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0 item @ $0.00  

Enstatite var. bronzite, (Platinum ore)

#62098

Enstatite var. bronzite, (Platinum ore)

#62098
Availability
Sold
Size
10 x 5.5 x 3.5 cm - Cabinet 
Formula
MgSiO3 (RRUFF)
Locality
Stillwater mine, Nye Co., Montana, United States
Tagged
ore mineral , platinum

Stillwater is the only operating platinum/palladium deposit in the USA. In this specimen the platinum is located in the bronzite, a variety of Enstatite. It is shown in the second photo and smaller areas of the other photos along with some sulfide mineralization. The note that came with the specimen says "extremely high grade platinum ore". There are sulfides throughout the matrix, and I have not bothered to really scrutinize the specimen. So, ponder that and know that the Stillwater complex is home to 7 type locality minerals.

Enstatite

Formula
MgSiO3 
Crystal System
Orthorhombic 
Crystal Habit
Massive - Fibrous, Lamellar 
Cleavage
Distinct, Distinct, None 
Luster
Vitreous - Pearly 
Color
white, yellowish green, brown, greenish white, gray 
Streak
gray 
Class
Orthorhombic - Dipyramidal 
Fracture
Brittle 
Hardness
5.5 

Data courtesy of Webmineral.

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