Brabantite

Formula:  CaTh(PO4)2

Origin of name:  From locality; Brabant pegmatite, Namibia

 

Crystal system:  Monoclinic

Crystal class:  2/m

Twinning:

Unit cell:

 

Colour:  Gray-brown, alters to reddish brown on surfaces

Diaphaneity:

Luster:

Habit:

Hardness:  5.5

Specific gravity:  4.72

Cleavage:  2; {001} and {100}

Tenacity:

Streak:

 

Synonyms/varieties:

 

Comments:

 

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