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Copper & Prehnite

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ESM548977

Copper & Prehnite

Description Tabs

Description
Locality: 
Adventure Mine, Greenland, Ontonagon County, Michigan, United States of America
Class: 
Combination
Size Range: 
Miniature (4.5-7 cm)
Size: 
4.1 × 6.3 × 4 cm
Description

Lustrous pale green prehnite crystals hosting copper crystals

Mineral Data
What's on the rock

Copper

Formula: 
Cu
Strunz: 
1.AA.05
Crystal System: 
Isometric
Hardness: 
2.5 - 3.0

Prehnite

Formula: 
Ca2Al2Si3O10(OH)2
Strunz: 
9.DP.20
Hardness: 
6.0 - 6.5
Streak: 
White
Type Locality: 
Karoo dolerites, Cradock, Chris Hani District, Eastern Cape Province, South Africa