Question: Which of the following is not a mineral?
A Quartz
B Mica
C Peat
D Feldspar
Answer: Peat
| Mineral | Chemical Composition | Uses |
| Quartz | SiO2 | · Used in glassmaking · Electronics |
| Mica | Various | · Used in electrical insulation · Cosmetics · As a substrate for glitter |
| Feldspar | Various | · Essential in ceramics · In glassmaking · As a component in igneous rocks |
| Calcite | CaCO3 | · Mainly used in the production of cement and as a building stone. |
| Halite (Salt) | NaCl | · Widely used as a seasoning, de-icing agent · Chemical industry |
| Gypsum | CaSO4·2H2O | · Used as a fertilizer · Manufacturing plaster products |
| Talc | Mg3Si4O10(OH)2 | · Used in cosmetics · Papermaking · As a lubricant |
| Pyrite | FeS2 | · Used in jewelry and occasionally in electronics |
| Bauxite | Al(OH)3 Al2O3 | · Used in transportation, · Packaging · Construction |
| Hematite | Fe2O3 | · Used in steel production · As a pigment in paint |
| Galena | PbS | · Used in batteries · In radiation shielding · Cosmetics |
| Magnetite | Fe3O4 | · Used in the production of iron and steel · As a natural magnet. |
| Barite | BaSO4 | · Used in drilling fluids in the oil and gas industry · As a filler in paints |