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Semseyite & Boulangerite

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SHS180557

Semseyite & Boulangerite

Description Tabs

Description
Locality: 
Herja Mine, Chiuzbaia, Baia Mare, Maramureș County, Romania
Class: 
Single Crystal
Size Range: 
Thumbnail (1-3cm)
Size: 
1.5 × 0.7 × 1.2 cm
Description

Semseyite and boulangerite on sphalerite

Mineral Data
What's on the rock

Semseyite

Formula: 
Pb9Sb8S21
Strunz: 
2.HC.10d
Hardness: 
2.5
Streak: 
Black
Type Locality: 
Baia Sprie mine (Felsöbánya mine), Baia Sprie (Felsöbánya), Maramureș Co., Romania

Boulangerite

Formula: 
Pb5Sb4S11
Strunz: 
2.HC.15
Crystal System: 
Monoclinic
Hardness: 
2.5 - 3.0
Colour: 
Lead grey
Streak: 
Brownish
Type Locality: 
Molières, Gard, Languedoc-Roussillon, France