Tenacity
-
-
Solubility
insoluble in water
-
Durability
-
-
Specific Gravity
2.51-2.633.16-3.23
1
7.18
👆🏻
Fracture
Fibrous
Conchoidal, Uneven, Conchoidal to uneven
Cleavage
Perfect basal
[0001] indistinct, [1010] indistinct
Mohs Hardness
2.5-4.55
2
10
👆🏻
Chemical Composition
Mg 3(Si 2O 5)(OH) 4Gemdat.org , Management Team (2012)
Ca 5(PO 4) 3(F,OH,Cl)Walter Schumann , Gemstones of the world (2001) More from other references