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Ambrinoite & Orpiment

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SMM855523

Ambrinoite & Orpiment

Type Locality

Description Tabs

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

Well visible groups of orange-red ambrinoite crystals on white matrix from the type locality and the only known, together there is yellow orpiment. Good specimen.

Boxed with Label
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

Orpiment

Formula: 
As2S3
Strunz: 
2.FA.30
Crystal System: 
Monoclinic
Hardness: 
1.5 - 2.0

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