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Sphalerite Chalcopyrite & Dolomite

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CLB567375

Sphalerite Chalcopyrite & Dolomite

ex collection Uwe Nielsen
Classic Locality

Description Tabs

Description
Locality: 
Picher Field, Ottawa County, Oklahoma, United States of America
Class: 
Combination
Size Range: 
Cabinet (10-18 cm)
Size: 
11 × 6 × 4.7 cm
Description

The sphalerite crystals on this specimen appear all black, but are in fact deep dark red and translucent under strong backlight.

Could be they have gem quality.

Mineral Data
What's on the rock

Sphalerite

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

Chalcopyrite

Formula: 
CuFeS2
Strunz: 
2.CB.10a
Crystal System: 
Tetragonal
Hardness: 
3.5 - 4.0

Dolomite

Formula: 
CaMg(CO3)2
Strunz: 
5.AB.10
Crystal System: 
Trigonal - Rhombohedral
Hardness: 
3.5 - 4.0
Streak: 
White

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