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Mineralpedia Details for Empressite

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Empressite

Empressite

Formula
AgTe 
Crystal System
Orthorhombic 
Crystal Habit
Compact 
Cleavage
None, None, None 
Luster
Metallic 
Color
bronze, light bronze 
Streak
grayish black 
Class
Orthorhombic - Dipyramidal 
Fracture
Brittle - Conchoidal 
Hardness
3.5 
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Empressite from Rex mine, Boulder Co., Colorado, United States

Empressite
            from Rex mine, Boulder Co., Colorado, United States

Light goldish, granular crystals of Empressite skirting silvery, native Tellurium. The Empressite is difficult to see in the photos.  The Tellurium occupies much of the matrix and occurs in large 4-6mm flashy silvery crystal grains.  Excalibur label. 

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