Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
2.54-2.783.89-4.18
1
7.18
👆🏻
Fracture
Conchoidal
Conchoidal, Uneven
Cleavage
Good in three directions
{0001}, {11 2 0} imperfect
Mohs Hardness
5-65.5
2
10
👆🏻
Chemical Composition
K(Ca,Na) 2Si 4O 10(OH,F) · H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Zn 2SiO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references