Tenacity
-
Brittle
Solubility
-
insoluble
Durability
-
-
Specific Gravity
3.25-3.506.86-7.03
1
7.18
👆🏻
Fracture
Uneven
Subconchoidal, Uneven, Conchoidal, Irregular
Cleavage
Distinct
{100} imperfect, {110} indistinct; partings on {111} or {011}
Mohs Hardness
-99996-7
2
10
👆🏻
Chemical Composition
Ca 10Mg 2Al 4(SiO 4) 5(Si 2O 7) 2(OH) 4Ulrich Henn and Claudio C.
SnO 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references