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Kröhnkite & Antofagastaite

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JYJ747513

Kröhnkite & Antofagastaite

Description Tabs

Description
Locality: 
Coronel Manuel Rodríguez Mine, Mejillones Peninsula, Antofagasta Province, Antofagasta Region, Chile
Class: 
Crystals on Matrix
Size Range: 
Miniature (4.5-7 cm)
Size: 
4.5 × 4.5 × 4.3 cm
Description

Very nice intense bluish-green kröhnkite associated with sideronatrite & antofagastaite (P-XRD confirmed) from the Coronel Manuel Rodriguez mine. 

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