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Ambrinoite

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SKY761077

Ambrinoite

Type Locality

Description Tabs

Description
Locality: 
Signols Quarry, Signols, Oulx, Torino Province, Piedmont, Italy
Class: 
Crystals on Matrix
Size Range: 
Thumbnail (1-3cm)
Size: 
1.6 × 1.4 × 1.2 cm
Description

Ambrinoite is a very rare new mineral (IMA 2009-071) that is found only in this locality worldwide, so it's a one locality mineral. Yellow associated mineral is sulphur.

In addition, it is the first K- NH4 sulfosalt, which add interest to the species:
Biagioni, C. et al. (2011): Ambrinoite, (K,NH4)2(As,Sb)8S13•H2O, a new mineral from Upper Susa Valley, Piedmont, Italy: the first natural (K,NH4)-hydrated sulfosalt. American Mineralogist, 96, 878-887.

Mineral Data
What's on the rock

Ambrinoite

Formula: 
[K,(NH4)]2(As,Sb)6(Sb,As)2S13·H2O
Strunz: 
2.HE.10
Hardness: 
0.0
Streak: 
Red
Type Locality: 
Signols Quarries, Signols, Oulx, Susa Valley, Torino Province, Piedmont, Italy

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Start 23 Jan 18:00
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