Moving mountains for you
Switch currency

Current Live Auctions

Current Live Fixed Price Sales

Native Copper & Native Silver Halfbreed

Views:
Watches:
ESM744710

Native Copper & Native Silver Halfbreed

Description Tabs

Description
Locality: 
Keweenaw, Michigan, United States of America
Class: 
Combination
Size Range: 
Cabinet (10-18 cm)
Size: 
12 × 8.5 × 2 cm
Description

A massive halfbreed specimen with crystallized copper and silver

Mineral Data
What's on the rock

Copper

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

Silver

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