Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
3.022.9-3.5
1
7.18
👆🏻
Fracture
Uneven, Conchoidal
Conchoidal
Cleavage
{0001} Poor
{110} Perfect, {???} Distinct, {???} Distinct
Mohs Hardness
-99995.5-6
2
10
👆🏻
Chemical Composition
Ca(Li 2Al)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012)
(Mg,Fe2+ ) 2(Mg,Fe2+ ) 5Si 8O 22(OH) 2Anthony et al , Handbook of mineralogy (2001)