Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
2.9-3.53.95-4.10
1
7.18
👆🏻
Fracture
Conchoidal
Uneven
Cleavage
{110} Perfect, {???} Distinct, {???} Distinct
{110} Perfect, {110} Perfect, {110} Perfect
Mohs Hardness
5.5-63.5-4
2
10
👆🏻
Chemical Composition
(Mg,Fe2+ ) 2(Mg,Fe2+ ) 5Si 8O 22(OH) 2Anthony et al , Handbook of mineralogy (2001)
(Zn,Fe)SMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references