bauxite
Aluminium oxide [Al2O3.2H2O]
dolomite
calcium-magnesium carbonate [CaCO3MgCO3]
Malachite
CuCO3.Cu(OH)
Galena
Lead Sulphide [PbS]
Haematite
Iron (III) oxide [Fe2O3]
Argenntite
Silver (I) Sulphide [Ag2S]
Cassiterite
Tin(iv) oxide [SnO2]
Zincblende
zinc sulphide [ZnS]
Cinnabar
Mercury(II) Sulphide [HgS]
Copper glance
Cupric Sulphide (Cu2S)