Moving mountains for you
Switch currency

Current Live Auctions

Current Live Fixed Price Sales

Acanthite Psm Polybasite

Views:
Watches:
MSD834349

Acanthite Psm Polybasite

Pseudomorph

Description Tabs

Description
Locality: 
El Cubo Mine, Guanajuato, Guanajuato, Mexico
Class: 
Massive/Crystalline
Size Range: 
Small cabinet (7-10 cm)
Size: 
7 × 5 × 2.5 cm
Description

This is an unusual, rich and excellent pseudomorphosis of Acanthite (analyzed by Joy Desor), which has displaced Polybasite. Accompanied by orange Sphalerite (analyzed) and white tabular Baryte crystals.

Former collection Kuno Pliester, who bought this rarely seen specimen from Lothar Otter in 1980.

The minerals listed on the label are not correct.

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
Labels
Label Images - only: Acanthite Psm Polybasite