Tenacity
-
Brittle
Solubility
-
-
Durability
-
-
Specific Gravity
2.58-2.802.97-3.03
1
7.18
👆🏻
Fracture
Conchoidal
Uneven, ConchoidalWalter Schumann, Conchoidal
Cleavage
{001} Good
{001} Poor
Mohs Hardness
5-5.57
2
10
👆🏻
Chemical Composition
(Mg,Fe2+ ) 3Si 2O 5(OH) 4Anthony et al , Handbook of mineralogy (2001)
CaB 2(SiO 4) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references