Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
2.58-2.642.9-3.5
1
7.18
👆🏻
Fracture
Uneven, Splintery, Conchoidal
Conchoidal
Cleavage
Absent
{110} Perfect, {???} Distinct, {???} Distinct
Mohs Hardness
6.5-75.5-6
2
10
👆🏻
Chemical Composition
SiO2
(Mg,Fe2+ ) 2(Mg,Fe2+ ) 5Si 8O 22(OH) 2Anthony et al , Handbook of mineralogy (2001)