Isoclasite

Formula:  Ca2(PO4)(OH) . 2H2O

Origin of name:  From Greek for equal and fracture

 

Crystal system:  Monoclinic

Crystal class:  Unknown

Twinning: 

Unit cell: 

 

Colour:  Colourless, white

Diaphaneity:  Transparent to translucent

Luster:  Vitreous, pearly on cleavage

Habit:  Crystals prismatic, minute; cotton-like fibers

Hardness:  1.5

Specific gravity:  2.92

Cleavage:  1; {010} distinct

Tenacity: 

Streak: 

 

Synonyms/varieties:

 

Comments: 

 

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