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Gladite Bismuthinite & Krupkaite

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POL816524

Gladite Bismuthinite & Krupkaite

Description Tabs

Description
Locality: 
Vyšná Boca, Liptovský Mikuláš County, Zilina Region, Slovakia (Slovak Republic)
Class: 
Crystals on Matrix
Size Range: 
Miniature (4.5-7 cm)
Size: 
6.7 × 4.5 × 3.3 cm
Description

Big specimen with aggregates of needle-like crystals (to 1.5 cm) of rare Gladite, Bbismuthinite and rare Krupkaite on quartz-siderite matrix. Specimen like this was analysed.

Mineral Data
What's on the rock

Gladite

Formula: 
PbCuBi5S9
Strunz: 
2.HB.05a
Hardness: 
2.0 - 3.0
Streak: 
black
Type Locality: 
Gladhammar Mines, Västervik, Småland, Sweden

Bismuthinite

Formula: 
Bi2S3
Strunz: 
2.DB.05
Hardness: 
2.0 - 2.5
Streak: 
Lead-gray

Krupkaite

Formula: 
PbCuBi3S6
Strunz: 
2.HB.05a
Crystal System: 
Orthorhombic
Hardness: 
3.5 - 4.0
Streak: 
black
Type Locality: 
Barbora adit, Knöttel area (Knötel; Knödel; Knödlberg), Krupka (Graupen), Krušné Hory Mts (Erzgebirge), Ústí Region, Bohemia (Böhmen; Boehmen), Czech Republic

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