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Gypsum & Atacamite

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ESM625553

Gypsum & Atacamite

Description Tabs

Description
Locality: 
Lily Mine, Humay, Pisco, Ica Department, Peru
Class: 
Combination
Size Range: 
Miniature (4.5-7 cm)
Size: 
5.5 × 3.5 × 2.7 cm
Description

Bright green atacamite crystals in and on transparent gypsum

Mineral Data
What's on the rock

Gypsum

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

Atacamite

Formula: 
Cu2(OH)3Cl
Strunz: 
3.DA.10a
Crystal System: 
Orthorhombic
Hardness: 
3.0 - 3.5
Type Locality: 
Atacama Region, Chile