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Chalcophanite

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ESM655489

Chalcophanite

Description Tabs

Description
Locality: 
Gold Hill Mine, Gold Hill, Tooele County, Utah, United States of America
Class: 
Crystals on Matrix
Size Range: 
Miniature (4.5-7 cm)
Size: 
4 × 6 × 3.5 cm
Description

Metallic grey botryoidal chalcophanite aggregates on matrix

Mineral Data
What's on the rock

Chalcophanite

Formula: 
(Zn,Fe,Mn)Mn3O7·3H2O
Strunz: 
4.FL.20
Crystal System: 
Trigonal
Hardness: 
2.5
Type Locality: 
Passaic pit (Marshall Mine; Passaic Mine), Sterling Hill, Ogdensburg, Franklin Mining District, Sussex Co., New Jersey, USA