MAPS SHOWING PLATINUMGROUP ELEMENT
MAPS SHOWING PLATINUMGROUP ELEMENT OCCURRENCES IN THE CONTERMINOUS UNITED STATES UPDATED AS OF 1993 Pacific coast of Oregon and Washington Total PGE production for California has been estimated at about 30000 oz Sjoberg and Gomes 1981 and for Oregon at found in mafic to ultramafic zoned or layered plutons where