Wednesday 30 March 2016

Asbestos- types of asbestos anthophyllite, actinolite

ANTHOPHYLLITE 
anthophyllite asbestos is also known as  azbolen asbestos.this is also the part of  amphibole family of asbestos. magnesium iron inosilicate hydroxide(Mg2Mg5Si8O22(OH)2) is the chemical composition of this type of asbestos.it is generally brown or yellow in color. it is the product of metamorphism of magnesium rich rock. it is basically produced due to the metamorphic reaction which is due the break down of  talc in ultramafic  rocks with the presence of carbon dioxide  and water.it is also characterised by sharp ,fibres and relatively flexible.it can easily be inhaled. the presence of anthophyllite is also results to mesothelioma or other asbestos diseases.it takes more time to recognize the mesothelioma lung cancer.
 talc is basically a type of clay minerals.the chemical composition of  talc is (hydrateded magnesium silicate)H2Mg3(SiO3)4 or Mg3Si4O10(OH)2. it is mostly used in baby powder  as a talcum powder.
http://www.mindat.org/arphotos/360h240-0487043001372878516.jpg
 USE OF ANTHOPYLLITE ASBESTOS
 anthophyllite does not mostly used in commercial products or costumer products.
it is basically used in the such products which  containing  vermiculite and talc.




ACTINOLITE
Actinolite is the much similar to the tremolite asbestos.it is also the member of the amphibole family of asbestos.it has long ,flexible,sharp fibres .it is generally dark in color.it has been found that in 2002 ,about 30000 cubic yard of rock that was taken from a university property has consist of 10% of actinolite.actinolite has appears in different-2 forms like compact,brittle,fibrous,and also flexible.it has different-2 colors like white,green ,gray or brown.they are also tiny,sharp,fibers and very easy to inhale. after inhaling it is difficult to expel it again after absorbed by the body.
the chamical composition of actinolite is amphibole silicate mineral .the chemical formula of 
actinolte is Ca2(Mg4.5-2.5Fe2+0.5-2.5)Si8O22(OH)2.

actinoilte is made up of several minerals like   calcium,silicon,iron, magnesium,hydrogen,or oxygen.


https://upload.wikimedia.org/wikipedia/commons/thumb/b/b5/ActinolitePortugual.jpg/240px-ActinolitePortugual.jpg


USE OF ACTINOLITE
fireproofing
industrial materials
concrete construction
the combination of the actinolite and vermiculite can be used to produce light weight insulation materials.
 



 


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