Definition of "erionite" [erionite]

• A zeolite mineral with a molecular structure similar to chabazite, usually found in weathered volcanic ash. (noun)

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• "Recent findings have shown that a mineral called erionite has been known to cause genetically pre-dispositioned individuals to have malignant mesothelioma rates much higher than those not pre-dispositioned genetically."
• "High exposure to a fibrous volcanic mineral called erionite was associated with a high incidence of a type of cancer called mesothelioma, according to a study in the March 15 issue of the"
• "The EPA says erionite is found in at least a dozen states in the West, but not at the levels in western North Dakota, where it's used on many rural roads."