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Powellite Chrysocolla Quartz

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SCH55207

Powellite Chrysocolla Quartz

Description Tabs

Description
Locality: 
Inca de Oro, Chañaral Province/Copiapó Province, Atacama Region, Chile
Size Range: 
Miniature (4.5-7 cm)
Size: 
4.6 × 2.7 × 2.8 cm
Description

Very large powellite crystals forming sprays set on crysocolla covered by quartz.

Mineral Data
What's on the rock

Powellite

Formula: 
Ca(MoO4)
Strunz: 
7.GA.05
Crystal System: 
Tetragonal
Hardness: 
3.5 - 4.0
Type Locality: 
Peacock Mine (South Peacock; Darland; Peacock & South Peacock), Cuprum, Seven Devils District, Adams Co., Idaho, USA

Chrysocolla

Formula: 
Cu2-xAlx(H2-xSi2O5)(OH)4·nH2O (x < 1)
Strunz: 
9.ED.20
Crystal System: 
Monoclinic
Hardness: 
2.5 - 3.5

Quartz

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