Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
2.24-2.292.25-2.40
1
7.18
👆🏻
Fracture
Uneven, Subconchoidal, Conchoidal
-
Cleavage
Very poor [100]
perfect on {010}; good on {100}
Mohs Hardness
5-5.55-5.5
2
10
👆🏻
Chemical Composition
NaAlSi 2O 6 · H 2OMichael OâDonoghue , Gems, Sixth edition (2006) More from other references
NaCa 2Al 5Si 5O 20 · 6H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references