Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
3.43-3.442.40-2.42
1
7.18
👆🏻
Fracture
-
-
Cleavage
None Observed
{010} Perfect, {001} Distinct
Mohs Hardness
6.5-74.5
2
10
👆🏻
Chemical Composition
Ca 2(Mg,Al) 6(Si,Al,B) 6O 20Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Ca 2B 6O 11 · 5H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references