1. Oxides: These minerals contain oxygen bonded to a metal. Examples include:
* Hematite (Fe₂O₃): Red iron oxide
* Magnetite (Fe₃O₄): Black iron oxide
* Corundum (Al₂O₃): Found in rubies and sapphires
2. Sulfides: These minerals contain sulfur bonded to a metal. Examples include:
* Pyrite (FeS₂): Fool's gold
* Galena (PbS): The main ore of lead
* Sphalerite (ZnS): The main ore of zinc
3. Sulfates: These minerals contain sulfate (SO₄²⁻) ions. Examples include:
* Gypsum (CaSO₄ · 2H₂O): Used in plaster and drywall
* Barite (BaSO₄): Used as a drilling mud weighting agent
* Anhydrite (CaSO₄): A dehydrated form of gypsum
4. Halides: These minerals contain halogen elements like chlorine, fluorine, bromine, or iodine. Examples include:
* Halite (NaCl): Table salt
* Fluorite (CaF₂): Used in making optical lenses
* Sylvite (KCl): Used as a potassium fertilizer
5. Carbonates: These minerals contain carbonate (CO₃²⁻) ions. Examples include:
* Calcite (CaCO₃): The main component of limestone and marble
* Dolomite (CaMg(CO₃)₂): A common rock-forming mineral
* Malachite (Cu₂CO₃(OH)₂): A green copper mineral
6. Phosphates: These minerals contain phosphate (PO₄³⁻) ions. Examples include:
* Apatite (Ca₅(PO₄)₃(OH, F, Cl): Used in fertilizer and dentistry
* Monazite ((Ce, La, Th, Nd, Y)PO₄): A source of thorium and rare earth elements
It's important to note that there are other classes of non-silicate minerals, such as native elements (like gold, copper, and sulfur), sulfosalts (like tetrahedrite), and organic minerals (like amber).
