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SOME OBSERVATIONS ON THE DISTRIBUTION OF TRACE METALS IN CHRYSOTILE ASBESTOS
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1973
Year
Materials ScienceIndustrial MineralRadioactive Tracer MethodsTrace Element GeochemistryEnvironmental MineralogyChrysotile AsbestosTrace MetalAccessory MineralsMineral ProcessingTrace Element
The distribution of iron, chromium, nickel, cobalt and scandium in a number of samples of chrysotile asbestos, including the standard reference samples prepared under the auspics of the International Union Against Cancer (UICC) was investigated. The composition of material separated magnetically from chrysotile was examined, using radioactive tracer methods. The solubility of thesc elements was measured by leaching samples of chrysotile in N hydrochloric acid at 25°C and compared with the solubility of the structural magnesium. These investigations show that all the metals considered can replace magnesium in the brucite layer of chrysotile. In addition, however, with the possible exception of scandium, they are also present in accessory minerals associated with the fibre.