Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
2.90-3.102.98-3.10
1
7.18
👆🏻
Fracture
Splintery, Granular
Uneven, Conchoidal
Cleavage
None
{100} Perfect, {110} Good, {011} Distinct
Mohs Hardness
6-6.55.5-6
2
10
👆🏻
Chemical Composition
Ca 2(Mg,Fe) 5(OH) 2Walter Schumann , Gemstones of the world (2001) More from other references
LiAl(PO 4)(OH,F)Walter Schumann , Gemstones of the world (2001) More from other references