Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
3.13-3.263.05-3.21
1
7.18
👆🏻
Fracture
Conchoidal
Uneven, Subconchoidal, Splintery
Cleavage
None
Good on {110}, poor on {100}
Mohs Hardness
-99997.5
2
10
👆🏻
Chemical Composition
Ca 5(F,Cl)(PO 4) 3Arthur Thomas , Gemstones (2009)
Al 2SiO 5Michael OâDonoghue , Gems, Sixth edition (2006) More from other references