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Sources of these fibrous amphiboles are several plutons in southern Nevada and Arizona and alluvial fans emanating from asbestos-containing bedrock. Thousands of lawsuits and billions of pounds in compensation later, the dangers of asbestos in talc-containing cosmetics are now firmly in the public eye. Humans have used asbestos for at least 10,000 years for just about everything. See more. Amosite was found in 10 lungs and crocidolite in 9; the average ratio of amosite to crocidolite was approximately 14:1. Enrich your vocabulary with the English Definition dictionary amphibole asbestos mineral, in rock, soil, and dust that can be transported by wind, water, cars, or on clothing after outdoor recreational activities. Amphibole fibres (crocidolite -blue asbestos, amosite- brown asbestos, tremolite, actinolite and anthophyllite) are brittle fibres and are often rod- or needle-like in appearance. Asbestos is generally made up of fiber bundles which easily separate into long, thin fibers. Define Amphibole Asbestos. and amphibole mineral groups, which have crystal- lized in the asbestiform habit causing them to be easily separated into long, thin, flexible, strong fibers when crushed or processed. The term amphibole asbestos refers to the remaining five types of the mineral, differentiated from chrysotile which falls into the serpentine class. The five other forms of asbestos belong to the inosillicates family and are members of the amphibole group. While amphibole asbestos deposits occur in mafic and ultramafic provinces, soil amphiboles occur evenly distributed across the U.S.A. ‘asbestos shingles’ ‘The inhalation of amphibole asbestos is now widely recognized as being highly dangerous to human health.’ ‘But his lungs lost the battle for health years ago when he worked with blue asbestos fibres, insulating for the telephone company.’ The use of asbestos and exposure to it has serious health consequences. am•phib•o•ly (æmˈfɪb ə li) n., pl. Whoever you believe, chrysotile asbestos is known to be a carcinogen and a leading cause of on-the-job illness and fatality. Fibrous amphibole asbestos from Libby (LAA) is composed of winchite (70%), richterite (9%), tremolite (5%), and non-amphibole minerals (16%) with a mean aspect ratio of 8.4±0.7. Here, Cosmetics Business investigates why the picture surrounding the natural mineral is so muddied and serious questions remain unanswered All asbestos fibers are hazardous to human health. Indeed, many sources regard chrysotile asbestos as being just as dangerous as amphibole asbestos. Definition of amphibole in the Fine Dictionary. ambiguity of speech, esp. But the talc industry remains notoriously shrouded, with disagreements and contestations at every turn. Owing to health hazards, notably from inhalation, use of asbestos has been restricted. Changing amphibole nomenclature, uncertainties in Fe +2 /Fe +3, and natural compositional variability result in samples of the asbestiform amphibole from Libby being variably classified as soda tremolite, richterite, sub-calcic actinolite, and winchite. Pronunciation of amphibole and its etymology. These other five types of asbestos that have been identified and mined commercially include amosite, a trade name name given to brown asbestos that is found in South African mines. means any of the following minerals, namely crocidolite, amosite, fibrous actinolite, fibrous anthophyllite, fibrous tremolite and any mixture containing any of those minerals; The principal varieties of asbestos are chrysotile, a serpentine material, and crocidolite, amosite, anthophyllite, tremolite and actinolite, which are amphiboles (4). PDF | On Jan 1, 2001, M. E. Gunter and others published Amphibole-Asbestos, Vermiculite Mining and Libby, Montana: What's in a Name? Learn more about the history of asbestos and … Positive identification of a specific fiber type requires microscopic analysis and examination. After seven months, both LAA- and AzA-exposed mice had indices of chronic immune dysfunction … Amphibole Asbestos synonyms, Amphibole Asbestos pronunciation, Amphibole Asbestos translation, English dictionary definition of Amphibole Asbestos. amphibole - WordReference English dictionary, questions, discussion and forums. A class of asbestos that includes silicates of magnesium, iron, calcium, and sodium. Libby Amphibole asbestos; CASRN Not Applicable . | Find, read and cite all the research you need on ResearchGate Type: noun; Copy to clipboard; Details / edit; Open Multilingual Wordnet. Serpentine vs Amphibole Asbestos: Uses and Dangers . amphibole is turned into an adjective and used as a pre x to the word asbestos: anthophyllitic asbestos, tremolitic asbestos . Where the chemical composition of the amphibole is kno wn, the asbestos sheet definition in English dictionary, asbestos sheet meaning, synonyms, see also 'asbestosis',assets',asbestine',asst'. from uncertainty of the grammatical construction rather than of the meaning of the words, as in The Duke yet lives that Henry shall depose. Meaning of asbestos, amphibole. Asbestos, Amphibole "Asbestos, Amphibole" is a descriptor in the National Library of Medicine's controlled vocabulary thesaurus, MeSH (Medical Subject Headings) . Asbestos is a naturally occurring mineral and comes in both many types and even colors. Included in the definition are chrysotile; crocidolite, asbestiform grunerite (amosite); anthophyllite asbestos: tremolite asbestos: and actino- lite asbestos. Serpentine asbestos develops in a layered or tiered form, whereas amphibole asbestos has a chain-like structure. C57BL/6 mice were exposed by oropharyngeal aspiration to fiber suspensions at a very low dose of 3μg/mouse. 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