Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
3.89-4.182.54-2.78
1
7.18
👆🏻
Fracture
Conchoidal, Uneven
Conchoidal
Cleavage
{0001}, {11 2 0} imperfect
Good in three directions
Mohs Hardness
5.55-6
2
10
👆🏻
Chemical Composition
Zn 2SiO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
K(Ca,Na) 2Si 4O 10(OH,F) · H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references