MINERAL : BARYTE
Baryte has the chemical formula BaSO4. Baryte is also known as heavy spar or barite. The name Baryt comes from the Greek word barys due to its unusual heaviness for a non-metallic mineral.Baryte contains 65.7% of barium oxide and 34.3% SO2. It is found in nature as tabular crystals or in granular or massive form and has a high specific gravity. Barites is a material with environmental protecting function, it has a lot of advantages, such as a strong inertia, good stability, acid and alkali proof, moderate rigidity, high specific gravity, high whiteness, absorb in harmful radial. It is a very important barium mineral. Like other barium salts it burns with a green flame. There are also mixed crystals of Baryte with other metals: calcium, strontium and lead.
OCCURRENCE AND DEPOSITS
Baryte is Commonly found as a gangue mineral in metallic ore deposits of epithermal or mesothermal origin; but it may also be found as lenses or replacement deposits in sedimentary rocks, both of hypogene and supergene origin. It often occurs in veins with lead and zinc minerals, in hot spring deposits, and with hematite ore.It is usually found asthin to thick tubular baouned by alone or combination. But most oftenlyaggregates or clusters of tabular crystals with edges projecting into crest-like forms, Baryte occurs in a large number of depositional environments, and is deposited through a large number of processes including biogenic, hydrothermal, and evaporation, among others. Baryte originated from the Guangxi region of China. It is deposited in all the regions but mainly it is available in Asian and European countries. In Asia it is depositerd in China, India, Japan, Indonasea, Thailand, North Korea etc, and in Europe Russia, Germany, France, England, Netherlands, Spain, and Belgium etc. IT is also available in Canada, United States, South America, Colombia, Peru, Australia, and in Iran and UAE. In India the barite is abundantly available in cuddapah and Khammam districts from Andhra Pradesh as bedded type of deposits.
· Usualy colorless, andwhite sometimes weakly colored in yellow, green, blue or red.
· Its crystal structure is orthorhombic.
· Harness is between 3 and 3.5.
· Density of barite is 4.48 g/cm3.
· It has the specific gravity of 4.3.
· Baryte is Tabular parallel to base, fibrous, nodular to massive in crystal habit.
· Fracture is irregular and uneven.
· Its luster is vitreous and pearly.
· Cleavage is perfect.
· Streak is white.
· It is inspluble in water and unaffected by acids.
- In plastic industry, it is used as the filling of plastic ABS to make the products with bright color. It also can improve the intensity, stiffness and abrasive resistance.
- In rubber industry where the size of the product which is less than 500 mesh can be used in filling of rubber products.
- Barytes are mainly used in oil industries for the drilling purposes.
- It also has application in the manufacture of white pigment or extender.ery rapidly into an oxide it is used for traces of gases
- In the manufacture of explosives with graphite and china clay.
- Since it burns very rapidly into an oxide it is used for removing traces of gases.
1. What is the chemical formula of barite?
Ans : Baryte has got the chemical formula BaSO4.
2. How is barite found?
Ans : It is found as a gangue mineral in metallic ore deposits of epithermal or mesothermal origin also as lenses or replacement deposits in sedimentary rocks, both of hypogene and supergene origin.
3. What are the properties of barite?
Ans : Crystal structure is orthorhombic. Hardness between 3 and 3.5 with specific gravity of 4.3.
4. Mention few applications of barite?
Ans : a). Barytes are mainly used in oil industries for the drilling purposes. b). It also has application in the manufacture of white pigment or extender.
Industrial Minerals by R.K.Sinha