Asbestos Content of Talcs from Italian Mines and Fibre Concentration in Various Commercial Talcum Powders Used in Italy

  • A. Marconi
  • U. Verdel
Conference paper
Part of the NATO ASI Series book series (volume 21)


Talc naturally occurswith a variety of mineral habits: blocky, platy, polycristalline and fibrous. Due to the geological origin, metamorphic alterations of quartzite and dolomitic rocks, talc deposits have been found to contain talc mineral often in association with other minerals like serpentine and amphiboles Health interest in the occurrence of the asbestiform varieties of these minerals is determined by the cancerogenic potential associated to the inhalation of asbestos fibres.


Italian Minis Mineral Fibre Chrysotile Fibre Asbestos Fibre Amphibole Mineral 
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  1. Campbell W.J., Steel E.B., Virta R.L., Eisner M.H. (1979). Relation ship of mineral habit to size characteristics for tremolite cleavage fragments and fibres. Bureau of Mines-Report of Investigations No.8367, United States Dept. of the Inte -rior.Google Scholar
  2. Marconi A., Maccione M., Rossi L. (1986). Asbesto e talco: de terminazione del contenuto di particelle minerali fibrose in polveri di talco commerciali mediante tecniche associate di mi croscopia ottica. Med.Lay. 77 (5), 496–510 (in italian).Google Scholar
  3. Marconi A., Puledda S. (1987). Analisi differenziata delle va rie forme di asbesto presenti in alcuni prodotti commerciali con le tecniche integrate della diffrattometria a raggi X e della microscopia ottica in contrasto di fase. G.Igienisti Ind. 12 (4), 9–19 (in italian).Google Scholar
  4. Pang T.W.S., Schonfeld F.A., Nazar M.A. (1987). The determina tion of tremolite asbestos in talc powder samples. Ann. Occup. Hyg. 31 (2), 219–225.CrossRefGoogle Scholar
  5. Roskill Information Serv,hes Ltd. (1987). The economics of talc and pyrophyllite, 9 Ed., London.Google Scholar
  6. Soc.Talco e Grafite Valchisone (1989) (Personal Communication).Google Scholar
  7. Stemple I.S. Brindley G.W. (1960). A structural study of talc and talc tremolite relations. J.Am.Ceramic Soc. 43 (1), 35–42.Google Scholar
  8. Virta R.L. (1985). The phase relationship of talc and amphibo les in a fibrous talc sample. Bureau of Mines Report of Investigations No.8923. United States Dept. of the Interior.Google Scholar
  9. Verdel U., Sperduto B., Ricchiardi P., Laurini G. (1985). Ca- ratteristiche dei talchi italiani e possibilità di associazio ni con minerali nocivi. Ind. Mineraria 2, 25–33 (in italian).Google Scholar

Copyright information

© Springer-Verlag Berlin Heidelberg 1990

Authors and Affiliations

  • A. Marconi
    • 1
  • U. Verdel
    • 2
  1. 1.Lab.Igiene AmbientaleIstituto Superiore di SanitàRomeItaly
  2. 2.Consulenza Tecnica Accertamento Rischi ProfessionaliINAILRomeItaly

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