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

Pyrite

From Spain

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

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

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

Molybdenite

Chemical Formula :  MoS2 

Mohs Scale : 1-1.5

Crystal System : Hexagonal

Specific Gravity : 4.73

Galena & Chalcopyrite & Quartz & Calcite

Stibnite

Chemical Formula :  Sb2S3 

Mohs Scale : 2

Crystal System : Orthorhombic

Specific Gravity : 4.63 

Pyrite & Chalcopyrite & Galena & Malachite

Combination of pyrite (FeS) , chalcopyrite (CuFeS2), galena (PbS) and malachite (Cu2CO3(OH)2)

Pyrite

Pyrite & Quartz

Sphalerite

Pyrite