Tenacity
-
Brittle
Solubility
-
Soluble
Durability
-
-
Specific Gravity
3.003.25-3.35
1
7.18
👆🏻
Fracture
Uneven, Splintery
Conchoidal, ConchoidalWalter Schumann
Cleavage
perfect along {110}.
Perfect in three directions
Mohs Hardness
5-65
2
10
👆🏻
Chemical Composition
Ca 2(Mg,Fe) 5Si 8O 22(OH) 2Ulrich Henn and Claudio C.
CuSiO 2(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references