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Acanthite

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CR159966

Acanthite

With Antique Label

Description Tabs

Description
Locality: 
Jáchymov, Krušné Hory, Karlovy Vary Region, Czech Republic
Size Range: 
Miniature (4.5-7 cm)
Size: 
6.3 × 4.2 × 3.2 cm
Largest Crystal: 
0.40cm
Description

Grey acanthite crystals on a bed of gemmy quartz microcrystals with pyrite and minor sphalerite.

With two fantastic old labels - specimen collected before 1900 !

Mineral Data
What's on the rock

Acanthite

Formula: 
Ag2S
Strunz: 
2.BA.35
Crystal System: 
Monoclinic - Prismatic
Hardness: 
2.0 - 2.5
Streak: 
lead grey
Type Locality: 
Jáchymov (St Joachimsthal), Jáchymov District (St Joachimsthal), Krušné Hory Mts (Erzgebirge), Karlovy Vary Region, Bohemia (Böhmen; Boehmen), Czech Republic