Cheralite

Formula:  (Ca,Ce,Th)(P,Si)O4

Origin of name:  From Kerala (Chera), a kingdom in ancient India

 

Crystal system:  Monoclinic

Crystal class:  2/m

Twinning:

Unit cell:

 

Colour:  Dark green to pale green

Diaphaneity:  Transparent

Luster:  Resinous to vitreous

Habit:  Masses

Hardness:  5

Specific gravity:  5.3

Cleavage:  3; {010} distinct, {100} difficult, {001} parting poor

Tenacity:

Streak:

 

Synonyms/varieties:

 

Comments:  Two varieties known, Cheralite and Cheralite-Ce

 

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