Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
2.52-2.603.85-3.94
1
7.18
👆🏻
Fracture
Uneven, Conchoidal
Conchoidal, Uneven
Cleavage
{0001} Imperfect, {1120} Imperfect
{010} Good, {100} Distinct
Mohs Hardness
5.5-65-5.5
2
10
👆🏻
Chemical Composition
KCa 2AlBe 2Si 12O 30 · 0.5H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
(Mn2+ ,Fe2+ ,Mg,Ca) 2(PO 4)(F,OH)Michael OâDonoghue , Gems, Sixth Edition (2006)