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Eskimoite & Pyrite

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BCK660132

Eskimoite & Pyrite

Rare Mineral

Description Tabs

Description
Locality: 
Flathead Mine, Kofford Ridge, Flathead County, Montana, United States of America
Class: 
Crystals on Matrix
Size Range: 
Thumbnail (1-3cm)
Size: 
2.6 × 1.7 × 2 cm
Description

You are bidding on a small sample with some very nice bladed, striated black crystals of rare eskimoite in a vug of crystallized pyrite from one of the best localities for this rare sulfosalt. Some of the crystals are intergrown with aramayoite. There are also small vugs on the bottom of the specimen with small alunite crystals. Collected and analyzed by Bart Cannon. 

Mineral Data
What's on the rock

Eskimoite

Formula: 
Ag7Pb10Bi15S36
Strunz: 
2.JB.40b
Hardness: 
4.0
Type Locality: 
Ivigtut Cryolite deposit, Ivittuut (Ivigtut), Arsuk Fjord, Sermersooq, Greenland

Pyrite

Formula: 
FeS2
Strunz: 
2.EB.05a
Crystal System: 
Isometric
Hardness: 
6.0 - 6.5

Seller Information

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