What is the formula of talc?
What is the formula of talc?
Talc is a hydrous silicate mineral composed of magnesium (Mg), silicon and oxygen (SiO2, silica), and water. Its chemical formula is Mg3Si4O10(OH)2.
What is the mineral talc used for?
Uses of talc It is also an important filler in paints and rubber. Talc is used commercially because it can retain fragrance, lustre, purity, softness and whiteness. Some of the major markets for talc are ceramics, pain paper and plastics. Ground talc is used in roofing and cosmetics.
What is talcs streak color?
| Talc | |
|---|---|
| Luster | Waxlike or pearly |
| Streak | White jot to pearl black |
| Diaphaneity | Translucent |
| Specific gravity | 2.58 to 2.83 |
Is talc sedimentary igneous or metamorphic?
metamorphic mineral
Talc is a metamorphic mineral resulting from the metamorphism of magnesian minerals such as serpentine, pyroxene, amphibole, olivine, in the presence of carbon dioxide and water.
What mineral is talc?
hydrated magnesium silicate
Talc is a mineral: it is hydrated magnesium silicate. Talc is a rock known as steatite or soapstone, which is composed of varying proportions of the mineral talc, often combined with other minerals such as chlorite and carbonate.
What is talc in chemistry?
Talc is a natural mineral, which, when pure, has the chemical composition Mg3(Si4O10)(OH)2 and is the softest known mineral, with a hardness of 1 on the Moh scale.
What is talcs luster?
Talc is usually green, white, gray, brown, or colorless. It is a translucent mineral with a pearly luster. It is the softest known mineral and is assigned a hardness of 1 on the Mohs Hardness Scale.
How hard is flourite?
Since Fluorite is a 4 on the scale it means that fluorite can scratch all the minerals below it but not be scratched by them. Also if a penny can scratch a mineral it rates a 3, a fingernail is 2.5, knife blade 5.5, glass 5.5 and steel file 6.5.
Is talc a igneous rock?
Talc is a metamorphic rock that most frequently forms at convergent boundaries between two tectonic plates.
