Tenacity
Brittle
-
Solubility
insoluble in water
-
Durability
-
-
Specific Gravity
5.00-5.202.65
1
7.18
👆🏻
Fracture
Uneven, Conchoidal, ConchoidalWalter Schumann
ConchoidalWalter Schumann
Cleavage
Indistinct on {001}; partings on {011} and {111}
None
Mohs Hardness
6-6.5-9999
2
10
👆🏻
Chemical Composition
FeS 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
SiO 2Ulrich Henn and Claudio C.