Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
3.65-4.552.82
1
7.18
👆🏻
Fracture
Conchoidal
-
Cleavage
None, but may exhibit slight parting
Perfect in one direction, indistinct in one direction
Mohs Hardness
7.5-86
2
10
👆🏻
Chemical Composition
(Mg,Zn)Al 2O 4Gemdat.org , Management Team (2012)
K2Na(Ca,Mn)2Ti[O|Si7O18(OH)]