Tenacity
-
Brittle
Solubility
-
-
Durability
-
-
Specific Gravity
2.9-3.52.74-2.90
1
7.18
👆🏻
Fracture
Conchoidal
Uneven, Splintery
Cleavage
{110} Perfect, {???} Distinct, {???} Distinct
Perfect on {100} and {001}
Mohs Hardness
5.5-64.5-5
2
10
👆🏻
Chemical Composition
(Mg,Fe2+ ) 2(Mg,Fe2+ ) 5Si 8O 22(OH) 2Anthony et al , Handbook of mineralogy (2001)
Ca 2NaHSi 3O 9Ulrich Henn and Claudio C.