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Mummeite & Hammarite

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SHS58396

Mummeite & Hammarite

Description Tabs

Description
Locality: 
Banská Štiavnica, Banská Štiavnica County, Banská Bystrica Region, Slovakia (Slovak Republic)
Size Range: 
Thumbnail (1-3cm)
Size: 
1.3 × 0.8 × 0.6 cm
Description

Mummeite and hammarite, friedrichite in matrix

Mineral Data
What's on the rock

Mummeite

Formula: 
(Cu,Ag)3-4(Bi,Pb)7-8S13
Strunz: 
2.JA.05f
Crystal System: 
Monoclinic
Hardness: 
4.0
Type Locality: 
Alaska Mine, Alaska Basin, Poughkeepsie Gulch, San Juan Co., Colorado, USA

Hammarite

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