Saturday 26 March 2016

asbestos - types of asbestos amosite,chrysolite,crocidolite,tremolite

MESOTHELIOMA 
Mesothelioma is a disease that results from asbestos. asbestos is the main reason for mesothelioma. Asbestos is a set of six natural fibrous minerals. the main causes of mesothelioma are the exposure to asbestos and smoking regularly. Mesothelioma is a type of lung cancer.


BEFORE GOING INTO DEEP,  FIRST I WANT TO EXPLAIN ABOUT THE  ASBESTOS 
ASBESTOS
asbestos is the fibrous amphibole that is used to make fireproof MATERIAL. inhaling of the fibrous can causes the asbestosis or lung cancer which is also known as mesothelioma.
any of various silicate minerals having a fibrous structure, in particular, the amphibole group and chrysotile; used in fire-retardant devices and clothing and in building materials, but now banned in many countries as known to cause mesothelioma and asbestosis - See more at: http://www.maxgyan.com/english/a/asbestos-meaning-in-hindi.html#sthash.4dhGOyq1.dpuf
 there are any of various silicate  minerals which having the fibrous structure.the amphibole group and chrysotile are used to make fireproof devices and building materials .but these asbestos are banned in many countries because they are harmful to the human organs.
also results in the mesothelima type of lung cancer.Serpentine and tremolite asbestos are considered the better varieties due to their greater flexibility and tensile strength, but anthophyllite asbestos has its uses such as in refractory cements.


THERE ARE SIX TYPES OF ASBESTOS

1.amosite
2.chrysolite
3.crocidolite
4.tremolite
5.anthophyllite
6.actinolite  

CHRYSOLITE
chrysolites are the general type of asbestos.this is also referred as white asbestos .the material has physical properties to make it desirable  inclusion in building materials.it has monoclinic or orthorombic types of  crystal system. they are used in ceilings,roofs,walls and floors of home.they are also used in pipe insulation,automobiles brake linings gaskets and boiler seals.here we can easily observed that chrysolite type of asbestos have more uses which increases the chances of exposing into the surrounding and which is also more responsible to produce the lung cancer (mesothelioma)  or other type of disease.
  chemical formula is   Mg3(Si2O5)(OH)4.



                                         
AMOSITE
this is more toxic than other types of asbestos.the exposure of these type of asbestos is more harmful  than other.it causes lung cancer , mesothelima ,and asbestosis.in natural condition  amosite is known as mineral grunerite.it is also referred as brown asbestos.the EPA (Environmental protection Agency ) of U.S has determined that the use of amosite asbestos is second most commonly used mineral type of asbestos in US . amosite is primarily mined in south africa. amosite is long  thin fiber and also brittle  which can break off easily.

USE OF AMOSITE ASBESTOS
amosite is used  to make cement sheet,thermal insulation ,chemical insulation ,electrical insulation ,roofing products ,fire protection ,and tiles
also used in the production of acoustic and anti-condensation material.




CROCIDOLITE
this is also known as blue asbestos.crocidolite is characterised  like a thin human hair which is more flexible and can bend at 90 degree angle without fracture.crocidolite may be responsible  for many deaths than other asbestos.when this type of asbestos expose into the environment and inhaled by any person then it become lodged in the linings of the lungs.it is more flexible so it does not break easily.it produces life-threading lung and abdominal condition which results mesothelioma,lung cancer and asbestosis.it is an estimation that about 18 %  of crocidolite miners die from mesothelioma.it has also been found that the  people who live near the crocidolite mines , felt easily into that risk for mesotheiloma or other diseases.


USE OF CROCIDOLITE  ASBESTOS
It is mainly used in industrial and commercial products.
1. it is used to make fire protection materials.
2.It is also used to make a storage to store the acid .
3.used in steam pipe to make a better insulation.
4.thermal insulation like gaskets.
5.chemical insulation insulation.
6.electrical wire to protect them from the fire.
7.in ceiling tiles.


TREMOLITE
it is an amphibole.tremolite is charaterised by sharp and  like a needle which can easily  inhaled by human.tremolite fibers are more strong,heat resistant and flexible so they can be used in commercial  products paint roofing materials.chemical composition of tremolite asbestos is....Ca2(Mg5.0-4.5Fe2+0.0-0.5)Si8O22(OH)2.this asbestos is toxic and inhaling of this leads to lung cancer and both pleural and peritoneal mesothelioma.it is an indicator of metamorphic grade but it converts into the diopside when temperature is being changes.

the color ranging of  tremolite asbestos is creamy white to dark green.the color  may change with change of the magnesium and iron molecules found in the minerals(tremolite asbestos).
  
this type of asbestos is often found in the vermiculite. vermiculite is a natural mineral that change its shape which change in the temperature.
 Image result for TREMOLITE ASBESTOS
USE OF TREMOLITE ASBESTOS

it is used in many commercial and industrial products like
1.insulation 
2.paints
3.sealants
4.plumbing materials
5.roofing materials

 

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