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Hoganite Malachite & Gypsum

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GFM786848

Hoganite Malachite & Gypsum

Description Tabs

Description
Locality: 
Copper Queen Mine, Bisbee, Warren District, Cochise County, Arizona, United States of America
Class: 
Crystals on Matrix
Size Range: 
Thumbnail (1-3cm)
Size: 
0.6 × 1.6 × 2.4 cm
Description

The highly rare Copper-Acetate forms blue crystals of up to 2 mm in size, very rich in addition to Malachite and Gypsum on a brown matrix. Old new examined specimens, found around 1970 in a single small pocket

Mineral Data
What's on the rock

Hoganite

Formula: 
Cu(CH3COO)2·H2O
Strunz: 
10.AA.35
Hardness: 
0.0
Streak: 
pale blue
Type Locality: 
Perilya Potosi Mine (Potosi Mine), Broken Hill, Yancowinna Co., New South Wales, Australia

Malachite

Formula: 
Cu2(CO3)(OH)2
Strunz: 
5.BA.10
Crystal System: 
Monoclinic
Hardness: 
3.5 - 4.0

Gypsum

Formula: 
CaSO4·2H2O
Strunz: 
7.CD.40
Hardness: 
2.0
Streak: 
White.