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Pyroxmangite

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SNJ89643

Pyroxmangite

Classic Locality

Description Tabs

Description
Locality: 
Sunnyside Mine Group, Bonita Peak, Gladstone, San Juan County, Colorado, United States of America
Size Range: 
Miniature (4.5-7 cm)
Size: 
4.9 × 5.2 × 4.2 cm
Description

This mineral was formerly thought to be, and is often still called rhodonite. In 1976 it was determined to actually be pyroxmangite. This specimen contains a significant amount of chalcopyrite and sphalerite. Some Sunnyside pyroxmangite is auriferous although I don't see any gold in this piece. This mineral is favored by some lapidarists, as well.

Mineral Data
What's on the rock

Pyroxmangite

Formula: 
MnSiO3
Strunz: 
9.DO.05
Hardness: 
5.5 - 6.0
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