Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
2.823.65-4.55
1
7.18
👆🏻
Fracture
-
Conchoidal
Cleavage
Perfect in one direction, indistinct in one direction
None, but may exhibit slight parting
Mohs Hardness
67.5-8
2
10
👆🏻
Chemical Composition
K2Na(Ca,Mn)2Ti[O|Si7O18(OH)]
(Mg,Zn)Al 2O 4Gemdat.org , Management Team (2012)