Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
2.08-2.163.16-3.23
1
7.18
👆🏻
Fracture
Irregular/uneven
Conchoidal, Uneven, Conchoidal to uneven
Cleavage
distinct/good on {1011}
[0001] indistinct, [1010] indistinct
Mohs Hardness
4.55
2
10
👆🏻
Chemical Composition
CaAl 2Si 4O 12 -6H 2OArthur Thomas , Gemstones (2009)
Ca 5(PO 4) 3(F,OH,Cl)Walter Schumann , Gemstones of the world (2001) More from other references