Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
3.13-3.263.95-4.10
1
7.18
👆🏻
Fracture
Conchoidal
Uneven
Cleavage
None
{110} Perfect, {110} Perfect, {110} Perfect
Mohs Hardness
-99993.5-4
2
10
👆🏻
Chemical Composition
Ca 5(F,Cl)(PO 4) 3Arthur Thomas , Gemstones (2009)
(Zn,Fe)SMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references