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Johannsenite Sphalerite & Galena

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ESM594130

Johannsenite Sphalerite & Galena

Classic Locality

Description Tabs

Description
Locality: 
Iron Cap Mine, Black Peak, Gila County, Arizona, United States of America
Class: 
Combination
Size Range: 
Thumbnail (1-3cm)
Size: 
1.8 × 2.7 × 2.5 cm
Description

Clusters of greyish-green johannsenite needles with brown sphalerite crystals and minor galena

Mineral Data
What's on the rock

Johannsenite

Formula: 
CaMn2+Si2O6
Group Parent: 
Clinopyroxene Subgroup
Strunz: 
9.DA.15
Hardness: 
6.0
Streak: 
white
Type Locality: 
Franklin Mine, Franklin, Franklin Mining District, Sussex Co., New Jersey, USA

Sphalerite

Formula: 
ZnS
Strunz: 
2.CB.05a
Crystal System: 
Isometric
Hardness: 
3.5 - 4.0

Galena

Formula: 
PbS
Strunz: 
2.CD.10
Crystal System: 
Isometric
Hardness: 
2.5
Colour: 
Lead-grey
Streak: 
Lead-grey