Sulfide minerals and their features
The sulfide minerals are a class of minerals containing sulfide (S2−) or disulfide (S22−) as the major anion
Pyrite
Chemical Formula : FeS2
Mohs Scale : 6 - 6.5
Crystal System : Cubic
Common İmpurities : Ni,Co,As,Cu,Zn,Ag,Au,Tl,Se,V
Specific Gravity : 5
Chalcopyrite
Chemical Formula : CuFeS2
Mohs Scale : 3.5 - 4
Crystal System : Tetragonal
Common impurities : Ag,Au,In,Tl,Se,Te
Specific Gravity : 4.1–4.3
Chalcopyrite is the most abundant copper ore mineral.
Bornite
Chemical Formula : Cu5FeS4
Mohs Scale : 3–3.25
Crystal System : Orthorhombic
Common İmpurities : Ag,Ge,Bi,In,Pb
Specific Gravity : 5.06–5.08
Sphalerite
Chemical Formula : ZnS
Mohs Scale : 3.5 - 4
Crystal System : Cubic
Common İmpurities : Mn,Cd,Hg,In,Tl,Ga,Ge,Sb,Sn,Pb,Ag,Co
Specific Gravity : 3.9 - 4.2
Sphalerite is an important ore of zinc; around 95% of all primary zinc is extracted from sphalerite ore.
Galena
Chemical Formula : PbS
Mohs Scale : 2.5 - 2.75
Crystal System : Cubic
Common İmpurities : Ag,Cu,Fe,Bi
Specific Gravity : 7.2 - 7.6
Lead is mainly extracted from sulphide ore called galena.,
The yellow pieces on galena are pyrite.
Stibnite
Chemical Formula : Sb2S3
Mohs Scale : 2
Crystal System : Orthorhombic
Specific Gravity : 4.63
It is the most important source for the metalloid antimony.
Pastes of Sb2S3 powder in fat or in other materials have been used since 3000 BC as eye cosmetics in the Mediterranean and farther afield; in this use, Sb2S3 is called kohl.
Molybdenite
Chemical Formula : MoS2
Mohs Scale : 1-1.5
Crystal System : Hexagonal
Specific Gravity : 4.73
Most common source for molybdenum.
Pyrite & Chalcopyrite & Galena & Malachite
Combination of pyrite (FeS) , chalcopyrite (CuFeS2), galena (PbS) and malachite (Cu2CO3(OH)2)