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Spryite & Argyrodite

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JYJ931747

Spryite & Argyrodite

Description Tabs

Description
Locality: 
Uchucchacua Mine, Oyon Province, Lima Department, Peru
Class: 
Crystals on Matrix
Size Range: 
Thumbnail (1-3cm)
Size: 
2.8 × 2 × 1.9 cm
Description

Grey metallic spryite with argyrodite and proustite on matrix. 

SEM-EDS no MA887. 

Mineral Data
What's on the rock

Spryite

Formula: 
Ag8(As3+0.5As5+0.5)S6
Crystal System: 
Orthorhombic
Hardness: 
2½ - 3
Colour: 
Black
Type Locality: 
Uchucchacua Mine, Oyon Province, Lima, Peru

Argyrodite

Formula: 
Ag8GeS6
Strunz: 
2.BA.70
Hardness: 
2.5 - 3.0
Type Locality: 
Himmelsfürst Mine, Brand-Erbisdorf, Freiberg District, Erzgebirge, Saxony, Germany