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Proustite & Arsenic & Calcite

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MBM1005006

Proustite & Arsenic & Calcite

Classic Locality

Description Tabs

Description
Locality: 
Schneeberg, Erzgebirge, Saxony, Germany
Class: 
Crystal Group/Cluster
Size Range: 
Miniature (4.5-7 cm)
Size: 
4.5 × 4 × 3.5 cm
Largest Crystal: 
0.30cm
Description

Proustite on native Arsenic combination specimens are rare from the historic Schneeberg District and this is a showy and rich example. Both sides of the knobby, layered Arsenic matrix host small vugs lined with splendent, silvery Proustite lathes up to 3mm.

All of the Proustites have classic "ruby-silver" color under bright light. 

Mineral Data
What's on the rock

Proustite

Formula: 
Ag3AsS3
Strunz: 
2.GA.05
Crystal System: 
Trigonal
Hardness: 
2.0 - 2.5

Arsenic

Formula: 
As
Strunz: 
1.CA.05
Crystal System: 
Trigonal
Hardness: 
3.5
Streak: 
Grey

Calcite

Polymorph of: 
Formula: 
CaCO3
Strunz: 
5.AB.05
Crystal System: 
Trigonal
Hardness: 
3.0
Streak: 
White