Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
3.523.95-4.10
1
7.18
👆🏻
Fracture
-
Uneven
Cleavage
{100} Perfect, {001} Perfect
{110} Perfect, {110} Perfect, {110} Perfect
Mohs Hardness
5-5.53.5-4
2
10
👆🏻
Chemical Composition
Na(Mn2+ ,Ca) 2Si 3O 8(OH)Michael OâDonoghue , Gems, Sixth Edition (2006)
(Zn,Fe)SMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references