Foit, Franklin F. Compositional variation in mercurian Tetrahedrite-Tennantite from the epithermal deposits of the steens and Pueblo Mountains, Harney County, Oregon - Toronto, ON Mineralogical Association of Canada June 2001 - pp. 819-830 ilus., tbls. ISSN: 0008-4476 Subjects--Topical Terms: MERCURIOMICROSONDA ELECTRONICATETRAEDRITAYACIMIENTOS EPITERMALES Subjects--Geographic Terms: ESTADOS UNIDOSOREGON