Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
2.6-3.32.98-3.10
1
7.18
👆🏻
Fracture
Lamellar
Uneven, Conchoidal
Cleavage
Perfect 001
{100} Perfect, {110} Good, {011} Distinct
Mohs Hardness
2-2.55.5-6
2
10
👆🏻
Chemical Composition
(Mg,Fe)3(Si,Al)4O10(OH)2·(Mg,Fe)3(OH)6
LiAl(PO 4)(OH,F)Walter Schumann , Gemstones of the world (2001) More from other references