Moving mountains for you
Switch currency

Current Live Auctions

Current Live Fixed Price Sales

Acanthite & Polybasite

Views:
Watches:
MGR917534

Acanthite & Polybasite

Floater

Description Tabs

Description
Locality: 
Fresnillo Municipality, Zacatecas, Mexico
Class: 
Crystal Group/Cluster
Size Range: 
Thumbnail (1-3cm)
Size: 
2.2 × 1.6 × 0.4 cm
Description

Fine example of this rare mineral from Mexico. The specimen is lustrous all over and is even developed as a floater.

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

Polybasite

Formula: 
[(Ag,Cu)6(Sb,As)2S7][Ag9CuS4]
Strunz: 
2.GB.15
Crystal System: 
Monoclinic - Prismatic
Hardness: 
2.5 - 3.0
Streak: 
black