Mcalpineite

Formula:  Cu3TeO6 . H2O

Origin of name:  After locality; McAlpine mine, Tuolumne Co., California

 

Crystal system:  Cubic

Crystal class:  Unknown

Twinning: 

Unit cell: 

 

Colour:  Dark green-black, emerald-green

Diaphaneity:  Transparent to translucent

Luster:  Adamantine

Habit:  µm size sheaves of fibrous or prismatic grains forming coatings and mm-size cryptocrystalline nodules lining vugs at Centennial Eureka Mine,

Hardness

Specific gravity

Cleavage:  None

Tenacity: 

Streak:  Light green

 

Synonyms/varieties:

 

Comments: 

 

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