Tenacity
Brittle
-
Solubility
-
-
Durability
-
-
Specific Gravity
5.9-6.32.54-2.78
1
7.18
👆🏻
Fracture
Conchoidal, Uneven
Conchoidal
Cleavage
On {101}, distinct; on {112}, interrupted; on {001}, indistinct
Good in three directions
Mohs Hardness
4.5-55-6
2
10
👆🏻
Chemical Composition
CaWO 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