Tenacity
-
Brittle
Solubility
-
insoluble
Durability
-
-
Specific Gravity
2.24-2.296.86-7.03
1
7.18
👆🏻
Fracture
Uneven, Subconchoidal, Conchoidal
Subconchoidal, Uneven, Conchoidal, Irregular
Cleavage
Very poor [100]
{100} imperfect, {110} indistinct; partings on {111} or {011}
Mohs Hardness
5-5.56-7
2
10
👆🏻
Chemical Composition
NaAlSi 2O 6 · H 2OMichael OâDonoghue , Gems, Sixth edition (2006) More from other references
SnO 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references