Tenacity
-
-
Solubility
-
insoluble
Durability
-
-
Specific Gravity
2.90-3.106.46-6.57
1
7.18
👆🏻
Fracture
Splintery, Granular
Uneven, ConchoidalWalter Schumann, Conchoidal
Cleavage
None
Good [110] and [021]
Mohs Hardness
6-6.53-3.5
2
10
👆🏻
Chemical Composition
Ca 2(Mg,Fe) 5(OH) 2Walter Schumann , Gemstones of the world (2001) More from other references
PbCO 3Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references