Robber Gulch Property

Idaho, U.S.A.


  • Large land position in an underexplored district north of Nevada’s Carlin Trend.
  • Shallow, heap-leachable oxide gold targets < 250 m deep along >2 Km strike length.
  • Straightforward permitting on BLM claims.
  • Structural complexity and multiple generations of normal faults: multiple targets.
  • Alteration exposed in erosional window and extends beneath volcanic cover.
  • Historic drill intercepts: AC-4: 18.3m of 0.23 g/t Au and 24.4m of 0.56 g/t Au including 6.1m of 1.25 g/t Au in oxide, true thicknesses of intercept unknown.2
  • Same host rocks as Liberty Gold’s Black Pine.1

Project Details

  • Location: 30 km SW of Burley, Idaho, with lodging, food, and Interstate 90.
  • Access: Paved and gravel roads from Burley. Maintained drill roads onsite.
  • Claims: 3.4 km2. Dominantly BLM land. Minor USFS unpatented lode claims.
  • Ownership: Option to earn 100%.
  • Infrastructure: Low power costs. Rail line 30 km NE. 34 KV transmission line 1 km NE.
  • Permitting: BLM. Notice of intent drill permits in 30 days.


  • Host rocks: Penn-Permian Oquirrh Formation (various local members) silty limestone, calcareous sandstone. Exposed in erosional window through post-mineral volcanics.
  • Structure: N-S striking, steeply W-dipping faults are primary fluid conduits. Bedding serves as secondary fluid pathways. Previous work focused on NW striking structures, now understood as post-mineral.
  • Alteration: Jasperoid and minor decalcification in silty limestone. Silicification and qtz-goethite veining in calcareous sandstone.
  • Geochemistry: Au-Ag-As-Sb correlation in rock chips.


The primary targets at Robber Gulch are surface-mineable, oxide Carlin-style gold mineralization associated with intense jasperoid, decalcified limestone, and local quartz veining and brecciation within sandstone and carbonate units.

  • Heap-leachable oxide gold at target depths < 250 m.
  • Same host stratigraphy as Black Pine mine, Oquirrh Formation.1
  • Mineralized fluid conduits extend under post-mineral cover.
  • Minimal outcrop, no previous soil geochemistry.
  • Widespread alteration and anomalous Au-Ag-As-Sb-Hg in rock chips.
  • Follow up of historic drill intercepts.


1Black Pine Mine 43-101 Technical Report on the Black Pine Gold Project, Cassia County, Idaho. Prepared by MDA for Liberty Gold Corp. 9/7/2018. Historic production: pg. 27. Accessed on SEDAR August 28, 2019

2Internal Report on Artesian City Project, Cassia County, Idaho. 1986. Exvenco Resources Inc.


Robber Gulch Property Map

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Robber Gulch 2020 Au-In-Soil Results

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