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Cuatrocapaite-(NH4) & Torrecillasite

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JYJ691190

Cuatrocapaite-(NH4) & Torrecillasite

Description Tabs

Description
Locality: 
Torrecillas Mine, Salar Grande, Iquique Province, Tarapacá Region, Chile
Class: 
Crystals on Matrix
Size Range: 
Thumbnail (1-3cm)
Size: 
2.2 × 1.4 × 0.8 cm
Description

Rare cuatrocapaite-(NH4) (confirmed!) with needles of torrecillasite on native arsenic. 

Very rare!

Mineral Data
What's on the rock

Cuatrocapaite-(NH4)

Formula: 
(NH4)3(NaMg☐)(As2O3)6Cl6·16H2O
Crystal System: 
Trigonal
Colour: 
White
Type Locality: 
Torrecillas mine, Salar Grande, Iquique Province, Tarapacá Region, Chile

Torrecillasite

Formula: 
Na(As,Sb)3+4O6Cl
Hardness: 
2.5 - 0.0
Colour: 
Colorless
Streak: 
White
Type Locality: 
Torrecillas mine, Salar Grande, El Tamarugal Province, Tarapacá Region, Chile