Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
3.122.98-3.10
1
7.18
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Fracture
Uneven
Uneven, Conchoidal
Cleavage
None
{100} Perfect, {110} Good, {011} Distinct
Mohs Hardness
-99995.5-6
2
10
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Chemical Composition
Ca 9(Mg,Fe2+ )(PO 4) 6(PO 3OH)Anthony et al , Handbook of mineralogy (2001)
LiAl(PO 4)(OH,F)Walter Schumann , Gemstones of the world (2001) More from other references