Mineral Names and Chemical Formulae - GEOL 333

Minerals and chemical formulae you need to know for the MIDTERM EXAM on Friday, Feb. 26.

Silicates
Olivine Group
    Forsterite = Mg2SiO4
    Fayalite = Fe2SiO4
Pyroxene Group
    Orthopyroxene = (Mg, Fe2+)2 Si2O6
    Clinopyroxene = Ca(Mg, Fe2+)Si2O6
Hornblende
Kaolinite, Serpentine, Muscovite, Biotite, Illite, Smectite
Quartz = SiO2
Feldspar - Plagioclase Feldspar Group and Alkali Feldspar Group
    Anorthite (plagioclase) = CaAl2Si2O8
    Albite (plagioclase and alkali) = NaAlSi3O8
    Sanidine = orthoclase = microcline (all alkali) = KAlSi3O8
Zeolite

Carbonates
Calcite = Aragonite = CaCO3
Dolomite = CaMg(CO3)2

Sulfates
Gypsum = CaSO4. 2H2O
Barite = BaSO4

Halides
Halite = NaCl
Fluorite = CaF2

Phosphates
Apatite

Native Elements
Native copper = Cu
Native sulfur = S
Diamond = graphite = C

Sulfides
Pyrite = FeS2
Chalcopyrite = CuFeS2
Sphalerite = ZnS
Galena = PbS

Oxides
Corundum = Al2O3
Hematite = Fe2O3
Magnetite = Fe3O4

Hydroxides
Goethite = FeOOH