Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
2.25-2.402.52-2.60
1
7.18
👆🏻
Fracture
-
Uneven, Conchoidal
Cleavage
perfect on {010}; good on {100}
{0001} Imperfect, {1120} Imperfect
Mohs Hardness
5-5.55.5-6
2
10
👆🏻
Chemical Composition
NaCa 2Al 5Si 5O 20 · 6H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
KCa 2AlBe 2Si 12O 30 · 0.5H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references