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0 item @ $0.00  

Semseyite with Freibergite

#PD40140

Semseyite with Freibergite

#PD40140
Availability
Sold
Size
9 x 6 x 3 cm - Sm Cabinet 
Formula
Pb9Sb8S21 (RRUFF)
Locality
Herja mine, Baia Mare, Maramures Co., Romania
Tagged
sulfide

This is a complicated specimen loaded with several sulfosalts. The main mineral are fans of Semseyite, which are readily seen in the photos. There are also brilliant tetrahedrons of Freibergite, which are not readily seen in the photos. But these are fantastic under a scope. Sphenoidal Siderite is also present in rosette-like groups which have Boulangerite, which is typical for the locality. According to the old Scott Williams label Fizelyite and jamesonite is also present. I am not sure about these. It is a neat old specimen.

Semseyite

Formula
Pb9Sb8S21 
Crystal System
Monoclinic 
Crystal Habit
Radial, Spherical, Tabular 
Cleavage
Good, None, None 
Luster
Metallic 
Color
black, gray 
Streak
black 
Class
Monoclinic - Prismatic 
Fracture
Brittle 
Hardness
2.5 

Data courtesy of Webmineral.

Collection
Phillips Collection
Mineralpedia
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