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Benjaminite & Krupkaite & Hammarite

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SHS194304

Benjaminite & Krupkaite & Hammarite

Description Tabs

Description
Locality: 
Julcani District, Huancavelica Department, Peru
Size Range: 
Thumbnail (1-3cm)
Size: 
1.2 × 0.9 × 0.9 cm
Description

 Benjaminite, hammarite and krupkaite on matrix

Mineral Data
What's on the rock

Benjaminite

Formula: 
(Ag,Cu)3(Bi,Pb)7S12
Strunz: 
2.JA.05e
Crystal System: 
Monoclinic
Hardness: 
3.5
Type Locality: 
Outlaw Mine, Round Mountain District, Toquima Range, Nye Co., Nevada, USA

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

Hammarite

Formula: 
Pb2Cu2Bi4S9
Strunz: 
2.HB.05a
Hardness: 
3.0 - 4.0
Streak: 
black
Type Locality: 
Gladhammar Mines, Västervik, Småland, Sweden
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