Tenacity
-
Brittle
Solubility
-
-
Durability
-
-
Specific Gravity
1.65-1.993.19-3.23
1
7.18
👆🏻
Fracture
Uneven
Conchoidal
Cleavage
{010} Perfect, {110} Perfect
{110} good
Mohs Hardness
2-2.55-6
2
10
👆🏻
Chemical Composition
NaCaB 5O 6(OH) 6 · 5H 2OMichael OâDonoghue , Gems, Sixth Edition (2006)
KNa 2Li(Fe2+ ,Mn2+ ) 2Ti 2Si 8O 24Michael OâDonoghue , Gems, Sixth Edition (2006)