Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
3.03-3.183.84
1
7.18
👆🏻
Fracture
Uneven, Irregular, Conchoidal
Subconchoidal, Conchoidal
Cleavage
{???} Indistinct
{0001} good, {10 1 0} parting
Mohs Hardness
7-7.57.5-8
2
10
👆🏻
Chemical Composition
Na(Mg 3)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012)
(Ca,Ce)(Al,Ti,Mg)12O19