Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
2.9-3.52.30-2.40
1
7.18
👆🏻
Fracture
Conchoidal
Uneven, Conchoidal
Cleavage
{110} Perfect, {???} Distinct, {???} Distinct
{110} Perfect
Mohs Hardness
5.5-6-9999
2
10
👆🏻
Chemical Composition
(Mg,Fe2+ ) 2(Mg,Fe2+ ) 5Si 8O 22(OH) 2Anthony et al , Handbook of mineralogy (2001)
Na 8Al 6Si 6O 24(SO 4) · H 2OAnthony et al , Handbook of Mineralogy (2001)