ACCURATE DEFINITIONS FOR ASBESTOS NSSGA POSITION: NSSGA supports sciencebased regulation that prevents harmful exposure to asbestos and all other harmful asbestiform fibers. ... asbestiform winchite amphibole; and; ... Second, an accurate definition for “asbestiform” properly excludes common rock dust, which has not been …Details


The group includes chrysotile, a member of the serpentine mineral group, and the amphibole minerals amosite, crocidolite, tremolite asbestos, actinolite asbestos, and anthophyllite asbestos. ... Definition of Asbestos ...Details

Amphibole | Define Amphibole at

Amphibole definition, any of a complex group of hydrous silicate minerals, containing chiefly calcium, magnesium, sodium, iron, and aluminum, and including hornblende, tremolite, asbestos, etc., occurring as important constituents of many rocks.Details

Asbestos | definition of asbestos by Medical dictionary

Looking for online definition of asbestos in the Medical Dictionary? asbestos explanation free. What is asbestos? Meaning of asbestos medical term. What does asbestos mean? ... The amphibole asbestos has different physical and chemical properties from chrysotile, states a Natural Resources Canada (NRCan) report.Details

What does amphibole mean? definition, meaning and ...

asbestos (a fibrous amphibole; used for making fireproof articles; inhaling fibers can cause asbestosis or lung cancer) hornblende (a green to black mineral of the amphibole group; consists of silicates of calcium and sodium and magnesium and iron)Details

asbestos | Definition of asbestos in English by Oxford ...

The asbestos minerals include chrysotile (white asbestos) and several kinds of amphibole, notably amosite (brown asbestos) and crocidolite (blue asbestos). The danger to health caused by breathing in highly carcinogenic asbestos particles has led to more stringent control of its useDetails

Chrysotile | definition of chrysotile by Medical dictionary

Looking for online definition of chrysotile in the Medical Dictionary? chrysotile explanation free. What is chrysotile? Meaning of chrysotile medical term. What does chrysotile mean? ... such materials often contain small quantities of amphibole asbestos impurities and even intentionally added amphiboles.Details

What does asbestos mean?

Webster Dictionary ( / 0 votes) Rate this definition:. Asbestos (noun). a variety of amphibole or of pyroxene, occurring in long and delicate fibers, or in fibrous masses or seams, usually of a white, gray, or greengray color.Details

Amphibole legal definition of amphibole Legal …

Definition of amphibole in the Legal Dictionary by Free online English dictionary and encyclopedia. What is amphibole? Meaning of amphibole as a legal term. What does amphibole mean in law? ... As to the claim of the greater reliability of asbestos body counts by light microscopy, ...Details

amphibole Dictionary Definition :

a grey or green fibrous mineral; an important source of commercial asbestos tremolite a white or pale green mineral (calcium magnesium silicate) of the amphibole group used as a form of asbestosDetails

Common Types of Asbestos Fibers, Serpentine Amphibole ...

Types Of Asbestos Fibers Chrysotile Asbestos is Common in Consumer Products Asbestos is the generic name for six naturally occurring minerals that have been used in commercial products for their strength, flexibility, low electrical conductivity, and resistance to heat and chemicals.Details

What Is Asbestos? | Health Risks and Mesothelioma

Actinolite asbestos is a variety of the subclassification of amphibole asbestos and, as such, its makeup and consistency is similar to other forms of this subset. Made predominantly of magnesium, actinolite asbestos is extremely rare and ranges in color from white to dark brown.Details

Asbestiform Minerals and Human Health USGS Archive

Asbestiform Minerals and Human Health. Asbestos is a commercialindustrial term with a long history, and is not a mineralogical definition. ‘‘Asbestos’’ in the latter half of the 20th century became widely used in regulatory language to refer to well developed, long, thin particles (fibers or fibrils) and fiber bundles of specific mineral compositions, …Details

Amphibole Wikipedia

Amphibole (/ ˈ æ m f ɪ b oʊ l /) is an important group of inosilicate minerals, forming prism or needlelike crystals, composed of double chain SiO 4 tetrahedra , linked at the vertices and generally containing ions of iron and/or magnesium in their structures.Details

Types of Asbestos: Serpentine vs. Amphibole

Types of Asbestos Asbestos is a group of six minerals that are classified as silicate minerals, composed of fibers that are formally referred to as thin fibrous crystals. In fact asbestos fibers are in most cases somewhat flexible, very durable and have very high levels of resistance to fire.Details

Am Ind Hyg J. 50( I1):613622 (1989) 4008 The …

The Regulatory and Mineralogical Definitions of Asbestos ... and amphibole mineral groups, which have crystal ... regulatory asbestos definition to bulk and airborne dust samples collected at this mine and reported over 70% asbes tos for airborne fibers satisfying the 3:1 or greater aspectDetails

Amphibole Asbestos definition of Amphibole Asbestos …

Amphibole Asbestos synonyms, Amphibole Asbestos pronunciation, Amphibole Asbestos translation, English dictionary definition of Amphibole Asbestos. n. Any of a large group of structurally similar silicate minerals, such as hornblende, that have a crystalline structure consisting of a double chain of...Details

Banning Asbestos in Products: S 742 | Department …

In addition to the amphibole fibers that fit the commercial definition of asbestos, other amphibole particle types can also occur, again intermixed at the microscopic scale. These other particle types are often referred to by mineralogists as fibrous (nonasbestiform), acicular (needlelike) and prismatic (prismlike) (Meeker and others, 2006).Details

Types of Asbestos Chyrsotile, Actinolite, Tremolite …

Amphibole asbestos has needleshaped fibers, and studies suggest it takes much less exposure to amphibole asbestos to cause cancer, compared to serpentine asbestos. Amosite and crocidolite are the most commercially valuable types of amphibole asbestos, while anthophyllite, tremolite and actinolite are considered noncommercial …Details

Amphibole definition of amphibole by The Free …

The two major types of asbestos fibers, serpentine and amphibole, have chemical and structural differences that may influence their interactions with cells. Asbestos fiber shape may trigger radicals Both zones are exposed at the surface and occur as steeply dipping, parallel tabular stockworks of chloritic, amphibole , feldspar gneiss.Details

What does amphibole group mean? definition, …

asbestos (a fibrous amphibole; used for making fireproof articles; inhaling fibers can cause asbestosis or lung cancer) tremolite (a white or pale green mineral (calcium magnesium silicate) of the amphibole group used as a form of asbestos)Details

Asbestos Wikipedia

The use of all types of asbestos in the amphibole group was banned in much of the Western world by the mid1980s, and in Japan by 1995. [citation needed] Some products that included amphibole types of asbestos included the following:Details

What does asbestos, amphibole mean?

Definition of asbestos, amphibole in the dictionary. Meaning of asbestos, amphibole. What does asbestos, amphibole mean? Information and translations of asbestos, amphibole in the most comprehensive dictionary definitions resource on the web.Details