Calcite (ex Brian Kosnar Collection)

Osceola Mine, Cunningham Gulch, Silverton, San Juan County, Colorado
Small Cabinet, 5.3 x 4.1 x 2.3 cm
Start Time: 09/13/2012 6:45:00 pm (CDT)
End Time: 09/20/2012 6:45:00 pm (CDT)
Auction Closed

Item Description

A seldom seen Calcite from the Osceola mine near Silverton. This specimen is filled with sharp, Calcite scalenohedra up to cm, and have a dark chocolate brown coating of an unknown manganese oxide. The crystals have a matte luster and are clearly coated as the underside of the piece shows white/colorless Calcite crystals. A very attractive Calcite specimen to add to a Colorado collection. The largest crystal measures 1.3 cm.

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