Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
2.98-3.102.60-3.02
1
7.18
👆🏻
Fracture
Uneven, Conchoidal
-
Cleavage
{100} Perfect, {110} Good, {011} Distinct
Perfect
Mohs Hardness
5.5-6-9999
2
10
👆🏻
Chemical Composition
LiAl(PO 4)(OH,F)Walter Schumann , Gemstones of the world (2001) More from other references
(Mg,Fe2+ ) 5Al(Si 3Al)O 10(OH) 8Anthony et al , Handbook of mineralogy (2001)