Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
3.522.11-2.20
1
7.18
👆🏻
Fracture
-
Uneven
Cleavage
{100} Perfect, {001} Perfect
Perfect on {0001}
Mohs Hardness
5-5.5-9999
2
10
👆🏻
Chemical Composition
Na(Mn2+ ,Ca) 2Si 3O 8(OH)Michael OâDonoghue , Gems, Sixth Edition (2006)
Mg 6Cr 2(CO 3)(OH) 16 · 4H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references