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Bornite Psm Chalcocite On Quartz

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CLB181051

Bornite Psm Chalcocite On Quartz

Classic Locality

Description Tabs

Description
Locality: 
Three Mile Creek, Ritter, Grant County, Oregon, United States of America
Size Range: 
Thumbnail (1-3cm)
Size: 
2.8 × 2.7 × 2 cm
Largest Crystal: 
0.80cm
Description

Large, beautiful, iridescent bornite crystals (pseudomorph after chalcocite ?) up to 0.8 cm (rare!) from Grant County, New Mexico.

Mineral Data
What's on the rock

Bornite

Formula: 
Cu5FeS4
Strunz: 
2.BA.15
Crystal System: 
Tetragonal
Hardness: 
3.0
Type Locality: 
Jáchymov (St Joachimsthal), Jáchymov District (St Joachimsthal), Krušné Hory Mts (Erzgebirge), Karlovy Vary Region, Bohemia (Böhmen; Boehmen), Czech Republic

Chalcocite

Formula: 
Cu2S
Strunz: 
2.BA.05
Crystal System: 
Monoclinic
Hardness: 
2.5 - 3.0

Quartz

Formula: 
SiO2
Strunz: 
4.DA.05
Crystal System: 
Trigonal
Hardness: 
7.0
Streak: 
White

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