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Location: 22 Km SW from Battle Mountain, Nevada, United States
1/1 Tully RoadPerthWestern Australia, Australia6004
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The Independence project lies in the Battle Mountain Mining District located on the west side of Pumpernickel Ridge in north central Nevada. The regional geology of north central Nevada is defined by episodic tensional deformation, rifting, sedimentation and erosion, followed by widespread thrusting resulting from compressional deformation.Episodic tensional events followed by compressional events include the Robert Mountains Allochthon emplaced during the Antler orogeny.The Antler sequence hosts the Golconda Allochthon that was emplaced during the Sonoma orogeny and contains the Havallah Sequence of Mississippian to Permian age rocks, including the Pumpernickel Formation, host to near surface mineralisation at the Independence Project.Rocks of the Roberts Mountain Allochthon hosted the adjacent Fortitude deposit and are the principal host for the Phoenix deposit and the Independence Project Skarn Target. These rocks are structurally overlain by the Mississippian, Pennsylvanian, and Permian Havallah sequence of the Golconda allochthon.The near surface mineralisation at Independence is best characterised as a high-level epithermal system formed as a leakage halo above the Independence gold skarn, both related to emplacement of Eocene age granodiorite porphyry’s and related faults. The shallow oxide chert-hosted gold-silver mineralisation consists of iron oxides and clays derived from primary sulphide stockworks and replacements, deeply weathered and oxidised.The Independence gold skarn target is a high-grade, gold-rich skarn system developed in the carbonate rich portions of the Battle Mountain, Antler Peak and Edna Mountain Formations in the lower portion of the Roberts Mountain Allochthon.DimensionsThe surface hosted chert mineralisation broadly strikes North-South, and dips generally 55-65° to the west, with local variations. There is a shallow overall plunge to the south (~5°). The current extent is approximately the length of the tenement, 1,545m strike, with a plan width influence of 450-470m in the central and north, thinning in the south to ~150m. The mineralisation extends from surface to ~340m below and is modelled as stacked lenses from 1.5-40m thickness. The deep skarn mineralisation has been outlined by three sub horizontal lenses from 1.5 – 13m thickness, from about 700 to 900m below surface and with a 20-30 degree dip to the south-southwest.
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