Geol 4350: Economic Geology
Fall, 2007

 

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Economic Geology: Minerals Old and New

1.Native elements
Graphite C
Sulfur S
Copper Cu8
Gold Au
Silver Ag

2. Halides
Halite NaCl
Fluorite CaF2
Sylvite KCl

3. Sulfides/Arsenides
Arsenopyrite FeAsS
Bornite Cu5FeS4
Chalcocite Cu2S
Chalcopyrite CuFeS2
Cinnabar** HgS
Covellite CuS
Enargite Cu3AsS4
Galena PbS
Molybdenite MoS2
Nickeline** NiAs
Pentlandite (Fe,Ni)9S8
Pyrargyrite** Ag3SbS3
Pyrite, Marcasite FeS2
Pyrrhotite Fe1-xS
Realgar-Orpiment** AsS/As2S3
Skudderudite** (Co,Ni)As3-x
Sphalerite ZnS
Stibnite** Sb2S3
Tetrahedrite (Cu,Fe)12(Sb,As)4S13

4. Oxides
Rutile TiO2
Pyrolusite MnO2
Hematite Fe2O3
Ilmenite FeTiO3
Corundum Al2O3
Magnetite Fe3O4
Chromite FeCr2O4
Cassiterite** SnO2
Cuprite** Cu2O

5. Hydroxides etc.
Goethite, limonite FeO(OH)
Bauxite: gibbsite and diaspore

 Al(OH)3, AlO(OH)

Co Bloom (erythrite)**  
Ni Bloom (annabergite)**

Ni3(AsO4)2.8H2O 

6. Carbonates
Calcite CaCO3
Aragonite CaCO3
Dolomite CaMg(CO3)2
Siderite FeCO3
Rhodochrosite** MnCO3
Azurite Cu3(OH)2(CO3)2
Malachite Cu2(OH)2(CO3)

7. Sulfates
Anhydrite CaSO4
Barite BaSO4
Alunite KAl 3 (SO 4 ) 2 (OH) 6
Gypsum CaSO4 . 2H2O

8. Phosphates
Apatite Ca5(PO4)3 [(OH), F, Cl]

9. Tungstates
Scheelite** CaWO4

10. Silicates
Augite (Ca,Mg,Fe)2Si2O6
Beryl Be3Al2Si6O18
Biotite K(Fe,Mg)3(AlSi3O10) (OH)2
Chlorite Mg5Al(AlSi3O10) (OH)8
Chloritoid (Fe++,Mg,Mn)2Al4Si2O10(OH)4
Chrysocolla** ~(Cu,Al)(SiO3).nH2O
Diopside CaMgSi2O6
Garnet: Almandine Fe3Al2Si3O12; Grossularite Ca3Al2Si3O12
Garnierite** (Ni,Mg)3Si2O5 (OH)4
Green Mica(fuchsite) Cr bearing muscovite
Hornblende NaCa2(Mg,Fe)5(AlSi7O22) (OH)2
Kaolinite Al4Si4O10 (OH)8
Kyanite,Andalusite Al2SiO5
Muscovite/sericite KAl2(AlSi3O10) (OH)2
Olivine : Mg - Forsterite, Fe - Fayalite

(Mg,Fe)2SiO4

Orthopyroxene (enstatite, hypersthene)

(Mg,Fe) SiO3 

Orthoclase (alkali feldspar) KAlSi3O8 - (K, Na) AlSi3O8
Plagioclase (Na,Ca)Al(Si,Al)Si2O8
Quartz (high, low T) SiO2
Rhodonite** MnSiO3
Serpentine Mg6Si4O10 (OH)8
Talc Mg3(Si4O10) (OH)2
Tourmaline Na,Mg,Fe,Al etc borosilicate with (BO3), (OH)
Tremolite, Actinolite Ca2(Mg,Fe)5Si8O22(OH)2

 

 

 

 

 

 

 

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Last Updated by Penny Morton , August 2007