Formula: Ca3(PO4)2.2(a-Ca2SiO4)
Origin of name: for G. Nagelschmidt, English chemist
Crystal system: unknown
Crystal class: unknown
Twinning:
Unit cell:
Colour: colourless, pale yellow or brown
Diaphaneity: transparent
Luster:
Habit: anhedral grains, to 150 micron
Hardness:
Specific gravity: 3.07
Cleavage: 1; {001}(?) good
Tenacity:
Streak:
Synonyms/varieties:
Comments:
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