Carlfriesite

Formula:  CaTe2TeO8

Origin of name:  For Carls Fries Jr., American and Mexican geologist

 

Crystal system:  Monoclinic

Crystal class:  2/m

Twinning:

Unit cell: a = 12.576, b = 5.662, c = 9.994, β = 115.56°

 

Colour:  Yellow

Diaphaneity:

Luster:

Habit:  Crystals well-formed in tiny sprays; botryoidal crusts

Hardness:  3.5

Specific gravity:  6.3

Cleavage:  1; {010} fair

Tenacity:

Streak:  Pale yellow

 

Synonyms/varieties:

 

Comments:

 

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