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Kröhnkite Tamarugite & Metavoltine

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CLB615553

Kröhnkite Tamarugite & Metavoltine

ex collection Udo Hörig
Rare Mineral

Description Tabs

Description
Locality: 
La Vendida Mine, Sierra Gorda, Antofagasta Province, Antofagasta Region, Chile
Class: 
Combination
Size Range: 
Small cabinet (7-10 cm)
Size: 
8 × 6 × 3.8 cm
Description

Large specimen of rare blue kröhnkite with colorless, shiny tamarugite crystals and tiny, brown metavoltine grains.

Kröhnkite on all sides of the specimen.

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

Tamarugite

Formula: 
NaAl(SO4)2·6H2O
Strunz: 
7.CC.10
Hardness: 
3.0
Type Locality: 
Cerros Pintados ("Cerro Pintados"), Pampa del Tamarugal, El Tamarugal Province, Tarapacá Region, Chile...

Metavoltine

Formula: 
Na6K2FeFe6(SO4)12O2·18H2O
Strunz: 
7.DF.35
Hardness: 
2.5
Type Locality: 
Zagh Mine (Tangeh Zagh mine; Madeni Zakh), Haji Abad town, Bandar Abbas (Bandar-e Abbas), Bandar-Abbas County, Hormozgan Province, Iran

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