Calcioaravaipaite

Formula:  PbCa2Al(F,OH)9

Origin of name:  For calcium and aravaipaite

 

Crystal system:  Monoclinic

Crystal class:  Unknown

Twinning:

Unit cell:

 

Colour:  Colourless, white

Diaphaneity:  Transparent

Luster:  Vitreous

Habit:  Forms rectangular, twinned crystals to 0.5 x 0.3 x 0.7 mm and compact, white massive form

Hardness:  2.5

Specific gravity:  4.85

Cleavage:  1; {100} good

Tenacity:

Streak:  White

 

Synonyms/varieties:

 

Comments:

 

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