Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
2.9-3.52.42-2.58
1
7.18
👆🏻
Fracture
Conchoidal
Conchoidal, Splintery, ConchoidalWalter Schumann
Cleavage
{110} Perfect, {???} Distinct, {???} Distinct
[010] perfect
Mohs Hardness
5.5-64-5
2
10
👆🏻
Chemical Composition
(Mg,Fe2+ ) 2(Mg,Fe2+ ) 5Si 8O 22(OH) 2Anthony et al , Handbook of mineralogy (2001)
AlPO4 · 2(H2O)