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Acanthite

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BCK737315

Acanthite

Kay Robertson collection
Classic Locality

Description Tabs

Description
Locality: 
Andreasbach Valley, Bad Lauterberg, Göttingen, Lower Saxony, Germany
Class: 
Crystals on Matrix
Size Range: 
Small cabinet (7-10 cm)
Size: 
7.4 × 5.2 × 3.1 cm
Description

You are bidding on a large sample from the Kay Robertson collection with numerous rough crystals of acanthite after argentite on quartz matrix with small clusters of white calcite crystals. A classic German specimen from the classic German locality collector! An early specimen in her collection, number #3342. 

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

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