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The many causes of mesothelioma
Published in Dorsett D. Smith, The Health Effects of Asbestos, 2015
Antigorite, a different type of serpentine mineral, has been implicated in the causation of mesothelioma in New Caledonia. Antigorite can exhibit a fibrous morphology. (Baumann F, Maurizot P, Mangeas M et al. Pleural mesothelioma in New Caledonia: Associations with environmental risk factors. Environ Health Perspect 2011;119:695–700.) Antigorite and chrysotile asbestos fibers are released in serpentine quarries and stone-processing facilities, but the level of exposure usually remains below the permissible exposure limit. (Cattaneo A, Somiglianna A, Gemmi M et al. Airborne concentrations of chrysotile asbestos in serpentine quarries and stone processing facilities in Valmalenco, Italy. Ann Occup Hyg 2012;56:671–83.) Mining other types of nonasbestiform minerals, such as nephite or jade in Taiwan, can be associated with pulmonary fibrosis from exposure to nonasbestiform tremolite asbestos. (Yang HY, Shie RH, Chen PC. Pulmonary fibrosis in workers exposed to non-asbestiform tremolite asbestos minerals. Epidemiology 2013;24:143–9.)
Asbestiform minerals in ophiolitic rocks of Calabria (southern Italy)
Published in International Journal of Environmental Health Research, 2018
Antonella Campopiano, Angelo Olori, Alessandra Spadafora, Maria Rosaria Bruno, Federica Angelosanto, Antonino Iannò, Stefano Casciardi, Renato Giardino, Maurizio Conte, Teresa Oranges, Sergio Iavicoli
The results will be useful for Italian NOA deposit mapping in order to avoid an unintentional exposition. Most natural exposures are derived from natural agents and activities of man as building roads, excavation activities or agriculture activities. Fibers in the disturbed NOA could be dispersed into air and appropriate health and safety measures should be planned and followed. To note that in general NOA is the term applied to the natural geologic occurrence of any of the six types of asbestos minerals (chrysotile, crocidolite, amosite, tremolite, actinolite, anthophyllite) (Nichols et al. 2002). But other asbestiform minerals crystallize in the fibrous habit and may occur in the same geological settings as the more common asbestos minerals. For example, carlosturanite and balangeroite occur in some serpentines (e.g. Compagnoni et al. 1985; Groppo et al. 2005). In Calabria, our results indicated an important presence of antigorite with asbestiform habit. Fibrous antigorite was already detected in the literature (Groppo and Compagnoni 2007; Keeling et al. 2008; Fitz Gerald et al. 2010) and the few toxicological studies (Stanton et al. 1981; Wozniak et al. 1988; Bernstein et al. 2005) are not sufficient enough to understand if the mineral could pose a health risk similar to that the regulated asbestos minerals.
Shallow reworking of magmatic zircon grains of latest Neoproterozoic (Timanian) age in serpentinite of the Voykar Massif, Polar Urals: new constraints from U-Pb isotopic data, and first trace elements and Lu-Hf isotopic data
Published in GFF, 2019
Nikola Koglin, Solveig Estrada, Axel Gerdes
Antigorite is the serpentine mineral that is stable under high-pressure and high-temperature (c. 300–600°C) conditions and thus appears in subduction environments (e.g., Evans 2004; Deschamps et al. 2013, and references therein). Antigorite also forms by high-temperature hydrothermal alteration of mantle peridotite at or near mid-ocean ridges (Klein et al. 2017). In the Voykar Massif, olivine-antigorite rocks have a wide extent within the ultramafic complex (Savelieva et al. 2007; Batanova et al. 2011).