South Orogrande Property

Idaho, U.S.A


  • Large land position covering a productive portion of the Orogrande Shear Zone.
  • Project less then 1km from Endomines AB’s Friday gold oxide deposit which hosts Measured + Indicated 20 MT @ 1.0 g/t Au, Inferred 21 MT @ 0.88 g/t (1.2 Moz Au total).1
  • Endomines AB recently announced the successful commissioning of their newly constructed Orogrande Processing Facility, which is expected to reach design capacity during the month of April, 2020.5
  • Project Hosts multiple kilometer-scale, cohesive gold in soil anomalies (2 x 4 km and 1.5 x 3 km) with coincident aeromagnetic, induced polarization, and DIGHEM geophysical anomalies in areas of minimal outcrop and widespread placer gold occurrences.2
  • Rock Chips 0 to 14.8 g/t Au, (N=15, avg. 1.5 g/t Au), coincident with soil anomaly.
  • EMX located five closely-spaced, less than 100 meter deep holes from the mid-1980s that were drilled within a small portion of one of the soil anomalies, with no record of any additional drilling across the Project area.

Project Details

  • Location: 22 km SW of Elk City, Idaho.
  • Access: Paved and gravel roads from Elk City.
  • Claims: 27.8km2. USFS unpatented lode claims.
  • Ownership: Option to earn 100%.
  • Infrastructure: Low power costs. Rail line 60 Km NW. 34 KV Transmission line onsite.
  • Permitting: USFS directive to permit early-stage drilling in under one year.

Vectors to Discovery

  • Soil Anomaly #1: 1 x 3.5 km historic soil anomaly.
  • Soil Anomaly #2: 2 x 4 km historic soil anomaly.
  • Regional shear structures associated with gold mineralization.
  • Multiple lode and placer gold occurrences on property.
  • Minimal outcrop (<5%): opportunity to discover overlooked mineralization.
  • Elk City District: 1 Moz historic gold production.3 Mines in active construction.


  • Host rocks: Cretaceous granodiorite, Mesoproterozoic biotite gneiss and minor schist; all excellent sources of iron for sulfidation and disseminated mineralization. Mineralized Eocene hypabyssal porphyritic dike swarms.
  • Structure: Within major mineralized zone of regionally important Orogrande shear zone.
  • Alteration: coarse muscovite alteration of metamorphic biotite, fine muscovite (sericite) alteration of feldspar, milky quartz goethite-jarosite-hematite veins, likely after quartz-pyrite ± arsenopyrite.
  • Geochemistry: Strong Au-Ag-As-Sb correlation in soils and rock chips.
  • Geophysics: Historic DIGHEM airborne electromagnetic and gradient-array induced polarization (IP) surveys identified conductive and chargeable zones for follow up.


  1. . Potential for large Au Bulk Tonnage oxide and/or sulfide gold deposit:
    • Nearby Friday deposit with Measured + Indicated 20 MT @ 1 g/t Au, Inferred 21 MT @ 0.88 g/t (1.2 Moz Au total).1
    • Disseminated mineralization in outcrop.
    • Undrilled soil anomalies, 2 x 4 km and 1.5 x 3 km.
    • Anomalous gold in rock chip, and placer gold in streams, over 10 Km.
    • Coincident DIGHEM conductivity and IP chargeability anomalies.
  1. Potential for Au in Orogenic Au-Quartz veins:
    • Historic drill intercepts near border with Endomines AB of 6.4m @ 5.5 g/t Au (true thickness unknown).4
    • Historic occurrences of gold-quartz veins mined underground throughout property position.3


1NI 43-101: Technical Report, Idaho Gold Project. Prepared by Geosim for Premium Exploration Inc. 4/8/13.

2The mineral resources reported for the Buffalo Gulch projects in Idaho, USA, are from Endomines Ore Reserve and Mineral Resource Estimate update April 9, 2019 are classified in accordance with standards defined by Canadian Institute of Mining, Metallurgy and Petroleum (“CIM”), “CIM Definition Standards – For Mineral Resources and Mineral Reserves”

3Greater Elk City District production, USGS: Koschmann and Bergendahl, 1968. Principal Gold-Producing Districts of the United States. Professional Paper 610.

4Premium Exploration Press Release, 9/10/2012.

5See Endomines news release dated April 2, 2020.


South Orogrande (X-Zone) Permitting Map

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South Orogrande (Monday Zone) Permitting Map

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Gold-in-soil Map (Satellite)

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Property EM (Satellite)

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Property IP (Satellite)

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Airborne Mag

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