Tenacity
-
Brittle
Solubility
-
-
Durability
-
-
Specific Gravity
2.9-3.54.00-4.65
1
7.18
👆🏻
Fracture
Conchoidal
Uneven, Sub-Conchoidal
Cleavage
{110} Perfect, {???} Distinct, {???} Distinct
Perfect on [1011]
Mohs Hardness
5.5-65-5.5
2
10
👆🏻
Chemical Composition
(Mg,Fe2+ ) 2(Mg,Fe2+ ) 5Si 8O 22(OH) 2Anthony et al , Handbook of mineralogy (2001)
ZnCO 3Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references