Tenacity
-
Brittle
Solubility
-
-
Durability
-
-
Specific Gravity
2.25-2.403.90-4.00
1
7.18
👆🏻
Fracture
-
Conchoidal
Cleavage
perfect on {010}; good on {100}
Perfect on {001}, good on {210}, poor on {010}
Mohs Hardness
5-5.53-3.5
2
10
👆🏻
Chemical Composition
NaCa 2Al 5Si 5O 20 · 6H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
SrSO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references