Mineral: Calcite
Locality: Twin Buttes Mine, Twin Buttes, Pima mining district, Sierrita Mountains, Pima County, Arizona, USA
Dimensions: 90 x 69 x 42

Description: A fine cluster of lustrous, creamy-white, translucent scalenahedrons of Calcite to 17 mm long. There are a few damaged crystal tips on one part of the specimen, but are of little consequence as specimens of this quality are never seen from this Arizona mine. Collected by Stan Keith in 1972 during early exploration activities.

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