Mohave Copper-Molybdenum-Silver Porphyry Project

Figure 1: Mohave Copper-Molybdenum-
Silver Porphyry Property


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In May of 2019 Dunnedin acquired 100% of the Mohave copper-molybdenum-silver porphyry project in Mohave County, Arizona, USA. The project highlights include:

  • Porphyry project with sizable footprint located in the prolific mineral producing Basin and Range Province of Arizona
  • 10.4 km2 land package, road-accessible and adjacent to Highway 93 which links Las Vegas and Phoenix
  • Geologically and structurally analogous to the Bagdad mine and typified by structures associated with the Lariamide extensional event, like those preferentially mineralized at Bagdad
  • 3,500 metres drilled in 2011, extensive ground work by previous operators with some historic mining

 

Project Summary

  • Magnetics define a sizable ring or donut-type feature characteristic of copper porphyry deposits
  • Extensive rock and soil mineralization over a large area of the project with a coincident Induced Polarization (IP) geophysical anomaly (2.5 km x 2.5 km)
  • Circular Cu-Mo-Ag soil geochemical and geophysical anomalies are not fully tested by drilling
  • Geological, geochemical and geophysical surveys indicate that Mohave is part of an extensive sulphide-bearing hydrothermal system
  • Mineralization at Mohave is dominated by potassic alteration having multiple and complex Cu-Mo-Ag events with younger Mo-Ag and Pb-Zn-Ag overprints
  • Two small scale historic mines operated on the Mohave property in the 1950’s and 1960’s: the Wikieup Queen copper oxide mine and the Scott Fault molybdenum-lead-silver mine

 

Figure 2: Mohave Historical Drill Holes

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In the late 1960’s and early 1970’s explorers identified Cu-Mo-Ag porphyry mineralization in several shallow churn holes to depths ranging from 30.5 m to 152.4 m. In 2011, eleven wide-spaced core holes totaling 3,500 m were drilled. Highlights of historical drill results at Mohave are shown in Figure 2 and include:

  • 59.4 m grading 0.49% Cu
  • 65.8 m grading 0.2% Cu, 0.011% Mo, and 2.35 g/mt Ag
  • 70.7 m grading 0.3% Cu, 0.01% Mo, and 2.54 g/mt Ag
  • A surface trench returned 50.3 m grading 0.24% Cu and 0.076% Mo

 

Jeff Ward, P.Geo, and VP Exploration of the Company is a “Qualified Person” as defined under NI 43-101 has reviewed and approved the technical content of this web page.

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