The Biological Action of Talc and Other Silicate Minerals In 1973, Schepers published a written statement of his views on the carcinogenicity of talc, tremolite, chrysotile, and crocidolite.[11] Schepers’ paper, which was published in an Information Circular of the United States government, pronounced that the “[p]roliferation of pleural mesothelium is a classical sequel to crocidolite exposure which leads to neoplasis (mesothelioma) in a high proportion of cases. [read post]