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Lomitas Negras, Arizona

The Lomitas Negras property is ringed by Laramide-age intrusive rocks and porphyry copper/skarn deposits that include San Manuel-Kalamazoo (~20 kilometers north), Copper Creek (~25 kilometers northeast), and Oracle Ridge (~10 kilometers southwest).  Nearby outcrops exhibit alteration and anomalous base metal mineralization that characteristically occurs on the margins of porphyry copper systems. EMX’s recognition of the altered outcrops, combined with a new interpretation of the extensional structural setting of the area, led to the identification of concealed porphyry copper targets beneath the post-mineralization pediment cover at Lomitas Negras.   

Note: The nearby mines and deposits in the region provide context for EMX’s Project, which occurs in a similar geologic setting, but this is not necessarily indicative that the project hosts similar mineralization.

Maps

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Photos

Mineralization in the altered Escabrosa limestone on the Lomitas Negras project. Clockwise from upper left: Cu-oxide and wulfenite (Mo); galena and wulfenite; chalcocite, wulfenite and Cu-oxide. Click to Enlarge