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What is the structure 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. Talc is relatively pure in composition but can contain small amounts of aluminum, iron, manganese, and titanium.
What is the main component of talc?
Talc is a naturally occurring mineral, mined from the earth, composed of magnesium, silicon, oxygen, and hydrogen. Chemically, talc is a hydrous magnesium silicate with a chemical formula of Mg3Si4O10(OH)2.
Does talc have twinning?
Faceted gems are very rare and difficult to cut due to the perfect cleavage and Mohs hardness of only 1.0 but can be attractive with their pale green translucence. Talc is a Mohs hardness reference mineral….Talc.
| Crystallography: | Monoclinic – Prismatic |
|---|---|
| Twinning: | None |
What is characteristics of talc?
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. Talc is a monoclinic mineral with a sheet structure similar to the micas.
How many atoms are in talc?
3.1Computed Properties
| Property Name | Property Value | Reference |
|---|---|---|
| Heavy Atom Count | 19 | Computed by PubChem |
| Formal Charge | 0 | Computed by PubChem |
| Complexity | 43.5 | Computed by Cactvs 3.4.8.18 (PubChem release 2021.05.07) |
| Isotope Atom Count | 0 | Computed by PubChem |
Which component is used in baby powder?
Talc, or talcum, is a clay mineral, composed of hydrated magnesium silicate with the chemical formula Mg3Si4O10(OH)2. Talc in powdered form, often combined with corn starch, is used as baby powder.
Does talc have a crystal structure?
The Mohs scale of mineral hardness, based on scratch hardness comparison, defines value 1 as the hardness of talc, the softest mineral….
| Talc | |
|---|---|
| General | |
| Color | Light to dark green, brown, white, grey, colorless |
| Crystal habit | Foliated to fibrous masses, rare as platey to pyramidal crystals |
What are the characteristics of halite?
| Physical Properties of Halite | |
|---|---|
| Chemical Classification | Halide |
| Mohs Hardness | 2.5 |
| Specific Gravity | 2 |
| Diagnostic Properties | Cleavage, solubility, salty taste (The taste test is discouraged. Some minerals are toxic or contaminated by other people tasting them.) |
What is the composition of the mineral talc?
The exact composition of talc depends on the location of mining, since talc from different mining locations may contain significantly different proportions of MgO, SiO 2, and H 2O. Talc has a layered platey structure consisting of a magnesium hydroxide layer sandwiched between two silica layers.
What’s the difference between ground talc and soapstone?
Talc is also called steatite – or, in chemical terms, magnesium silicate hydrate. It is the main component of soapstone. Its crystals usually develop massive, leafy aggregates with laminar particles. Ground talc is called talcum. Its silicate layers lie on top of one another and are bound only by weak forces (residual van der Waals forces).
What kind of products can you use talc for?
Talc is a hydrated magnesium silicate that is commonly used in the manufacture of leather, rubber, paper, textiles, and ceramic tiles as well as iron and nickel products.
Where does most of the world’s talc come from?
Talc-carbonate ultramafics are also known from the Lachlan Fold Belt, eastern Australia, from Brazil, the Guiana Shield, and from the ophiolite belts of Turkey, Oman, and the Middle East . China is the key world talc and steatite producing country with an output of about 2.2M tonnes (2016), which accounts for 30% of total global output.