Calcite

A seldom seen Calcite from the Osceola Mine along the Animas River near Silverton. This specimen features sharp, well-formed rhombohedra of Calcite up to 1.2 cm that have a medium chocolate-brown coating of an unknown manganese oxide. Additionally, the crystals are sitting on excellent quality, lustrous, GEM / gemmy Quartz prisms on matrix. From the collection of T. M. Phetteplace (specimen #1161) originally purchased from the famous Columbine Mineral Shop in Ouray, Colorado.

Ex. T. M. Phetteplace collection

Specimen# CO712B160