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Galena with Sphalerite & Pyrite after Pyrrhotite

#53301

Galena with Sphalerite & Pyrite after Pyrrhotite

#53301
Availability
Sold
Size
6 x 3.5 x 3 cm - Sm Cabinet 
Formula
PbS (RRUFF)
Locality
Felsobanya, Baia Mare, Maramures Co., Romania
Tagged
sulfide

This is a good study specimen with a lot going on. The Pyrite pseudo after the Pyrrhotite is the cool thing. You can see that perched at the top and the dimension is 9mm across. The only other place I have seen this is here in the Black Hills at the Double Rainbow mine. One shot you can see the hexagonal outline of the former Pyrrhotite. Also the Galena maybe a spinel twin and has alot of jet black, lustorus Sphalerite crystals all over it. 

Galena

Formula
PbS 
Crystal System
Isometric 
Crystal Habit
Euhedral Crystals, Massive - Granular, Massive 
Cleavage
Perfect, Perfect, Perfect 
Luster
Metallic 
Color
light lead gray, dark lead gray 
Streak
grayish black 
Class
Isometric - Hexoctahedral 
Fracture
Brittle 
Hardness
2.5 

Data courtesy of Webmineral.

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