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Bournonite from the
Machacamarca mine, Bolivia

Enjoy !!



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Bournonite (twinned crystals) from Viboras Mine, Machacamarca, Machacamarca District (Colavi District), Cornelio Saavedra Province, Potosí Department, Bolivia [./BournBol1009/BournBol10091a.jpg] Bournonite (twinned crystals) from Viboras Mine, Machacamarca, Machacamarca District (Colavi District), Cornelio Saavedra Province, Potosí Department, Bolivia [./BournBol1009/BournBol10091c.jpg] Bournonite (twinned crystals) from Viboras Mine, Machacamarca, Machacamarca District (Colavi District), Cornelio Saavedra Province, Potosí Department, Bolivia [./BournBol1009/BournBol10091b.jpg] Bournonite (twinned crystals) from Viboras Mine, Machacamarca, Machacamarca District (Colavi District), Cornelio Saavedra Province, Potosí Department, Bolivia [./BournBol1009/BournBol10091d.jpg]


No. BOURNBOL10091 - $ 550.00 (=~ £ 374.38)

Bournonite (twinned crystals)

Locality: Viboras Mine, Machacamarca, Machacamarca District (Colavi District), Cornelio Saavedra Province, Potosí Department, Bolivia

Specimen Size: 4.8 x 4.6 x 2.5 cm (miniature)


One of the best quality Bournonites in the lot that I purchased. The photos do not do this piece justice as the luster is very good compared to most. It is a multi-crystal group comprising a few rather thick blades with stepped faces and the classic "gun metal" appearance. A few trivial nicks around the edges keep this from being a top-notch miniature, but the quality is there, and the fact that it is not a single crystal but rather a group of crystals, is rare from this mine.

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Bournonite (highly lustrous twinned crystal) from Viboras Mine, Machacamarca, Machacamarca District (Colavi District), Cornelio Saavedra Province, Potosí Department, Bolivia [./BournBol1009/BournBol10092a.jpg] Bournonite (highly lustrous twinned crystal) from Viboras Mine, Machacamarca, Machacamarca District (Colavi District), Cornelio Saavedra Province, Potosí Department, Bolivia [./BournBol1009/BournBol10092c.jpg] Bournonite (highly lustrous twinned crystal) from Viboras Mine, Machacamarca, Machacamarca District (Colavi District), Cornelio Saavedra Province, Potosí Department, Bolivia [./BournBol1009/BournBol10092b.jpg] Bournonite (highly lustrous twinned crystal) from Viboras Mine, Machacamarca, Machacamarca District (Colavi District), Cornelio Saavedra Province, Potosí Department, Bolivia [./BournBol1009/BournBol10092d.jpg]


No. BournBol10092 - $ 500.00 (=~ £ 340.35)

Bournonite (highly lustrous twinned crystal)

Locality: Viboras Mine, Machacamarca, Machacamarca District (Colavi District), Cornelio Saavedra Province, Potosí Department, Bolivia

Specimen Size: 3.3 x 2.4 x 1.7 cm (miniature)


A very fine toenail sized display specimen with superb luster, sharpness and overall appeal. The display side of the specimen is virtually undamaged and shows wonderful beveled faces with beautiful metallic silver reflectivity. The crystallization is wonderful, and for the quality, there are few this good from Machacamarca.

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Bournonite (twinned crystals) from Viboras Mine, Machacamarca, Machacamarca District (Colavi District), Cornelio Saavedra Province, Potosí Department, Bolivia [./BournBol1009/BournBol10093e.JPG] Bournonite (twinned crystals) from Viboras Mine, Machacamarca, Machacamarca District (Colavi District), Cornelio Saavedra Province, Potosí Department, Bolivia [./BournBol1009/BournBol10093d.jpg] Bournonite (twinned crystals) from Viboras Mine, Machacamarca, Machacamarca District (Colavi District), Cornelio Saavedra Province, Potosí Department, Bolivia [./BournBol1009/BournBol10093c.jpg]


No. BOURNBOL10093 - $ 525.00 (=~ £ 357.37)

Bournonite (twinned crystals)

Locality: Viboras Mine, Machacamarca, Machacamarca District (Colavi District), Cornelio Saavedra Province, Potosí Department, Bolivia

Specimen Size: 4.5 x 3.4 x 1.8 cm (miniature)


A great miniature size specimen from Machacamarca featuring wonderfully lustrous faces that have very sharp, distinct, "squared" corners and beautiful aesthetics. The crystals form a "heart"-shaped twin, and were it not for a small contact on the back corner, the display side of the piece would be pristine. For the size and the great balance of the crystals, this is certainly a good buy considering that so many specimens from this mine have serious damage problems.

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Bournonite (twinned crystals) from Viboras Mine, Machacamarca, Machacamarca District (Colavi District), Cornelio Saavedra Province, Potosí Department, Bolivia [./BournBol1009/BournBol10094a.jpg] Bournonite (twinned crystals) from Viboras Mine, Machacamarca, Machacamarca District (Colavi District), Cornelio Saavedra Province, Potosí Department, Bolivia [./BournBol1009/BournBol10094b.jpg] Bournonite (twinned crystals) from Viboras Mine, Machacamarca, Machacamarca District (Colavi District), Cornelio Saavedra Province, Potosí Department, Bolivia [./BournBol1009/BournBol10094c.jpg]


No. BournBol10094 - $ 600.00 (=~ £ 408.42)

Bournonite (twinned crystals)

Locality: Viboras Mine, Machacamarca, Machacamarca District (Colavi District), Cornelio Saavedra Province, Potosí Department, Bolivia

Specimen Size: 4.3 x 3.6 x 1.6 cm (miniature)


A complete all the way around miniature size specimen with beautifully lustrous and smooth twinned crystal faces that are accented by a pair of secondary crystals which are poking out of the middle of the main crystal. Were it not for a contact on the back of the piece, it would be a floater and even with the point of attachment, it is a lovely specimen with great blocky form.

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Bournonite from Viboras Mine, Machacamarca, Machacamarca District (Colavi District), Cornelio Saavedra Province, Potosí Department, Bolivia [./BournBol1009/BournBol10095a.jpg] Bournonite from Viboras Mine, Machacamarca, Machacamarca District (Colavi District), Cornelio Saavedra Province, Potosí Department, Bolivia [./BournBol1009/BournBol10095b.jpg] Bournonite from Viboras Mine, Machacamarca, Machacamarca District (Colavi District), Cornelio Saavedra Province, Potosí Department, Bolivia [./BournBol1009/BournBol10095c.jpg]


No. BournBol10095 - $ 550.00 (=~ £ 374.38)

Bournonite

Locality: Viboras Mine, Machacamarca, Machacamarca District (Colavi District), Cornelio Saavedra Province, Potosí Department, Bolivia

Specimen Size: 5.0 x 3.3 x 3.3 cm (miniature)


A great full size miniature specimen comprising a few sharp, very lustrous, metallic crystals of Bournonite. The piece has a wonderful three-dimensional quality, and main crystal in the center is superb quality with defined striated faces. Groups of crystals like this are few and far between from Machacamarca, and this piece is one of the best of its size that I have had to offer.

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Bournonite from Viboras Mine, Machacamarca, Machacamarca District (Colavi District), Cornelio Saavedra Province, Potosí Department, Bolivia [./BournBol1009/BournBol10096a.JPG] Bournonite from Viboras Mine, Machacamarca, Machacamarca District (Colavi District), Cornelio Saavedra Province, Potosí Department, Bolivia [./BournBol1009/BournBol10096b.JPG] Bournonite from Viboras Mine, Machacamarca, Machacamarca District (Colavi District), Cornelio Saavedra Province, Potosí Department, Bolivia [./BournBol1009/BournBol10096c.JPG] Bournonite from Viboras Mine, Machacamarca, Machacamarca District (Colavi District), Cornelio Saavedra Province, Potosí Department, Bolivia [./BournBol1009/BournBol10096d.JPG]


No. BOURNBOL10096 - $ 375.00 (=~ £ 255.26)

Bournonite

Locality: Viboras Mine, Machacamarca, Machacamarca District (Colavi District), Cornelio Saavedra Province, Potosí Department, Bolivia

Specimen Size: 4.2 x 4.2 x 0.7 cm (miniature)


An excellent single bladed crystal of Bournonite showing good luster with beautiful blocky and striated faces. The piece has a professional repair which does not detract from the overall character of the specimen. The "gun metal" appearance combined with the fine solitary form of the piece makes a great loose crystal of Bournonite from any locality.

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Bournonite from Viboras Mine, Machacamarca, Machacamarca District (Colavi District), Cornelio Saavedra Province, Potosí Department, Bolivia [./BournBol1009/BournBol10097a.JPG] Bournonite from Viboras Mine, Machacamarca, Machacamarca District (Colavi District), Cornelio Saavedra Province, Potosí Department, Bolivia [./BournBol1009/BournBol10097b.JPG] Bournonite from Viboras Mine, Machacamarca, Machacamarca District (Colavi District), Cornelio Saavedra Province, Potosí Department, Bolivia [./BournBol1009/BournBol10097c.JPG]


No. BournBol10097 - $ 275.00 (=~ £ 187.19)

Bournonite

Locality: Viboras Mine, Machacamarca, Machacamarca District (Colavi District), Cornelio Saavedra Province, Potosí Department, Bolivia

Specimen Size: 2.5 x 2.5 x 1.2 cm (thumbnail)


This piece, despite our best efforts to photograph it, is actually a very attractive and worthwhile thumbnail specimen of Bournonite from Machacamarca. It hosts a pair of fine quality, sharp, lustrous, stepped, tabular crystals of a metallic silvery-grey color. There is a point of attachment on the right hand side of the piece, but is virtually damage free the rest of the way around.

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Bournonite from Viboras Mine, Machacamarca, Machacamarca District (Colavi District), Cornelio Saavedra Province, Potosí Department, Bolivia [./BournBol1009/BournBol10098a.JPG] Bournonite from Viboras Mine, Machacamarca, Machacamarca District (Colavi District), Cornelio Saavedra Province, Potosí Department, Bolivia [./BournBol1009/BournBol10098b.JPG]


No. BournBol10098 - $ 100.00 (=~ £ 68.07)

Bournonite

Locality: Viboras Mine, Machacamarca, Machacamarca District (Colavi District), Cornelio Saavedra Province, Potosí Department, Bolivia

Specimen Size: 3.6 x 3.6 x 1.1 cm (miniature)


A good representative Bournonite specimen from this mine hosting a few grey tabular crystals with decent luster and aesthetics. The crystals are associated with micro grey/white Quartz crystals.

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(click on the pictures to enlarge)

Bournonite from Viboras Mine, Machacamarca, Machacamarca District (Colavi District), Cornelio Saavedra Province, Potosí Department, Bolivia [./BournBol1009/BournBol10099a.JPG] Bournonite from Viboras Mine, Machacamarca, Machacamarca District (Colavi District), Cornelio Saavedra Province, Potosí Department, Bolivia [./BournBol1009/BournBol10099c.JPG] Bournonite from Viboras Mine, Machacamarca, Machacamarca District (Colavi District), Cornelio Saavedra Province, Potosí Department, Bolivia [./BournBol1009/BournBol10099b.JPG] Bournonite from Viboras Mine, Machacamarca, Machacamarca District (Colavi District), Cornelio Saavedra Province, Potosí Department, Bolivia [./BournBol1009/BournBol10099e.JPG] Bournonite from Viboras Mine, Machacamarca, Machacamarca District (Colavi District), Cornelio Saavedra Province, Potosí Department, Bolivia [./BournBol1009/BournBol10099d.JPG]


No. BOURNBOL10099 - $ 475.00 (=~ £ 323.33)

Bournonite

Locality: Viboras Mine, Machacamarca, Machacamarca District (Colavi District), Cornelio Saavedra Province, Potosí Department, Bolivia

Specimen Size: 6.0 x 5.2 x 3.2 cm (small cabinet)
Largest crystal: 2.5 cm across


For a small cabinet/large miniature display piece, a group of intergrown crystals such as this one is more than rare from this locality. The piece comprises several well-formed, tabular, metallic silvery "blades" with excellent luster and beveled faces. This cluster of Bournonite crystals from Machacamarca is one of the few of its kind that I have seen. The piece has one very unobtrusive minor repair, which is why I don't have it price a few hundred dollars higher.

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Bournonite ( Bournonite ( Bournonite ( Bournonite (


No. BOURNBOL100910 - $ 250.00 (=~ £ 170.17)

Bournonite ("cogwheel"-esque twins)

Locality: Viboras Mine, Machacamarca, Machacamarca District (Colavi District), Cornelio Saavedra Province, Potosí Department, Bolivia

Specimen Size: 3.3 x 2.5 x 2.1 cm (miniature)


A hard to find "cogwheel"-esque group of sharp, thick, blocky modified twinned crystals of Bournonite with excellent luster and aesthetics. The piece would be classified as a toenail, and displays well from several angles (my favorite being the first picture on the top). The stacked appearance of the crystals, combined with the bright metallic luster makes this one of the more unique smaller Bournonites I have handled from this mine.

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Bournonite from Viboras Mine, Machacamarca, Machacamarca District (Colavi District), Cornelio Saavedra Province, Potosí Department, Bolivia [./BournBol1009/BournBol100911a.JPG] Bournonite from Viboras Mine, Machacamarca, Machacamarca District (Colavi District), Cornelio Saavedra Province, Potosí Department, Bolivia [./BournBol1009/BournBol100911b.JPG] Bournonite from Viboras Mine, Machacamarca, Machacamarca District (Colavi District), Cornelio Saavedra Province, Potosí Department, Bolivia [./BournBol1009/BournBol100911c.JPG] Bournonite from Viboras Mine, Machacamarca, Machacamarca District (Colavi District), Cornelio Saavedra Province, Potosí Department, Bolivia [./BournBol1009/BournBol100911d.JPG]


No. BOURNBOL100911 - $ 225.00 (=~ £ 153.16)

Bournonite

Locality: Viboras Mine, Machacamarca, Machacamarca District (Colavi District), Cornelio Saavedra Province, Potosí Department, Bolivia

Specimen Size: 4.1 x 3.5 x 2.2 cm (miniature)


This group of intergrown crystals shows good luster and a lovely metallic grey appearance. The crystals themselves are good quality for this mine, with stepped and striated faces. There is one repair on the side of the specimen, hence the reduced price, but it is still a nice reference specimen with larger sized crystals for the locality.

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(click on the pictures to enlarge)

Bournonite from Viboras Mine, Machacamarca, Machacamarca District (Colavi District), Cornelio Saavedra Province, Potosí Department, Bolivia [./BournBol1009/BournBol100912a.jpg] Bournonite from Viboras Mine, Machacamarca, Machacamarca District (Colavi District), Cornelio Saavedra Province, Potosí Department, Bolivia [./BournBol1009/BournBol100912b.jpg] Bournonite from Viboras Mine, Machacamarca, Machacamarca District (Colavi District), Cornelio Saavedra Province, Potosí Department, Bolivia [./BournBol1009/BournBol100912c.jpg]


No. BournBol100912 - $ 300.00 (=~ £ 204.21)

Bournonite

Locality: Viboras Mine, Machacamarca, Machacamarca District (Colavi District), Cornelio Saavedra Province, Potosí Department, Bolivia

Specimen Size: 2.6 x 1.6 x 0.5 cm (thumbnail)


A wonderful single crystal of Bournonite showing BRIGHT metallic luster, and superb form. Crystals with high luster from this mine are not common, even in thumbnail sized crystals like this one. The piece is complete all the way around and damage free, save the base where it came off the host rock.

To order this specimen click here




(click on highlighted pictures to enlarge)

Bournonite from Viboras Mine, Machacamarca, Machacamarca District (Colavi District), Cornelio Saavedra Province, Potosí Department, Bolivia [./BournBol1009/BournBol100913a.jpg] Bournonite from Viboras Mine, Machacamarca, Machacamarca District (Colavi District), Cornelio Saavedra Province, Potosí Department, Bolivia [./BournBol1009/BournBol100913b.jpg] Bournonite from Viboras Mine, Machacamarca, Machacamarca District (Colavi District), Cornelio Saavedra Province, Potosí Department, Bolivia [./BournBol1009/BournBol100913c.jpg]


No. BournBol100913 - $ 200.00 (=~ £ 136.14)

Bournonite

Locality: Viboras Mine, Machacamarca, Machacamarca District (Colavi District), Cornelio Saavedra Province, Potosí Department, Bolivia

Specimen Size: 3.0 x 2.9 x 1.2 cm (thumbnail)


A good single Bournonite crystal with classic tabular form, good luster and relatively sharp faces. The alternating smooth and striated faces along with the metallic silver color and minor associated micro grey/white Quartz make this a good little reference specimen from this classic locality.

To order this specimen click here




(click on highlighted pictures to enlarge)

Bournonite from Viboras Mine, Machacamarca, Machacamarca District (Colavi District), Cornelio Saavedra Province, Potosí Department, Bolivia [./BournBol1009/BournBol100914a.jpg] Bournonite from Viboras Mine, Machacamarca, Machacamarca District (Colavi District), Cornelio Saavedra Province, Potosí Department, Bolivia [./BournBol1009/BournBol100914b.jpg] Bournonite from Viboras Mine, Machacamarca, Machacamarca District (Colavi District), Cornelio Saavedra Province, Potosí Department, Bolivia [./BournBol1009/BournBol100914c.jpg]


No. BOURNBOL100914 - SOLD

Bournonite

Locality: Viboras Mine, Machacamarca, Machacamarca District (Colavi District), Cornelio Saavedra Province, Potosí Department, Bolivia

Specimen Size: 4.4 x 3.2 x 2.8 cm (miniature)
Largest crystal: 1.7 cm.


Matrix specimens of Bournonite from this mine are not common, the majority of the crystals end up getting blown off the host rock in the blast due to poor mining techniques. This sharp bladed crystal managed to stay on its matrix of modified Siderite rhombohedra and minor Pyrite. The Bournonite has super luster with small truncated faces along the edge. A pretty miniature specimen and aesthetic to boot.



To order this specimen click here




(click on the pictures to enlarge)

Bournonite from Viboras Mine, Machacamarca, Machacamarca District (Colavi District), Cornelio Saavedra Province, Potosí Department, Bolivia [./BournBol1009/BournBol100915a.jpg] Bournonite from Viboras Mine, Machacamarca, Machacamarca District (Colavi District), Cornelio Saavedra Province, Potosí Department, Bolivia [./BournBol1009/BournBol100915b.jpg] Bournonite from Viboras Mine, Machacamarca, Machacamarca District (Colavi District), Cornelio Saavedra Province, Potosí Department, Bolivia [./BournBol1009/BournBol100915c.jpg]


No. BournBol100915 - $ 500.00 (=~ £ 340.35)

Bournonite

Locality: Viboras Mine, Machacamarca, Machacamarca District (Colavi District), Cornelio Saavedra Province, Potosí Department, Bolivia

Specimen Size: 3.2 x 2.9 x 1.5 cm (miniature)


A choice toenail sized specimen featuring modified crystals of Bournonite with sharp faces, wonderful luster, eye-catching form and the classic silvery metallic appearance that is rare seen from this mine. The piece is in great shape overall, and is not just a single crystal as it has a small accenting crystal running perpendicular against the main crystal.

To order this specimen click here




(click on highlighted pictures to enlarge)

Bournonite on Siderite from Viboras Mine, Machacamarca, Machacamarca District (Colavi District), Cornelio Saavedra Province, Potosí Department, Bolivia [./BournBol1009/BournBol100916a.jpg] Bournonite on Siderite from Viboras Mine, Machacamarca, Machacamarca District (Colavi District), Cornelio Saavedra Province, Potosí Department, Bolivia [./BournBol1009/BournBol100916b.jpg] Bournonite on Siderite from Viboras Mine, Machacamarca, Machacamarca District (Colavi District), Cornelio Saavedra Province, Potosí Department, Bolivia [./BournBol1009/BournBol100916c.jpg]


No. BOURNBOL100916 - SOLD

Bournonite on Siderite

Locality: Viboras Mine, Machacamarca, Machacamarca District (Colavi District), Cornelio Saavedra Province, Potosí Department, Bolivia

Specimen Size: 7.6 x 5.4 x 5.4 cm (small cabinet)
Largest crystal: 2.1 cm. across


Matrix specimens of Bournonite from Machacamarca are hard to find, especially in the small cabinet to cabinet size range. Crude mining methods combined with brittle nature of the Bournonites (and sometimes their host rock) do not allow many crystals to leave the mine on matrix. This piece features a beautiful pair of very well defined, metallic, steel-grey color, sharp, lustrous, tabular crystals of Bournonite on bladed Siderite matrix with a minor dusting of micro Pyrite. For the size, aesthetics and quality of the piece, it is certainly one of the better specimens in this size range that I have had to offer in years.



To order this specimen click here




(click on the pictures to enlarge)

Bournonite (superb twinned crystal) from Viboras Mine, Machacamarca, Machacamarca District (Colavi District), Cornelio Saavedra Province, Potosí Department, Bolivia [./BournBol1009/BournBol100917a.jpg] Bournonite (superb twinned crystal) from Viboras Mine, Machacamarca, Machacamarca District (Colavi District), Cornelio Saavedra Province, Potosí Department, Bolivia [./BournBol1009/BournBol100917b.jpg] Bournonite (superb twinned crystal) from Viboras Mine, Machacamarca, Machacamarca District (Colavi District), Cornelio Saavedra Province, Potosí Department, Bolivia [./BournBol1009/BournBol100917c.jpg] Bournonite (superb twinned crystal) from Viboras Mine, Machacamarca, Machacamarca District (Colavi District), Cornelio Saavedra Province, Potosí Department, Bolivia [./BournBol1009/BournBol100917d.jpg]


No. BOURNBOL100917 - SOLD

Bournonite (superb twinned crystal)

Locality: Viboras Mine, Machacamarca, Machacamarca District (Colavi District), Cornelio Saavedra Province, Potosí Department, Bolivia

Specimen Size: 4.6 x 3.2 x 1.0 cm (miniature)


Hands down, this is one of the finest miniature sized twinned crystals of Bournonite that I have seen from this mine. The amazing form, HIGH luster, and sheer perfection of the crystal make it a real treasure among so many poor quality pieces from this mine. The intense metallic reflections in the crystal faces along with the bright silvery color leave nothing to be desired in a single Bournonite crystal. The photos simply do not do this piece justice. The photos showing the beveled faces along the edge of the crystal are good representations of the quality, but still better in person. If you're in the market for a superb quality, single Bournonite twinned crystal, this is a perfect specimen to add to your collection.

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(click on highlighted picture to enlarge)

Bournonite on Siderite from Viboras Mine, Machacamarca, Machacamarca District (Colavi District), Cornelio Saavedra Province, Potosí Department, Bolivia [./BournBol1009/BournBol100918a.jpg] Bournonite on Siderite from Viboras Mine, Machacamarca, Machacamarca District (Colavi District), Cornelio Saavedra Province, Potosí Department, Bolivia [./BournBol1009/BournBol100918b.jpg]


No. BOURNBOL100918 - $ 225.00 (=~ £ 153.16)

Bournonite on Siderite

Locality: Viboras Mine, Machacamarca, Machacamarca District (Colavi District), Cornelio Saavedra Province, Potosí Department, Bolivia

Specimen Size: 5.7 x 3.8 x 3.7 cm (small cabinet)
Crystal: 1.4 cm.


Matrix specimens of Bournonite from Machacamarca are hard to find, especially in the small cabinet to cabinet size range. Crude mining methods combined with brittle nature of the Bournonites (and sometimes their host rock) do not allow many crystals to leave the mine on matrix. This piece features a nice, sharp, lustrous, "chisel"-shaped crystal Bournonite on bladed Siderite matrix with minor micro Pyrite. The quality of the crystal itself is actually very good, and certainly worthwhile for somebody looking to purchase a nice Bournonite crystal on matrix. Better in person !

To order this specimen click here




(click on the pictures to enlarge)

Bournonite from Viboras Mine, Machacamarca, Machacamarca District (Colavi District), Cornelio Saavedra Province, Potosí Department, Bolivia [./BournBol1009/BournBol100919a.jpg] Bournonite from Viboras Mine, Machacamarca, Machacamarca District (Colavi District), Cornelio Saavedra Province, Potosí Department, Bolivia [./BournBol1009/BournBol100919b.jpg] Bournonite from Viboras Mine, Machacamarca, Machacamarca District (Colavi District), Cornelio Saavedra Province, Potosí Department, Bolivia [./BournBol1009/BournBol100919c.jpg]


No. BournBol100919 - $ 450.00 (=~ £ 306.31)

Bournonite

Locality: Viboras Mine, Machacamarca, Machacamarca District (Colavi District), Cornelio Saavedra Province, Potosí Department, Bolivia

Specimen Size: 3.6 x 2.0 x 1.8 cm (miniature)


The incredible luster, fine quality and beautiful arrangement of the crystals on this specimen make it one of the nicest toenail sized pieces from this mine that I have seen in a long time. The photos simply are not enough to convey the great appeal of this specimen. The piece has a wonderful combination of rather stout, thick blocky crystals along with delicate slender blades. A gorgeous Bournonite specimen for the locality, and one of the most attractive smaller sized pieces I have seen.

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(click on highlighted pictures to enlarge)

Bournonite from Viboras Mine, Machacamarca, Machacamarca District (Colavi District), Cornelio Saavedra Province, Potosí Department, Bolivia [./BournBol1009/BournBol100920a.jpg] Bournonite from Viboras Mine, Machacamarca, Machacamarca District (Colavi District), Cornelio Saavedra Province, Potosí Department, Bolivia [./BournBol1009/BournBol100920c.jpg] Bournonite from Viboras Mine, Machacamarca, Machacamarca District (Colavi District), Cornelio Saavedra Province, Potosí Department, Bolivia [./BournBol1009/BournBol100920b.jpg] Bournonite from Viboras Mine, Machacamarca, Machacamarca District (Colavi District), Cornelio Saavedra Province, Potosí Department, Bolivia [./BournBol1009/BournBol100920d.jpg]


No. BOURNBOL100920 - $ 600.00 (=~ £ 408.42)

Bournonite

Locality: Viboras Mine, Machacamarca, Machacamarca District (Colavi District), Cornelio Saavedra Province, Potosí Department, Bolivia

Specimen Size: 7.7 x 4.0 x 3.2 cm (small cabinet)
Largest Crystal: 3.4 cm.


Compared to their Chinese counterparts, a piece like this would typically be well over $1000, and for the size and quality, it is very fairly priced for what it is. Simply put, this piece is a large intergrown group of beautiful bladed, metallic, sharp, lustrous crystals that is rarely seen from this mine. Due to the nature of the piece, the photos were difficult to take, but there are several pronounced crystals with beautiful form and classic silver color. The piece is crystallized on all sides, and despite a few contacts, it is amazingly good shape for the material. Multi-crystallized specimens of this size are exceedingly difficult to obtain from Machacamarca, and this piece is certainly one-of-a-kind.

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Bournonite from Viboras Mine, Machacamarca, Machacamarca District (Colavi District), Cornelio Saavedra Province, Potosí Department, Bolivia [./BournBol1009/BournBol100921b.jpg] Bournonite from Viboras Mine, Machacamarca, Machacamarca District (Colavi District), Cornelio Saavedra Province, Potosí Department, Bolivia [./BournBol1009/BournBol100921a.jpg]


No. BOURNBOL100921 - $ 300.00 (=~ £ 204.21)

Bournonite

Locality: Viboras Mine, Machacamarca, Machacamarca District (Colavi District), Cornelio Saavedra Province, Potosí Department, Bolivia

Specimen Size: 5.2 x 4.8 x 2.8 cm (small cabinet)
Largest Crystal: 2.1 cm.


A full-sized miniature specimen hosting several thick bladed crystals of metallic grey color Bournonite on a small layer of grey/white micro-crystallized Quartz. There is certainly a fair amount of Bournonite on this specimen, and it is a small miracle that the piece was not completely destroyed in the blast when it was found, let alone the fact that the crystals stayed on matrix!

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Bournonite from Viboras Mine, Machacamarca, Machacamarca District (Colavi District), Cornelio Saavedra Province, Potosí Department, Bolivia [./BournBol1009/BournBol100922a.jpg] Bournonite from Viboras Mine, Machacamarca, Machacamarca District (Colavi District), Cornelio Saavedra Province, Potosí Department, Bolivia [./BournBol1009/BournBol100922b.jpg] Bournonite from Viboras Mine, Machacamarca, Machacamarca District (Colavi District), Cornelio Saavedra Province, Potosí Department, Bolivia [./BournBol1009/BournBol100922d.jpg] Bournonite from Viboras Mine, Machacamarca, Machacamarca District (Colavi District), Cornelio Saavedra Province, Potosí Department, Bolivia [./BournBol1009/BournBol100922c.jpg]


No. BOURNBOL100922 - $ 575.00 (=~ £ 391.40)

Bournonite

Locality: Viboras Mine, Machacamarca, Machacamarca District (Colavi District), Cornelio Saavedra Province, Potosí Department, Bolivia

Specimen Size: 4.2 x 3.4 x 2.8 cm (miniature)
Largest Crystal: 2.7 cm.


A fantastic miniature specimen from this classic locality. It comprises several very attractive, sharp, tabular, "cogwheel"-shaped twinned crystals of metallic grey Bournonite forming what is a very well-balanced and eye-catching display piece. As you can see from the photos, the piece can be shown from several angles, and is virtually damage free on the main display side. Rarely are the Bournonites from this mine found in such attractive crystal groups like this one.

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Bournonite from Viboras Mine, Machacamarca, Machacamarca District (Colavi District), Cornelio Saavedra Province, Potosí Department, Bolivia [./BournBol1009/BournBol100923a.jpg] Bournonite from Viboras Mine, Machacamarca, Machacamarca District (Colavi District), Cornelio Saavedra Province, Potosí Department, Bolivia [./BournBol1009/BournBol100923b.jpg] Bournonite from Viboras Mine, Machacamarca, Machacamarca District (Colavi District), Cornelio Saavedra Province, Potosí Department, Bolivia [./BournBol1009/BournBol100923c.jpg]


No. BOURNBOL100923 - $ 550.00 (=~ £ 374.38)

Bournonite

Locality: Viboras Mine, Machacamarca, Machacamarca District (Colavi District), Cornelio Saavedra Province, Potosí Department, Bolivia

Specimen Size: 3.8 x 3.7 x 2.1 cm (miniature)
Largest Crystal: 3.7 cm.


The amazingly bright luster of this specimen along with the intricate faces of the crystals themselves makes this a very charming toenail sized specimen of Bournonite, not only from Bolivia, but any world locality. The piece is crystallized on both side, and except for the base where it came off the matrix, the piece is in remarkably fine condition all the way around. Sadly, the photos do not communicate the wonderful quality of this piece, and it is truly more striking in person, take my word for it.

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Bournonite from Viboras Mine, Machacamarca, Machacamarca District (Colavi District), Cornelio Saavedra Province, Potosí Department, Bolivia [./BournBol1009/BournBol100924d.jpg] Bournonite from Viboras Mine, Machacamarca, Machacamarca District (Colavi District), Cornelio Saavedra Province, Potosí Department, Bolivia [./BournBol1009/BournBol100924b.jpg] Bournonite from Viboras Mine, Machacamarca, Machacamarca District (Colavi District), Cornelio Saavedra Province, Potosí Department, Bolivia [./BournBol1009/BournBol100924a.jpg] Bournonite from Viboras Mine, Machacamarca, Machacamarca District (Colavi District), Cornelio Saavedra Province, Potosí Department, Bolivia [./BournBol1009/BournBol100924c.jpg]


No. BOURNBOL100924 - $ 600.00 (=~ £ 408.42)

Bournonite

Locality: Viboras Mine, Machacamarca, Machacamarca District (Colavi District), Cornelio Saavedra Province, Potosí Department, Bolivia

Specimen Size: 4.6 x 4.3 x 3.7 cm (miniature)
Largest Crystal: 3.5 cm.


A dramatic and very three-dimensional miniature Bournonite to be sure. The excellent, modified bladed crystals jut out in several directions, giving the piece great visceral impact. Rarely are the specimens from Machacamarca this aesthetic, and unfortunately, the piece was not easy to photograph, and must be seen in person to be fully appreciated. The soft grey striated crystal faces are elegantly mixed among the smooth faces which make this piece all the more attractive.

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Bournonite ( Bournonite (


No. BOURNBOL100925 - $ 400.00 (=~ £ 272.28)

Bournonite ("cogwheel" twin)

Locality: Viboras Mine, Machacamarca, Machacamarca District (Colavi District), Cornelio Saavedra Province, Potosí Department, Bolivia

Specimen Size: 3.4 x 3.0 x 2.8 cm (miniature)


This piece simply is better than the photos indicate. The HIGH luster of the faces combined with the alternating striations made it impossible to photograph and sadly look black in the pictures. The display side of this charming specimen is in great shape overall, and the robust crystals with their sharp surfaces are very hard to find from this mine. The piece is twinned and shows the classic "cogwheel" shape that was made famous by the classic specimens from Cornwall.

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Bournonite (twinned crystals) from Viboras Mine, Machacamarca, Machacamarca District (Colavi District), Cornelio Saavedra Province, Potosí Department, Bolivia [./BournBol1009/BournBol100926a.jpg] Bournonite (twinned crystals) from Viboras Mine, Machacamarca, Machacamarca District (Colavi District), Cornelio Saavedra Province, Potosí Department, Bolivia [./BournBol1009/BournBol100926b.jpg] Bournonite (twinned crystals) from Viboras Mine, Machacamarca, Machacamarca District (Colavi District), Cornelio Saavedra Province, Potosí Department, Bolivia [./BournBol1009/BournBol100926c.jpg]


No. BOURNBOL100926 - $ 350.00 (=~ £ 238.24)

Bournonite (twinned crystals)

Locality: Viboras Mine, Machacamarca, Machacamarca District (Colavi District), Cornelio Saavedra Province, Potosí Department, Bolivia

Specimen Size: 4.8 x 3.7 x 3.2 cm (miniature)
Largest crystal: 3.3 cm.


This piece hosts a well defined twinned crystal group of Bournonite with an obvious reentrant angle at the top. A soft grey luster and rather sharp faces make this piece a well-priced and attention-grabbing miniature that is not seen very often from Bolivia.

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Bournonite ( Bournonite ( Bournonite ( Bournonite (


No. BOURNBOL100927 - $ 40.00 (=~ £ 27.23)

Bournonite ("cogwheel")

Locality: Viboras Mine, Machacamarca, Machacamarca District (Colavi District), Cornelio Saavedra Province, Potosí Department, Bolivia

Specimen Size: 1.5 x 1.2 x 1.1 cm (thumbnail)


A small thumbnail "cogwheel"-shaped specimen with a few distinct, sharp octahedra of Pyrite. The specimen is in decent shape all the way around, but is more of a reference piece than anything else.

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Bournonite from Viboras Mine, Machacamarca, Machacamarca District (Colavi District), Cornelio Saavedra Province, Potosí Department, Bolivia [./BournBol1009/BournBol100928a.jpg] Bournonite from Viboras Mine, Machacamarca, Machacamarca District (Colavi District), Cornelio Saavedra Province, Potosí Department, Bolivia [./BournBol1009/BournBol100928b.jpg]


No. BOURNBOL100928 - $ 50.00 (=~ £ 34.03)

Bournonite

Locality: Viboras Mine, Machacamarca, Machacamarca District (Colavi District), Cornelio Saavedra Province, Potosí Department, Bolivia

Specimen Size: 4.3 x 3.7 x 3.0 cm (miniature)
Crystal: 1.5 cm.


A rarely seen matrix specimen from this mine featuring a solitary, grey blade of Bournonite on micro Pyrite matrix. A fair piece for the size and quality, and a good opportunity for one to purchase an above average reference specimen with good aesthetics.

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(click on highlighted picture to enlarge)

Bournonite ( Bournonite ( Bournonite (


No. BOURNBOL100929 - $ 550.00 (=~ £ 374.38)

Bournonite ("cogwheel" twin)

Locality: Viboras Mine, Machacamarca, Machacamarca District (Colavi District), Cornelio Saavedra Province, Potosí Department, Bolivia

Specimen Size: 7.2 x 4.5 x 3.6 cm (small cabinet)
Crystal: 3.3 cm.


This piece features one of the nicest "cogwheel"-twinned crystal group of Bournonite that I have offered from Bolivia. The crystal group itself has excellent luster, with dozens of discreet, striated "cogs" that form the edge of this wide, tabular, metallic grey crystal which sits atop a matrix of mixed Quartz and Pyrite. To find a fine quality "cogwheel" such as this on matrix from Machacamarca is not common, and the photos honestly do not do this piece justice as it is much more eye-catching in person.

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(click on highlighted picture to enlarge)

Bournonite ( Bournonite ( Bournonite (


No. BOURNBOL100930 - $ 400.00 (=~ £ 272.28)

Bournonite ("cogwheel" twin)

Locality: Viboras Mine, Machacamarca, Machacamarca District (Colavi District), Cornelio Saavedra Province, Potosí Department, Bolivia

Specimen Size: 8.7 x 5.2 x 3.8 cm (small cabinet)
Crystal: 1.8 cm.


To find a fine quality "cogwheel" such as this on matrix from Machacamarca is not common, and the photos honestly do not do this piece justice as it is much more eye-catching in person. This piece features a very attractive "cogwheel"-twinned crystal group of Bournonite with superb luster sitting atop a matrix of micro Pyrite, Quartz and Sphalerite. The "cogwheel" features dozens of discreet, striated "cogs" that form the edge of this thick metallic grey crystal. One side of the crystal is contacted where it more than likely was removed from the host rock, but the piece in general is in very good shape.

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