Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
2.25-2.403.43-3.44
1
7.18
👆🏻
Fracture
-
-
Cleavage
perfect on {010}; good on {100}
None Observed
Mohs Hardness
5-5.56.5-7
2
10
👆🏻
Chemical Composition
NaCa 2Al 5Si 5O 20 · 6H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Ca 2(Mg,Al) 6(Si,Al,B) 6O 20Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references