Superior West, Arizona

Superior West is a porphyry copper project about two kilometers west of the Resolution deposit in the Superior District of southern Arizona. Recognition of the crustal tilting and mineral and metal zoning patterns of the historic Magma Mine, together with advanced argillic alteration, suggests a porphyry source under post-mineral cover rocks on EMX’s property. 

EMX executed an Option Purchase Agreement with Kennecott Exploration Company (“Kennecott”), part of the Rio Tinto Group, to acquire 100% interest in the project, after which EMX will retain a 2% NSR royalty. To earn-in, Kennecott must complete escalating exploration expenditures totaling US$5.5M and make annual option payments totaling ~US$1M by the 5th anniversary. After earn-in Kennecott will make  escalating advance minimum royalty and project milestone payments. See EMX news release dated May 4, 2015 for more information. 

*Nearby mines and deposits provide context for the project, but do not necessarily indicate similar size, styles or grade of mineralization within the project.


Geology and targets at Superior West Click to Enlarge
Cross section of Superior West Click to Enlarge