It is used for: special lenses and prisms and quartz-glass tubes for unlamps laboratory tubes and crucibles glass.
The platelet particle shape of Mica offers excellent flexural modulus properties, improved heat resistance, electrical properties and mechanical properties.
Talc, the softest of all minerals is known to everyone because of talcum powder. The softness, flakiness, and stability of talc makes it a desirable substance for many purpose.
In making the body composition of several types of procelain, china and earthenware and also in the preparation of glazes and enamel.
Uses: In cements and mortars, production of lime, limestone is used in the steel industry.
Dolomite
Uses in some cements, as a source of magnesium and as mineral specimens.
| Calcium Oxide | CaO | 29% ( + 1% ) |
| Magnesium Oxide | MgO | 21% ( + 1% ) |
| Silica | SiO2 | 2% ( + 1% ) |
| Alumina | Al2O3 | 0.15% ( + 0.05% ) |
| Ferric Oxide | Fe2O3 | 0.15% ( + 0.05% ) |
| Loss On Ignition | LOI | 45% ( + 2% ) |
| PROBABLE COMPOSITION | ||
| PCalcium Carbonate | CaCO3 | 50% ( + 2% ) |
| Magnesium Carbonate | MgCO3 | 45% ( + 2% ) |
