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Kröhnkite & Atacamite

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RBM1152602

Description Tabs

Description
Locality: 
Mina Sur, Chuquicamata, Calama, El Loa, Antofagasta Region, Chile
Class: 
Crystal Group/Cluster
Size Range: 
Miniature (4.5-7 cm)
Size: 
4.6 × 4.5 × 1 cm
Description

Intensely colored, very fresh crystals appear along one side of the sample. Small atacamite crystals can also be seen in this sample collected in the late 1980s.

Mineral Data
What's on the rock

Kröhnkite

Formula: 
Na2Cu(SO4)2·2H2O
Strunz: 
7.CC.30
Crystal System: 
Monoclinic
Hardness: 
2.5 - 3.0
Streak: 
White
Type Locality: 
Chuquicamata Mine, Chuquicamata District, Calama, El Loa Province, Antofagasta Region, Chile

Atacamite

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

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