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Acanthite

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ESM222227

Acanthite

Description Tabs

Description
Locality: 
San Juan de Rayas Mine, Guanajuato, Guanajuato Municipality, Guerrero, Mexico
Class: 
Single Crystal
Size Range: 
Small cabinet (7-10 cm)
Size: 
2.3 × 7.2 × 4.4 cm
Description

Metallic black crystals with quartz crystals on matrix

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