The Target 4 (Main Grid) occurrence is located above Cave Creek on the southwestern slope of Mount Barrington.
The Target 4 area is underlain by sedimentary rocks and minor volcanic rocks from the Upper Triassic Stuhini Group. The zone is located near the southwestern end of the Limpoke pluton (Texas Creek Plutonic Suite), a two-phase stock with a biotite hornblende quartz monzonite outer phase and medium-grained hornblende monozodiorite inner phase. Leucocratic potassium feldspar megacrystic syenite dikes intrude the eastern and western borders of the pluton and surrounding Upper Triassic Stuhini Group sedimentary and volcanic rocks.
Locally, gold mineralization occurs in calcite veins hosted by shear zones in sedimentary rocks. Vein widths are generally restricted to less than one metre but do swell to greater than two metres in isolated areas. Samples were pyrite and arsenopyrite bearing.
Work History
The area was originally explored by Teck Explorations and Dupont in the early 1980’s, with work centering on the Tuff and New Limpoke occurrences (MINFILE 104G 121 and 104G 024). Between 1988 and1992, Integrated Resources explored the area as the Goat and IR claims and completed programs of geochemical sampling, geophysical surveys, geological mapping. In 1989 grab sampling returned values up to 41.5 grams per tonne gold with 395 parts per million copper across 0.1 metre and 32.9 grams per tonne gold, 16.4 grams per tonne silver with 0.19 per cent copper and greater than 1 per cent arsenic across 1.0 metre (Assessment Report 19439). In 2002, Newcastle Resources and Viceroy Resources staked the area as a part of the Target 1-4 claims and completed a prospecting program.
See Ridge (104G 024) and West (104G 210) for detailed work history information on the Target 4 area and for 2017 ASTER results.
In 2019 and 2020, Libero Copper and Gold Corp. completed programs of geological mapping; geochemical (rock, soil and talus fines) sampling; a 549 line-kilometre airborne electromagnetic (ZTEM) survey; three diamond drill holes, totalling 610.0 metres, and 24 reverse-circulation drill holes, totalling 3527.5 metres, on the area as the Big Red property.
