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Copper & Epidote

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CR129298

Copper & Epidote

Description Tabs

Description
Locality: 
Lake Superior, Keweenaw County, Michigan, United States of America
Size Range: 
Small cabinet (7-10 cm)
Size: 
7.8 × 7 × 3.5 cm
Description

Very rich native copper specimen with green epidote from the famous Alex Franz collection.

Mineral Data
What's on the rock

Copper

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

Epidote

Formula: 
{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Strunz: 
9.BG.05a
Crystal System: 
Monoclinic
Hardness: 
6.0
Streak: 
Colorless
Type Locality: 
Bourg d'Oisans, Isère, Rhône-Alpes, France...