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Sylvanite with Fluorite & Quartz

#47787

Sylvanite with Fluorite & Quartz

#47787
Availability
Sold
Size
4.5 x 2 x 1 cm - Miniature 
Formula
AgAuTe4 (RRUFF)
Locality
Spotted Horse mine, Fergus Co., Montana, United States
Tagged
tellurium , silver , gold

Here's a telluride locality, which you may not have heard of. The specimen is very rich with goldish platy Sylvanite 2-3mm wide.

Sylvanite

Formula
AgAuTe4 
Crystal System
Monoclinic 
Crystal Habit
Prismatic, Skeletal, Platy 
Cleavage
Perfect, None, None 
Luster
Metallic 
Color
yellowish silver white, white 
Streak
steel gray 
Class
Monoclinic - Prismatic 
Fracture
Uneven 
Hardness
1.5-2 

Data courtesy of Webmineral.

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