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Polybasite

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CAM190302

Polybasite

Classic Locality

Description Tabs

Description
Locality: 
Medenec (Kupferberg), Usti Region, Bohemia, Czech Republic
Size Range: 
Miniature (4.5-7 cm)
Size: 
5.4 × 2.8 × 1.6 cm
Largest Crystal: 
0.40cm
Description

A very fine sample of polybasite from Medenec with sharp, black, well-formed pseudo-hexagonal crystals up to 4 mm and crystalline masses on matrix.
Great locality piece, hard to find nowadays.

Mineral Data
What's on the rock

Polybasite

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

Seller Information

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