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Eugsterite & Darapskite

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CAM100359

Eugsterite & Darapskite

Description Tabs

Description
Locality: 
Pabellon de Pica, Chanabaya, Iquique Province, Tarapacá Region, Chile
Size Range: 
Miniature (4.5-7 cm)
Size: 
5.1 × 2.5 × 1.2 cm
Description

A good coverage of white acicular crystals of eugsterite, an uncommon sodium-calcium-sulphate, and light tan coloured glassy crystals of darapskite on matrix. A very nice example of these two uncommon species.

Mineral Data
What's on the rock

Eugsterite

Formula: 
Na4Ca(SO4)3·2H2O
Strunz: 
7.CD.25
Hardness: 
1.0 - 2.0
Colour: 
Colorless
Type Locality: 
Karapinar, Great Konya Basin, Konya Province, Central Anatolia Region, Turkey

Darapskite

Formula: 
Na3(SO4)(NO3)·H2O
Strunz: 
7.DG.05
Crystal System: 
Monoclinic
Hardness: 
2.5
Streak: 
White
Type Locality: 
Pampa del Toro, Oficina Lautaro, Taltal, Antofagasta Province, Antofagasta Region, Chile
Cartils Minerals

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