Mineralogical and Microstructural Features of Namibia Marbles: Insights about Tremolite Related to Natural Asbestos Occurrences
نویسندگان
چکیده
منابع مشابه
environmental implications related to natural asbestos occurrences in the ophiolites of the gimigliano-mount reventino unit (calabria, southern italy)
metabasites and serpentinites of the ophiolitic sequence of the gimigliano-mount reventino unit(calabria, southern italy), also known as greenstones, are employed and marketed for building and ornamentalpurposes since prehistorical times. the main topic of our research focuses on the occurrence, within the abovelithotypes, of asbestiform minerals that may be potentially harmful for human health...
متن کاملA review of carcinogenicity studies of asbestos and non-asbestos tremolite and other amphiboles.
Experimental animal studies comparing asbestos and non-asbestos varieties of tremolite indicate tremolite asbestos is markedly more carcinogenic. By direct analogy, the differences in carcinogenicity between tremolite asbestos and non-asbestos prismatic tremolite should be the same for the other types of amphibole that also crystallize in the asbestos and non-asbestos habits. The earliest of th...
متن کاملAsbestos (chrysotile, Amosite, Crocidolite, Tremolite, Actinolite, and Anthophyllite)
Asbestos is the generic commercial designation for a group of naturally occurring mineral silicate fibres of the serpentine and amphibole series. These include the serpentine mineral chrysotile (also known as ‘white asbestos’), and the five amphibole minerals – actinolite, amosite (also known as ‘brown asbestos’), anthophyllite, crocidolite (also known as ‘blue asbestos’), and tremolite (IARC, ...
متن کاملChronic effects of dietary exposure to amosite asbestos and tremolite in F344 rats.
Carcinogenesis bioassays of blocky (nonfibrous) tremolite and amosite asbestos alone or in combination with the intestinal carcinogen 1,2-dimethylhydrazine dihydrochloride (DMH) were conducted with male and female Fischer 344 rats. The minerals were administered at a concentration of 1% in pelleted diet for the entire lifetime of the rats starting with the dams of the test animals. One group of...
متن کاملComparison of Calidria chrysotile asbestos to pure tremolite: inhalation biopersistence and histopathology following short-term exposure.
The differences between chrysotile asbestos, a serpentine mineral, and amphibole asbestos have been debated extensively. Many studies have shown that chrysotile is cleared from the lung more rapidly than amphibole. In order to quantify the comparative clearance of chrysotile and the amphibole asbestos tremolite, both fibers were evaluated in an inhalation biopersistence study that followed the ...
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ژورنال
عنوان ژورنال: Fibers
سال: 2019
ISSN: 2079-6439
DOI: 10.3390/fib7040031