Asbestos

Amosite is a commonly commercially-used synonym of grunerite first used by Hall. It may also be ferro-anthophyllite. The amosite referred to by Peacock is fibrous actinolite or cummingtonite. ...more on Wikipedia about "Amosite"

Amphibole defines an important group of dark-colored rock-forming inosilicate minerals composed of double chain SiO4 tetrahedra linked at the vertices and generally containing ions of iron and/ or magnesium in their structures. In chemical composition and general characteristics they are very similar to the pyroxenes and, like them, fall into three series according to their system of crystallization. The chief difference between amphiboles and pyroxenes is in cleavage: amphiboles form oblique cleavage planes, while pyroxenes have cleavages of approximately 90 degrees. Amphiboles are also specifically less dense than the corresponding pyroxenes, and in their optical characteristics they are distinguished by their stronger pleochroism and by the wider angle of extinction on the plane of symmetry. Amphiboles are the primary constituent of amphibolites. ...more on Wikipedia about "Amphibole"

Anthophyllite is an amphibole mineral: (Mg, Fe)7Si8O22(OH)2, magnesium iron inosilicate hydroxide. Anthophyllite is polymorphic with cummingtonite. It is a mineral of metamorphic origin produced by the alteration of magnesium rich igneous rocks and impure dolomitic limestone. Thus it is found in gneisses, schists, and some marbles. Anthophyllite also occurs as a retrograde metamorphic mineral derived from ultramafic rocks along with serpentine. Some forms of anthophyllite are lamellar or fibrous and are used as asbestos. ...more on Wikipedia about "Anthophyllite"

Asbestos (a misapplication of Latin: asbestos " quicklime" from Greek ἄσβεστος: a-, "not"; sbestos, "extinguishable") describes any of a group of fibrous metamorphic minerals of the hydrous magnesium silicate variety. The name is derived for its historical use in lamp wicks; the resistance of asbestos to fire has long been exploited for a variety of purposes. It was used in fabrics such as Egyptian burial cloths and Charlemagne's tablecloth, which, according to legend, he threw in a fire to clean. Asbestos occurs naturally in many forms (see below); it is mined from metamorphic deposits. ...more on Wikipedia about "Asbestos"

In her article " Equitas warns on asbestosis " of 22 June 2002, Helen Dunne, The British Daily Telegraph's Associate City Editor reported; "Equitas, the reinsurance vehicle which assumed the liabilities that once threatened to overwhelm Lloyd's of London, warned yesterday that asbestosis claims were the "greatest single threat" to its existence.", and "Equitas increased gross undiscounted provisions for future asbestosis claims by £3.2 billion in the two years ending March 2001, but has decided that further reserves this year are unnecessary.". This could be considered to indicate that appropriate financial previsions have now been made to address the issue, in this case (though this is not yet universally accepted). ...more on Wikipedia about "Asbestos and the law"

Asbestos is a town in southeastern Quebec, Canada on the Nicolet River and is the seat of the MRC d'Asbestos. The town covers an area of 29.55 sq. km. and has a population of 6,645. It is located in the centre of a triangle formed by the cities of Drummondville, Sherbrooke and Victoriaville. It is the site of the world's largest asbestos mine, and the mine has long been the town's largest employer. It was the site of the famous 1949 Asbestos Strike. Despite this some townpeople support changing the town's name due to the negative connotations asbestos now has. ...more on Wikipedia about "Asbestos, Quebec"

Asbestosis is a chronic inflammatory medical condition affecting the parenchymal tissue of the lungs. It occurs after long-term, heavy exposure to asbestos, e.g. in mining. Sufferers have severe dyspnea (shortness of breath) and are at an increased risk regarding several different types of lung cancer. ...more on Wikipedia about "Asbestosis" It's real shortopedia feeling!

Chrysotile is an asbestiform sub-group within the serpentine group of minerals. There are three known species of chrysotile: clinochrysotile (which is monoclinic), orthochrysotile (which is orthorhombic) and parachrysotile (which is also an orthorhombic polymorph of orthochrysotile). Thes varieties are all phyllosilicates. The chemical formulae for the three are the same: Mg3Si2O5(OH) with variable iron as Fe2+ substituting for magnesium. Chrysotile varies in color from gray-white to golden yellow to green. It has a hardness of 2.5 - 3. The three varieties form the fibrous members of the serpentine group and have been extensively mined as asbestos. ...more on Wikipedia about "Chrysotile"

This article is licensed under the GNU Free Documentation License.
It uses material from the Wikipedia . Direct links to the original articles are in the text.
If you use exact copy or modified of this article you should preserve above paragraph and put also : It uses material from the Shortopedia article about "Asbestos".
MAIN PAGE MAIN INDEX CONTACT US