Ripsey West, Arizona

Ripsey West is a porphyry copper project in the heart of the Laramide porphyry belt. The project is located 23 km south of Ray and 40 km north of San Manuel. Significant historic exploration has been conducted in the area, but these efforts underestimated the magnitude of post-mineral Tertiary extension and dismemberment of the Laramide porphyry system(s). 

Four sets of superimposed down to the east normal faults have dismembered and tilted the Laramide-aged porphyry system 90° to the east. This new structural modelling by EMX identifies a covered target untested by multiple previous exploration campaigns.

The primary target is a dismembered porphyry copper system concealed beneath post-mineral cover, with a potential for supergene enrichment of the primary hypogene mineralization.

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


Geologic map showing Laramide-aged dikes intruding Proterozoic granite and diabase. Previous exploration did not test covered target identified by new structural model for post-mineral extension Click to Enlarge
Geological cross section of Rispey West showing target area. Click to Enlarge


Box work after sulfide in QSP Vein Click to Enlarge
Cu oxide near historic workings exposed in the area of previous exploration Click to Enlarge