from Wiktionary, Creative Commons Attribution/Share-Alike License

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

from The Century Dictionary and Cyclopedia

  • n. A hydrated silicate of aluminium, calcium, sodium, and potassium, occurring in aggregates of wool-like fibers in cavities in a rhyolite tuff: found at Durkee, Oregon.


Sorry, no etymologies found.


  • 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. News

  • The state's top rock researcher and the state's chief fossil finder have signed up to find out if they've been harmed by long-term exposure to erionite, which can collect in the lungs of people who breathe it. News

  • The EPA says U.S. studies also have shown that erionite causes cancer in lab rats, though the mineral is not regulated by the agency.

    Times Leader News

  • State Rep. Shirley Meyer of Dickinson believes the fears over erionite are overblown.

    Times Leader News

  • She said she hoped the tests would halt the fears that have led Killdeer's Dunn County to stop using free erionite gravel until the study is complete. News

  • But not many others are biting in a part of the state where many of the roads are covered with erionite gravel mined from the nearby Killdeer Mountains. News

  • State geologist Ed Murphy notified the EPA of the erionite in the region about three years ago, after he found that in Turkey, the mineral was linked to mesothelioma, an incurable form of lung cancer.

    Times Leader News

  • In order for the study to be statistically accurate, at least 50 individuals who were exposed to erionite need to be tested.



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