1 Physical Properties
1.1 Tenacity
1.2 Solubility
Soluble
1.04 x 10−25 g per 100 ml water (Ksp at 25°C = 2 x 10−32)
1.3 Durability
Not Available
Not Available
1.4 Specific Gravity
1.5 Fracture
Uneven, Brittle, Metallic
Uneven, Uneven, Gemstones (2009), Brittle
1.6 Cleavage
Indistinct on {011}
Prismatic {10 1 0}, perfect
1.7 Mohs Hardness
1.8 Chemical Composition
CuFeS 2Anthony et al , Handbook of mineralogy (2001)
HgSMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references