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Three polytypes of chrysotile are known. [8] These are very difficult to distinguish in hand specimens, and polarized light microscopy [6] must normally be used. Some older publications refer to chrysotile as a group of minerals—the three polytypes listed below, and sometimes pecoraite as well—but the 2006 recommendations of the International Mineralogical Association prefer to treat it as ...
Amosite and crocidolite are considered the most hazardous asbestos fiber types; [5] however, chrysotile asbestos has also produced tumors in animals and is a recognized cause of asbestosis and malignant mesothelioma in humans, [6] and mesothelioma has been observed in people who were occupationally exposed to chrysotile, family members of the ...
Asbestos (/ æ s ˈ b ɛ s t ə s, æ z-,-t ɒ s / ass-BES-təs, az-, -toss) [1] is a group of naturally occurring, toxic, carcinogenic and fibrous silicate minerals.There are six types, all of which are composed of long and thin fibrous crystals, each fibre (particulate with length substantially greater than width) [2] being composed of many microscopic "fibrils" that can be released into ...
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The most common asbestiform mineral is chrysotile, commonly called "white asbestos", a magnesium phyllosilicate part of the serpentine group. Other asbestiform minerals include riebeckite, an amphibole whose fibrous form is known as crocidolite or "blue asbestos", and brown asbestos, a cummingtonite-grunerite solid solution series.
“My guy friends. They feel the same. But I’d never tell my girlfriend. She’s a feminist. She’d break up with me.” | Opinion
Diogenes Archangel-Ortiz, 49, killed a cop and injured five others when he stormed the UPMC Memorial Hospital in York, Penn. on Saturday morning -- armed with a pistol and zipties -- in what ...
In their complete statement and recommendation to NHRC they have clearly expressed their concern: "White asbestos (chrysotile asbestos) is implicated in so many studies with the following diseases: Mesothelioma (cancer of pleura), Lung Cancer, Peritoneal Cancer, Asbestosis, and is also considered as a cause for Ovarian Cancer, Laryngeal Cancer ...