1 Physical Properties
2.1 Tenacity
2.4 Solubility
Not Available
Not Available
2.6 Durability
Not Available
Not Available
2.8 Specific Gravity
3.16-3.232.60-2.65
1
7.18
2.9 Fracture
Conchoidal, Uneven, Conchoidal, Brittle, ConchoidalArthur Thomas, Gemstones (2009), Conchoidal to uneven
Uneven, Uneven, Gems, Sixth Edition (2006), Uneven, Conchoidal
2.10 Cleavage
[0001] indistinct, [1010] indistinct
Perfect on {001}, very good on {010}, imperfect on {110}
2.11 Mohs Hardness
2.15 Chemical Composition
Ca 5(PO 4) 3(F,OH,Cl)Walter Schumann , Gemstones of the world (2001) More from other references
NaAlSi 3O 8Michael OâDonoghue , Gems, Sixth Edition (2006)