| MINERAL
GROUPS
USING CHEMICAL CLASSIFICATION |
|||
|
N
S
|
CHEMICAL GROUP | MINERAL | CHEMICAL FORMULA |
|
elements |
graphite, diamond | C | |
| native copper | Cu | ||
| oxides | hematite | Fe2O3 | |
| magnetite | Fe3O4 | ||
| corundum | Al2O3 | ||
| sulfides | galena | PbS | |
| sphalerite | ZnS | ||
| pyrite | FeS2 | ||
| sulfates | gypsum | CaSO4 - 2 H2O | |
| barite | BaSO4 | ||
| halides | halite | NaCl | |
| fluorite | CaF2 | ||
| carbonates | calcite | CaCO3 | |
| dolomite | Ca,Mg(CO3)2 | ||
|
S
|
olivine | olivine | (Mg,Fe)2 SiO4 |
| pyroxenes | augite (pyroxene) | complex silicate | |
| amphiboles | hornblende (amphibole) | complex silicate with hydroxyl (water) groups | |
| calcium-rich plagioclase felspars | labradorite | NaAlSi3O8 to CaAlSi2O8 | |
| sodium-rich plagioclase feldspars | albite | NaAlSi3O8 to CaAlSi2O8 | |
| potassium feldspars | microcline, orthoclase | KAlSi3O8 | |
| garnets | almandine, pyrope | complex silicate | |
|
sheet silicates |
muscovite mica | KAl2(AlSi 3O10) (OH) | |
| biotite mica | K(Mg,Fe)3 (AlSi 3O10)(OH)2 | ||
| talc | Mg3Si4010(OH)2 | ||
| silica | quartz, chalcedony | SiO2 | |