Moving mountains for you
Switch currency

Current Live Auctions

Current Live Fixed Price Sales

Proustite Xanthoconite & Polybasite

Views:
Watches:
CR30662

Proustite Xanthoconite & Polybasite

Rare Mineral

Description Tabs

Description
Locality: 
Imiter Mine, Tinghir Province, Drâa-Tafilalet Region, Morocco
Size Range: 
Thumbnail (1-3cm)
Size: 
2.5 × 1.8 × 1.3 cm
Description

Beautiful and very rich specimen of deepred proustite crystals up to 2 mm with smaller orange xanthoconite and minor polybasite crystals.

There are also some very small violet-red blades of fettelite on the specimen.

Very beautiful under the microscope !

Mineral Data
What's on the rock

Proustite

Formula: 
Ag3AsS3
Strunz: 
2.GA.05
Crystal System: 
Trigonal
Hardness: 
2.0 - 2.5

Xanthoconite

Formula: 
Ag3AsS3
Strunz: 
2.GA.10
Crystal System: 
Monoclinic
Hardness: 
2.0 - 3.0
Type Locality: 
Himmelsfürst Mine, Brand-Erbisdorf, Freiberg District, Erzgebirge, Saxony, Germany

Polybasite

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