Tenacity
-
Slightly sectile
Solubility
insoluble in water
1.04 x 10−25 g per 100 ml water (Ksp at 25°C = 2 x 10−32)
Durability
-
-
Specific Gravity
2.51-2.632
1
7.18
👆🏻
Fracture
Fibrous
Uneven
Cleavage
Perfect basal
Prismatic {10 1 0}, perfect
Mohs Hardness
2.5-4.52-2.5
2
10
👆🏻
Chemical Composition
Mg 3(Si 2O 5)(OH) 4Gemdat.org , Management Team (2012)
HgSMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references