Naturally occurring zeolites include forms whose biological activity is reported to range from highly pathogenic (erionite
) to essentially benign (mordenite).
Fluoresecence imaging of reactive oxygen metabolites generated in single macrophages cells (NR8363) upon phagocytosis of natural zeolite (erionite
In the case of pleural plaque, two additional fibers indicative of erionite
were also identified with an elemental composition including silicon, aluminum, sodium, and also a peak for calcium or potassium.
, albite, and stilbite-Na seem to be synthesized as a result of polycondensation.
Ortega, "High incidence of lung cancer and malignant mesothelioma linked to erionite
fibre exposure in a rural community in Central Mexico," Occupational and Environmental Medicine, vol.
exposure in North Dakota and Turkish villages with mesothelioma.
The best model for understanding asbestos-related fibrogenicity and mesothelial carcinogenicity is the very slow clearance of long, thin biopersistent fibers, of which commercial amphibole asbestos (amosite and crocidolite), erionite
, and refractory ceramic fibers are excellent examples, from respiratory compartments.
Epidemiological and environmental evidence of the health effects of exposure to erionite
fibres: A four-year study in the Cappadocian region of Turkey.
 Exposure to tremolite asbestos or fibrous zeolite (erionite
) in Southeast Turkey is well-documented.
Since then, another mineral fiber in the zeolite family called erionite
has been shown to be highly carcinogenic and causing pulmonary diseases similar to those seen with asbestos [10-12].
Other risk factors in some patients are radiation exposure talc erionite
or mica exposure and patients suffering from familial Mediterranean fever and diffuse lymphocytic lymphoma.
Thorium removal from aqueous solutions of Mexican erionite
and X zeolite, Journal of Radio analytical and Nuclear Chemistry, 260(1): 115.118 0236.