Tenacity
-
-
Solubility
-
Insoluble in acids
Durability
-
-
Specific Gravity
2.25-2.404.20-4.30
1
7.18
👆🏻
Fracture
-
Uneven, Conchoidal
Cleavage
perfect on {010}; good on {100}
{110} good, 100 moderate, parting on {092} and {011}
Mohs Hardness
5-5.56-6.5
2
10
👆🏻
Chemical Composition
NaCa 2Al 5Si 5O 20 · 6H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
TiO 2Michael OâDonoghue , Gems, Sixth Edition (2006)