Prospect Park, Passaic County, New Jersey [./preh311/preh31117d.JPG] Prehnite finger cast after Anhydrite from Prospect Park Quarry (Sowerbutt Quarry; Vandermade Quarry; Warren Brothers Quarry), Prospect Park, Passaic County, New Jersey [./preh311/preh31117e.JPG] Prehnite finger cast after Anhydrite from Prospect Park Quarry (Sowerbutt Quarry; Vandermade Quarry; Warren Brothers Quarry), Prospect Park, Passaic County, New Jersey [./preh311/preh31117f.JPG]


No. PREH31117 - $ 120.00

Prehnite finger cast after Anhydrite

Locality: Prospect Park Quarry (Sowerbutt Quarry; Vandermade Quarry; Warren Brothers Quarry), Prospect Park, Passaic County, New Jersey

Specimen Size: 3.6 x 1.9 x 1.7 cm (miniature)


A classic, single finger-shaped cast of Prehnite after Anhydrite with good luster on the display side, and a slight coating of a secondary clay mineral on the back. The underside of the piece shows the square cross-section of the once preexisting Anhydrite crystal that was the base for the cast.

To order this specimen click here




(click on the pictures to enlarge)

Prehnite finger casts after Anhydrite from Prospect Park Quarry (Sowerbutt Quarry; Vandermade Quarry; Warren Brothers Quarry), Prospect Park, Passaic County, New Jersey [./preh311/preh31118a.JPG] Prehnite finger casts after Anhydrite from Prospect Park Quarry (Sowerbutt Quarry; Vandermade Quarry; Warren Brothers Quarry), Prospect Park, Passaic County, New Jersey [./preh311/preh31118b.JPG] Prehnite finger casts after Anhydrite from Prospect Park Quarry (Sowerbutt Quarry; Vandermade Quarry; Warren Brothers Quarry), Prospect Park, Passaic County, New Jersey [./preh311/preh31118c.JPG] Prehnite finger casts after Anhydrite from Prospect Park Quarry (Sowerbutt Quarry; Vandermade Quarry; Warren Brothers Quarry), Prospect Park, Passaic County, New Jersey [./preh311/preh31118d.JPG] Prehnite finger casts after Anhydrite from Prospect Park Quarry (Sowerbutt Quarry; Vandermade Quarry; Warren Brothers Quarry), Prospect Park, Passaic County, New Jersey [./preh311/preh31118e.JPG]


No. PREH31118 - $ 140.00

Prehnite finger casts after Anhydrite

Locality: Prospect Park Quarry (Sowerbutt Quarry; Vandermade Quarry; Warren Brothers Quarry), Prospect Park, Passaic County, New Jersey

Specimen Size: 4.1 x 2.2 x 1.7 cm (miniature)


A pair of classic, finger-shaped casts of Prehnite after Anhydrite with good luster on the display side, and a slight coating of a secondary clay mineral on the back. The underside of the piece shows the square cross-section of the once preexisting Anhydrite crystals that were the base for the cast.

To order this specimen click here




(click on the pictures to enlarge)

Prehnite “BOOT”-shaped cast after Anhydrite with Calcite from Prospect Park Quarry (Sowerbutt Quarry; Vandermade Quarry; Warren Brothers Quarry), Prospect Park, Passaic County, New Jersey [./preh311/preh31119a.JPG] Prehnite “BOOT”-shaped cast after Anhydrite with Calcite from Prospect Park Quarry (Sowerbutt Quarry; Vandermade Quarry; Warren Brothers Quarry), Prospect Park, Passaic County, New Jersey [./preh311/preh31119b.JPG] Prehnite “BOOT”-shaped cast after Anhydrite with Calcite from Prospect Park Quarry (Sowerbutt Quarry; Vandermade Quarry; Warren Brothers Quarry), Prospect Park, Passaic County, New Jersey [./preh311/preh31119c.JPG] Prehnite “BOOT”-shaped cast after Anhydrite with Calcite from Prospect Park Quarry (Sowerbutt Quarry; Vandermade Quarry; Warren Brothers Quarry), Prospect Park, Passaic County, New Jersey [./preh311/preh31119d.JPG] Prehnite “BOOT”-shaped cast after Anhydrite with Calcite from Prospect Park Quarry (Sowerbutt Quarry; Vandermade Quarry; Warren Brothers Quarry), Prospect Park, Passaic County, New Jersey [./preh311/preh31119e.JPG] Prehnite “BOOT”-shaped cast after Anhydrite with Calcite from Prospect Park Quarry (Sowerbutt Quarry; Vandermade Quarry; Warren Brothers Quarry), Prospect Park, Passaic County, New Jersey [./preh311/preh31119f.JPG] Prehnite “BOOT”-shaped cast after Anhydrite with Calcite from Prospect Park Quarry (Sowerbutt Quarry; Vandermade Quarry; Warren Brothers Quarry), Prospect Park, Passaic County, New Jersey [./preh311/preh31119g.JPG]


No. PREH31119 - $ 250.00

Prehnite “BOOT”-shaped cast after Anhydrite with Calcite

Locality: Prospect Park Quarry (Sowerbutt Quarry; Vandermade Quarry; Warren Brothers Quarry), Prospect Park, Passaic County, New Jersey

Specimen Size: 2.8 x 2.7 x 1.6 cm (thumbnail)


A unique and eye-catching large thumbnail sized display specimen. The piece has an uncanny resemblance to a BOOT (!), and certainly is unlike any other specimen in the lot. To top it off, the piece is accented with several off-white color scalenohedra of Calcite. Good luster on the display side, and a slight coating of a secondary clay mineral on the back. The underside of the piece shows the square cross-section of the once preexisting Anhydrite crystal that was the base for the cast

To order this specimen click here




(click on the pictures to enlarge)

Prehnite finger cast after Anhydrite from Prospect Park Quarry (Sowerbutt Quarry; Vandermade Quarry; Warren Brothers Quarry), Prospect Park, Passaic County, New Jersey [./preh311/preh31120a.JPG] Prehnite finger cast after Anhydrite from Prospect Park Quarry (Sowerbutt Quarry; Vandermade Quarry; Warren Brothers Quarry), Prospect Park, Passaic County, New Jersey [./preh311/preh31120b.JPG] Prehnite finger cast after Anhydrite from Prospect Park Quarry (Sowerbutt Quarry; Vandermade Quarry; Warren Brothers Quarry), Prospect Park, Passaic County, New Jersey [./preh311/preh31120c.JPG] Prehnite finger cast after Anhydrite from Prospect Park Quarry (Sowerbutt Quarry; Vandermade Quarry; Warren Brothers Quarry), Prospect Park, Passaic County, New Jersey [./preh311/preh31120d.JPG] Prehnite finger cast after Anhydrite from Prospect Park Quarry (Sowerbutt Quarry; Vandermade Quarry; Warren Brothers Quarry), Prospect Park, Passaic County, New Jersey [./preh311/preh31120e.JPG]


No. PREH31120 - $ 80.00

Prehnite finger cast after Anhydrite

Locality: Prospect Park Quarry (Sowerbutt Quarry; Vandermade Quarry; Warren Brothers Quarry), Prospect Park, Passaic County, New Jersey

Specimen Size: 3.0 x 1.4 x 1.2 cm (thumbnail)


A classic, single finger-shaped cast of Prehnite after Anhydrite with good luster on the display side, and a slight coating of a secondary clay mineral on the back. The underside of the piece shows the square cross-section of the once preexisting Anhydrite crystal that was the base for the cast.

To order this specimen click here




(click on the pictures to enlarge)

Prehnite finger cast after Anhydrite from Prospect Park Quarry (Sowerbutt Quarry; Vandermade Quarry; Warren Brothers Quarry), Prospect Park, Passaic County, New Jersey [./preh311/preh31121a.JPG] Prehnite finger cast after Anhydrite from Prospect Park Quarry (Sowerbutt Quarry; Vandermade Quarry; Warren Brothers Quarry), Prospect Park, Passaic County, New Jersey [./preh311/preh31121b.JPG] Prehnite finger cast after Anhydrite from Prospect Park Quarry (Sowerbutt Quarry; Vandermade Quarry; Warren Brothers Quarry), Prospect Park, Passaic County, New Jersey [./preh311/preh31121c.JPG] Prehnite finger cast after Anhydrite from Prospect Park Quarry (Sowerbutt Quarry; Vandermade Quarry; Warren Brothers Quarry), Prospect Park, Passaic County, New Jersey [./preh311/preh31121d.JPG] Prehnite finger cast after Anhydrite from Prospect Park Quarry (Sowerbutt Quarry; Vandermade Quarry; Warren Brothers Quarry), Prospect Park, Passaic County, New Jersey [./preh311/preh31121e.JPG]


No. PREH31121 - $ 75.00

Prehnite finger cast after Anhydrite

Locality: Prospect Park Quarry (Sowerbutt Quarry; Vandermade Quarry; Warren Brothers Quarry), Prospect Park, Passaic County, New Jersey

Specimen Size: 2.8 x 1.3 x 1.2 cm (thumbnail)


A classic, single finger-shaped cast of Prehnite after Anhydrite with good luster on the display side, and a slight coating of a secondary clay mineral on the back. The underside of the piece shows the square cross-section of the once preexisting Anhydrite crystal that was the base for the cast.

To order this specimen click here




(click on the pictures to enlarge)

Prehnite finger casts after Anhydrite from Prospect Park Quarry (Sowerbutt Quarry; Vandermade Quarry; Warren Brothers Quarry), Prospect Park, Passaic County, New Jersey [./preh311/preh31122a.JPG] Prehnite finger casts after Anhydrite from Prospect Park Quarry (Sowerbutt Quarry; Vandermade Quarry; Warren Brothers Quarry), Prospect Park, Passaic County, New Jersey [./preh311/preh31122b.JPG] Prehnite finger casts after Anhydrite from Prospect Park Quarry (Sowerbutt Quarry; Vandermade Quarry; Warren Brothers Quarry), Prospect Park, Passaic County, New Jersey [./preh311/preh31122c.JPG] Prehnite finger casts after Anhydrite from Prospect Park Quarry (Sowerbutt Quarry; Vandermade Quarry; Warren Brothers Quarry), Prospect Park, Passaic County, New Jersey [./preh311/preh31122d.JPG] Prehnite finger casts after Anhydrite from Prospect Park Quarry (Sowerbutt Quarry; Vandermade Quarry; Warren Brothers Quarry), Prospect Park, Passaic County, New Jersey [./preh311/preh31122e.JPG]


No. PREH31122 - $ 145.00

Prehnite finger casts after Anhydrite

Locality: Prospect Park Quarry (Sowerbutt Quarry; Vandermade Quarry; Warren Brothers Quarry), Prospect Park, Passaic County, New Jersey

Specimen Size: 3.2 x 2.5 x 1.5 cm (miniature)


A pair of classic, finger-shaped casts of Prehnite after Anhydrite with good luster on the display side, and a slight coating of a secondary clay mineral on the back. The gemminess and color make it a worthwhile “toenail” sized specimen of this well contemporary classic material. The underside of the piece shows the square cross-section of the once preexisting Anhydrite crystals that were the base for the cast.

To order this specimen click here




(click on the pictures to enlarge)

Prehnite finger cast after Anhydrite from Prospect Park Quarry (Sowerbutt Quarry; Vandermade Quarry; Warren Brothers Quarry), Prospect Park, Passaic County, New Jersey [./preh311/preh31123a.JPG] Prehnite finger cast after Anhydrite from Prospect Park Quarry (Sowerbutt Quarry; Vandermade Quarry; Warren Brothers Quarry), Prospect Park, Passaic County, New Jersey [./preh311/preh31123b.JPG] Prehnite finger cast after Anhydrite from Prospect Park Quarry (Sowerbutt Quarry; Vandermade Quarry; Warren Brothers Quarry), Prospect Park, Passaic County, New Jersey [./preh311/preh31123c.JPG] Prehnite finger cast after Anhydrite from Prospect Park Quarry (Sowerbutt Quarry; Vandermade Quarry; Warren Brothers Quarry), Prospect Park, Passaic County, New Jersey [./preh311/preh31123d.JPG]


No. PREH31123 - $ 165.00

Prehnite finger cast after Anhydrite

Locality: Prospect Park Quarry (Sowerbutt Quarry; Vandermade Quarry; Warren Brothers Quarry), Prospect Park, Passaic County, New Jersey

Specimen Size: 3.7 x 2.2 x 1.5 cm (miniature)


A beautiful, single finger-shaped cast of Prehnite after Anhydrite with bright green color, wonderful gemminess, and good luster on the display side. There is a very slight coating of a secondary clay mineral on the back. The side and base of the piece shows the square cross-section of the once preexisting Anhydrite crystal that was the base for the cast.

To order this specimen click here




(click on the pictures to enlarge)

Prehnite finger casts after Anhydrite from Prospect Park Quarry (Sowerbutt Quarry; Vandermade Quarry; Warren Brothers Quarry), Prospect Park, Passaic County, New Jersey [./preh311/preh31124a.JPG] Prehnite finger casts after Anhydrite from Prospect Park Quarry (Sowerbutt Quarry; Vandermade Quarry; Warren Brothers Quarry), Prospect Park, Passaic County, New Jersey [./preh311/preh31124b.JPG] Prehnite finger casts after Anhydrite from Prospect Park Quarry (Sowerbutt Quarry; Vandermade Quarry; Warren Brothers Quarry), Prospect Park, Passaic County, New Jersey [./preh311/preh31124c.JPG] Prehnite finger casts after Anhydrite from Prospect Park Quarry (Sowerbutt Quarry; Vandermade Quarry; Warren Brothers Quarry), Prospect Park, Passaic County, New Jersey [./preh311/preh31124d.JPG]


No. PREH31124 - $ 90.00

Prehnite finger casts after Anhydrite

Locality: Prospect Park Quarry (Sowerbutt Quarry; Vandermade Quarry; Warren Brothers Quarry), Prospect Park, Passaic County, New Jersey

Specimen Size: 4.7 x 3.8 x 2.6 cm (miniature)


An aesthetic miniature display specimen of this contemporary classic material featuring a predominant, single finger-shaped cast of Prehnite replacing Anhydrite that is flaring out of the center of the specimen. The main finger is accompanied by a few small secondary fingers. Unfortunately, the majority of the specimen has a coating of a secondary clay mineral, so the luster is not top quality. The color is still good, and the piece displays very well without the aid of a base or clay. A good bargain for the size and overall aesthetics of the piece.

To order this specimen click here




(click on the pictures to enlarge)

Prehnite finger cast after Anhydrite from Prospect Park Quarry (Sowerbutt Quarry; Vandermade Quarry; Warren Brothers Quarry), Prospect Park, Passaic County, New Jersey [./preh311/preh31125a.JPG] Prehnite finger cast after Anhydrite from Prospect Park Quarry (Sowerbutt Quarry; Vandermade Quarry; Warren Brothers Quarry), Prospect Park, Passaic County, New Jersey [./preh311/preh31125b.JPG] Prehnite finger cast after Anhydrite from Prospect Park Quarry (Sowerbutt Quarry; Vandermade Quarry; Warren Brothers Quarry), Prospect Park, Passaic County, New Jersey [./preh311/preh31125c.JPG] Prehnite finger cast after Anhydrite from Prospect Park Quarry (Sowerbutt Quarry; Vandermade Quarry; Warren Brothers Quarry), Prospect Park, Passaic County, New Jersey [./preh311/preh31125d.JPG] Prehnite finger cast after Anhydrite from Prospect Park Quarry (Sowerbutt Quarry; Vandermade Quarry; Warren Brothers Quarry), Prospect Park, Passaic County, New Jersey [./preh311/preh31125e.JPG]


No. PREH31125 - $ 120.00

Prehnite finger cast after Anhydrite

Locality: Prospect Park Quarry (Sowerbutt Quarry; Vandermade Quarry; Warren Brothers Quarry), Prospect Park, Passaic County, New Jersey

Specimen Size: 3.5 x 2.3 x 2.1 cm (miniature)


A toenail / small miniature sized specimen of Prehnite after Anhydrite comprising finger-shaped casts and “balls” with decent luster, gemminess and color. The piece does have a light coating of a secondary clay mineral, but does display well from several angles. A nice representative piece from this famous discovery.

To order this specimen click here




(click on the pictures to enlarge)

Prehnite finger casts after Anhydrite from Prospect Park Quarry (Sowerbutt Quarry; Vandermade Quarry; Warren Brothers Quarry), Prospect Park, Passaic County, New Jersey [./preh311/preh31126a.JPG] Prehnite finger casts after Anhydrite from Prospect Park Quarry (Sowerbutt Quarry; Vandermade Quarry; Warren Brothers Quarry), Prospect Park, Passaic County, New Jersey [./preh311/preh31126b.JPG] Prehnite finger casts after Anhydrite from Prospect Park Quarry (Sowerbutt Quarry; Vandermade Quarry; Warren Brothers Quarry), Prospect Park, Passaic County, New Jersey [./preh311/preh31126c.JPG] Prehnite finger casts after Anhydrite from Prospect Park Quarry (Sowerbutt Quarry; Vandermade Quarry; Warren Brothers Quarry), Prospect Park, Passaic County, New Jersey [./preh311/preh31126d.JPG] Prehnite finger casts after Anhydrite from Prospect Park Quarry (Sowerbutt Quarry; Vandermade Quarry; Warren Brothers Quarry), Prospect Park, Passaic County, New Jersey [./preh311/preh31126e.JPG]


No. PREH31126 - $ 300.00

Prehnite finger casts after Anhydrite

Locality: Prospect Park Quarry (Sowerbutt Quarry; Vandermade Quarry; Warren Brothers Quarry), Prospect Park, Passaic County, New Jersey

Specimen Size: 5.5 x 3.5 x 2.8 cm (small cabinet)


Several slender finger-shaped casts of Prehnite after Anhydrite in parallel growth make this an attractive large miniature / small cabinet display specimen. The piece has a soft velvety luster, with a medium to light green color. The side and base of the piece is exposed to show the hollow cavity where the slender, striated Anhydrite crystals once grew. Certainly different than the majority of the pieces in the lot.



To order this specimen click here




(click on the pictures to enlarge)

Prehnite finger cast after Anhydrite from Prospect Park Quarry (Sowerbutt Quarry; Vandermade Quarry; Warren Brothers Quarry), Prospect Park, Passaic County, New Jersey [./preh311/preh31127a.JPG] Prehnite finger cast after Anhydrite from Prospect Park Quarry (Sowerbutt Quarry; Vandermade Quarry; Warren Brothers Quarry), Prospect Park, Passaic County, New Jersey [./preh311/preh31127b.JPG] Prehnite finger cast after Anhydrite from Prospect Park Quarry (Sowerbutt Quarry; Vandermade Quarry; Warren Brothers Quarry), Prospect Park, Passaic County, New Jersey [./preh311/preh31127c.JPG] Prehnite finger cast after Anhydrite from Prospect Park Quarry (Sowerbutt Quarry; Vandermade Quarry; Warren Brothers Quarry), Prospect Park, Passaic County, New Jersey [./preh311/preh31127d.JPG]


No. PREH31127 - $ 195.00

Prehnite finger cast after Anhydrite

Locality: Prospect Park Quarry (Sowerbutt Quarry; Vandermade Quarry; Warren Brothers Quarry), Prospect Park, Passaic County, New Jersey

Specimen Size: 4.4 x 3.8 x 2.2 cm (miniature)


A good sized, lustrous, nice green color, gemmy, isolated Prehnite finger after Anhydrite is shooting out of the center of this miniature sized specimen. The finger is complete all the way around, and has a very slight coating of a secondary clay mineral. An attractive display specimen with the classic form that made the pieces from this discovery famous.

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(click on the pictures to enlarge)

Prehnite finger casts after Anhydrite from Prospect Park Quarry (Sowerbutt Quarry; Vandermade Quarry; Warren Brothers Quarry), Prospect Park, Passaic County, New Jersey [./preh311/preh31128a.JPG] Prehnite finger casts after Anhydrite from Prospect Park Quarry (Sowerbutt Quarry; Vandermade Quarry; Warren Brothers Quarry), Prospect Park, Passaic County, New Jersey [./preh311/preh31128b.JPG] Prehnite finger casts after Anhydrite from Prospect Park Quarry (Sowerbutt Quarry; Vandermade Quarry; Warren Brothers Quarry), Prospect Park, Passaic County, New Jersey [./preh311/preh31128c.JPG] Prehnite finger casts after Anhydrite from Prospect Park Quarry (Sowerbutt Quarry; Vandermade Quarry; Warren Brothers Quarry), Prospect Park, Passaic County, New Jersey [./preh311/preh31128d.JPG] Prehnite finger casts after Anhydrite from Prospect Park Quarry (Sowerbutt Quarry; Vandermade Quarry; Warren Brothers Quarry), Prospect Park, Passaic County, New Jersey [./preh311/preh31128e.JPG]


No. PREH31128 - $ 85.00

Prehnite finger casts after Anhydrite

Locality: Prospect Park Quarry (Sowerbutt Quarry; Vandermade Quarry; Warren Brothers Quarry), Prospect Park, Passaic County, New Jersey

Specimen Size: 3.8 x 3.7 x 2.2 cm (miniature)


An intersecting pair of finger-shaped Prehnite casts after Anhydrite sit in a very thin layer of soft yellow-green Prehnite matrix. The piece has a coating of a secondary clay mineral that cannot be removed, hence the reduced price, but is in good shape all the way around. The underside of the specimen shows the square cross-sections where the once preexisting Anhydrite once grew.

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(click on the pictures to enlarge)

Prehnite finger casts after Anhydrite from Prospect Park Quarry (Sowerbutt Quarry; Vandermade Quarry; Warren Brothers Quarry), Prospect Park, Passaic County, New Jersey [./preh311/preh31129a.JPG] Prehnite finger casts after Anhydrite from Prospect Park Quarry (Sowerbutt Quarry; Vandermade Quarry; Warren Brothers Quarry), Prospect Park, Passaic County, New Jersey [./preh311/preh31129b.JPG] Prehnite finger casts after Anhydrite from Prospect Park Quarry (Sowerbutt Quarry; Vandermade Quarry; Warren Brothers Quarry), Prospect Park, Passaic County, New Jersey [./preh311/preh31129c.JPG] Prehnite finger casts after Anhydrite from Prospect Park Quarry (Sowerbutt Quarry; Vandermade Quarry; Warren Brothers Quarry), Prospect Park, Passaic County, New Jersey [./preh311/preh31129d.JPG] Prehnite finger casts after Anhydrite from Prospect Park Quarry (Sowerbutt Quarry; Vandermade Quarry; Warren Brothers Quarry), Prospect Park, Passaic County, New Jersey [./preh311/preh31129e.JPG]


No. PREH31129 - $ 120.00

Prehnite finger casts after Anhydrite

Locality: Prospect Park Quarry (Sowerbutt Quarry; Vandermade Quarry; Warren Brothers Quarry), Prospect Park, Passaic County, New Jersey

Specimen Size: 6.1 x 4.3 x 4.2 cm (small cabinet)
Largest finger: 4.0 cm


A representative specimen of Prehnite “fingers” after Anhydrite with a darker green color, and a coating of a secondary clay mineral. Overall, the piece is actually in good condition, with a predominant finger flaring out of the center of the piece. The color in the photos is accentuated by the lighting we used to photograph the piece, but it is a bit more muted in person.

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(click on the pictures to enlarge)

Prehnite finger cast after Anhydrite with Calcite from Prospect Park Quarry (Sowerbutt Quarry; Vandermade Quarry; Warren Brothers Quarry), Prospect Park, Passaic County, New Jersey [./preh311/preh31130a.JPG] Prehnite finger cast after Anhydrite with Calcite from Prospect Park Quarry (Sowerbutt Quarry; Vandermade Quarry; Warren Brothers Quarry), Prospect Park, Passaic County, New Jersey [./preh311/preh31130b.JPG] Prehnite finger cast after Anhydrite with Calcite from Prospect Park Quarry (Sowerbutt Quarry; Vandermade Quarry; Warren Brothers Quarry), Prospect Park, Passaic County, New Jersey [./preh311/preh31130c.JPG]


No. PREH31130 - $ 140.00

Prehnite finger cast after Anhydrite with Calcite

Locality: Prospect Park Quarry (Sowerbutt Quarry; Vandermade Quarry; Warren Brothers Quarry), Prospect Park, Passaic County, New Jersey

Specimen Size: 4.3 x 4.0 x 1.5 cm (miniature)


A beautiful miniature sized specimen with a central finger-shaped cast with good luster, color and gemminess. The piece is associated with a few off-white colored Calcite scalenohedra. Good quality for the material, and a worthwhile specimen from this fantastic discovery.

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