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Antofagastaite & Kröhnkite

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JYJ765461

Antofagastaite & Kröhnkite

Description Tabs

Description
Locality: 
Cerro Mejillones, Mejillones Peninsula, Antofagasta Province, Antofagasta Region, Chile
Class: 
Crystals on Matrix
Size Range: 
Small miniature (3-4.5 cm)
Size: 
4.3 × 3.7 × 2.4 cm
Description

Colourless antofagastaite associated with yellow-orange metasideronatrite and blue kröhnkite. Beautiful assemblage, XRD confirmed. Analysis attached. 

Rare mineral. 

 

Mineral Data
What's on the rock

Antofagastaite

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

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
Analysis
Analysis Report - only: Antofagastaite & Kröhnkite