Tenacity
-
Brittle
Solubility
Soluble
insoluble
Durability
-
-
Specific Gravity
3.50-3.536.86-7.03
1
7.18
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Fracture
Conchoidal
Subconchoidal, Uneven, Conchoidal, Irregular
Cleavage
111 (perfect in four directions)
{100} imperfect, {110} indistinct; partings on {111} or {011}
Mohs Hardness
106-7
2
10
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Chemical Composition
C
SnO 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references