Tenacity
Brittle
-
Solubility
-
-
Durability
-
-
Specific Gravity
2.90-3.002.24-2.29
1
7.18
👆🏻
Fracture
Conchoidal, Uneven
Uneven, Subconchoidal, Conchoidal
Cleavage
None
Very poor [100]
Mohs Hardness
5-5.55-5.5
2
10
👆🏻
Chemical Composition
CaBSiO 4(OH)Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
NaAlSi 2O 6 · H 2OMichael OâDonoghue , Gems, Sixth edition (2006) More from other references