Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
3.00-3.152.9-3.5
1
7.18
👆🏻
Fracture
-
Conchoidal
Cleavage
Indistinct
{110} Perfect, {???} Distinct, {???} Distinct
Mohs Hardness
5-5.55.5-6
2
10
👆🏻
Chemical Composition
Al 2SiO 5Michael OâDonoghue , Gems, Sixth edition (2006)
(Mg,Fe2+ ) 2(Mg,Fe2+ ) 5Si 8O 22(OH) 2Anthony et al , Handbook of mineralogy (2001)