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Pyrargyrite & Argentopyrite

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CR28737

Pyrargyrite & Argentopyrite

With Antique Label

Description Tabs

Description
Locality: 
St Andreasberg, Harz Mountains, Lower Saxony, Germany
Size Range: 
Miniature (4.5-7 cm)
Size: 
5 × 4 × 3 cm
Largest Crystal: 
0.40cm
Description

Very nice and old specimen with sharp lustrous pyrargyrite crystals and some small microcrystals of argentopyrite on matrix.

Ex Mineralogical Museum Harvard University

Mineral Data
What's on the rock

Pyrargyrite

Formula: 
Ag3SbS3
Strunz: 
2.GA.05
Crystal System: 
Trigonal - Ditrigonal Pyramidal
Hardness: 
2.5

Argentopyrite

Formula: 
AgFe2S3
Strunz: 
2.CB.65
Crystal System: 
Orthorhombic
Hardness: 
3.5 - 4.0
Streak: 
Grey.
Type Locality: 
Jáchymov (St Joachimsthal), Jáchymov District (St Joachimsthal), Krušné Hory Mts (Erzgebirge), Karlovy Vary Region, Bohemia (Böhmen; Boehmen), Czech Republic
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