Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
3.03-3.182.82
1
7.18
👆🏻
Fracture
Uneven, Irregular, Conchoidal
-
Cleavage
{???} Indistinct
Perfect in one direction, indistinct in one direction
Mohs Hardness
7-7.56
2
10
👆🏻
Chemical Composition
Na(Mg 3)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012)
K2Na(Ca,Mn)2Ti[O|Si7O18(OH)]