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Kröhnkite & Antofagastaite

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JYJ754129

Kröhnkite & Antofagastaite

Description Tabs

Description
Locality: 
Coronel Manuel Rodríguez Mine, Mejillones Peninsula, Antofagasta Province, Antofagasta Region, Chile
Class: 
Crystals on Matrix
Size Range: 
Small miniature (3-4.5 cm)
Size: 
4.1 × 3.8 × 3.2 cm
Description

Intense sky blue kröhnkite associated with colourless antofagastaite on matrix. Other minerals associated are sideronatrite, glauberite and anhydrite. 

Rare mineral, analysis attached. 

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

Antofagastaite

Formula: 
Na2Ca(SO4)2·1.5H2O
Crystal System: 
Monoclinic
Type Locality: 
Coronel Manuel Rodriguez Mine, Mejillones, Antofagasta Region, Chile