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Distribution of Fibrous Erionite in the United States and Implications For Human Health Fibrous erionite, a zeolite mineral, has been designated as a human carcinogen by the World Health Organization and is believed to be the cause of extraordinarily high rates of malignant mesothelioma and other asbestos - related diseases in several villages in Central Turkey. A recent study by the University of Hawaii in collaboration with the U. S. Environmental Protection Agency in Dunn County, North Dakota has demonstrated similar human exposures to fibrous erionite as those in found in Turkey. The source of these exposures is an erionite - bearing volcanic tuff that has been mined, crushed, and used to gravel hundreds of miles of roads. While elevated rates of mesothelioma are not yet apparent in North Dakota,... Categories: Data, Project; Types: Downloadable, GeoTIFF, Map Service, Raster; Tags: All Working Groups, Completed, Ecosystems, Energy and Minerals, Human Health, All tags... erionite, Fewer tags