Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
2.77-2.883.16-3.23
1
7.18
👆🏻
Fracture
Uneven
Conchoidal, Uneven, Conchoidal to uneven
Cleavage
Perfect basal
[0001] indistinct, [1010] indistinct
Mohs Hardness
2.55
2
10
👆🏻
Chemical Composition
K(Al,Cr) 3Si 3O 10(OH) 2Gemdat.org , Management Team (2012)
Ca 5(PO 4) 3(F,OH,Cl)Walter Schumann , Gemstones of the world (2001) More from other references