Tenacity
-
Brittle
Solubility
-
-
Durability
-
-
Specific Gravity
3.13-3.262.72-2.75
1
7.18
👆🏻
Fracture
Conchoidal
Uneven
Cleavage
None
Perfect on [001], good on [010], imperfect on [110]
Mohs Hardness
-99996-6.5
2
10
👆🏻
Chemical Composition
Ca 5(F,Cl)(PO 4) 3Arthur Thomas , Gemstones (2009)
Ca(70-90%)Na(30-10%)(Al,Si)AlSi 2O 8Michael OâDonoghue , Gems, Sixth Edition (2006)