Tenacity
Slightly sectile
-
Solubility
1.04 x 10−25 g per 100 ml water (Ksp at 25°C = 2 x 10−32)
-
Durability
-
-
Specific Gravity
22.97-3.14
1
7.18
👆🏻
Fracture
Uneven
Uneven, Conchoidal
Cleavage
Prismatic {10 1 0}, perfect
{1011} Indistinct
Mohs Hardness
2-2.5-9999
2
10
👆🏻
Chemical Composition
HgSMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Ca(Mg 3)MgAl 5(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012)