Tenacity
Brittle
-
Solubility
-
-
Durability
-
-
Specific Gravity
5.9-6.33.03-3.18
1
7.18
👆🏻
Fracture
Conchoidal, Uneven
Uneven, Irregular, Conchoidal
Cleavage
On {101}, distinct; on {112}, interrupted; on {001}, indistinct
{???} Indistinct
Mohs Hardness
4.5-57-7.5
2
10
👆🏻
Chemical Composition
CaWO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Na(Mg 3)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012)