Tenacity
-
Brittle
Solubility
-
-
Durability
-
-
Specific Gravity
2.24-2.292.90-3.00
1
7.18
👆🏻
Fracture
Uneven, Subconchoidal, Conchoidal
Conchoidal, Uneven
Cleavage
Very poor [100]
None
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
CaBSiO 4(OH)Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references