Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
3.43-3.442.25-2.40
1
7.18
👆🏻
Fracture
-
-
Cleavage
None Observed
perfect on {010}; good on {100}
Mohs Hardness
6.5-75-5.5
2
10
👆🏻
Chemical Composition
Ca 2(Mg,Al) 6(Si,Al,B) 6O 20Michael 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