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Abstract
Twelve dusting powder tale which procede from pharmacies and drugstoresm have been studied by mineralogical analysis of X-Ray diffraction. The result obtained with this technique is very suggestive. In these samples the phase-constituent most abundant is the tale, although Quartz, Chlorite, Amphibole, Dolomite, Calcite, Kaolinite, Zincite and Sassolite are found too. Zincite and sassolite are additives added for the maker laboratory, the rest of the phases detected are mineral impurities. The presence of these impurities suggests that the dusting-powder tale haven't been purifield. Possibly sorne of these mineral impurities, are noxious for the topical use.
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