Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
2.9-3.53.05-3.08
1
7.18
👆🏻
Fracture
Conchoidal
Uneven, Irregular, Conchoidal
Cleavage
{110} Perfect, {???} Distinct, {???} Distinct
None
Mohs Hardness
5.5-66.5
2
10
👆🏻
Chemical Composition
(Mg,Fe2+ ) 2(Mg,Fe2+ ) 5Si 8O 22(OH) 2Anthony et al , Handbook of mineralogy (2001)
Ca 3Al 2(SiO 4) 3-x(OH) 4x (x=0.2 to 1.5)Anthony et al , Handbook of mineralogy (2001)