Krennerite

Formula:  (Au,Ag)Te2

Origin of name:  For J. Krenner, Hungarian mineralogist

 

Crystal system:  Orthorhombic

Crystal class:  mm2

Twinning: 

Unit cell: a = 16.54 Ǻ, b = 8.82 Ǻ, c = 4.46 Ǻ

 

Colour:  Silver-white to pale yellowish white

Diaphaneity: 

Luster:  Metallic

Habit:  Crystals short prismatic, vertically striated

Hardness:  2 to 3

Specific gravity:  8.63

Cleavage:  1; {001} perfect

Tenacity:  Subconchoidal to uneven; brittle

Streak: 

 

Synonyms/varieties:

 

Comments: 

 

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