Oasis Project
- 100% Redstar-owned claims in southwestern Nevada acquired in 2007
- 26 miles southwest of the Goldfield mining district (4 million ounces of gold produced)
- Unique porphyry gold system within the Walker Lane Province of western Nevada
- Widespread low-grade disseminated gold mineralization; surface gold to 6.3 g/t; the surface and subsurface gold zone system at +0.1 g/t is at least 1km by 0.8km
- System is centered on a multi-phase intrusive complex cutting Lower Paleozoic basement sedimentary rocks and overlying Tertiary andesitic volcanics which may be the same age as the host andesite in the Goldfield district; mineralization is hosted in all three units
- Mineralization is coincident with potassic alteration, notably hydrothermal biotite, and sheeted A-type quartz veinlets
- Gold correlates with copper, molybdenum, tin and potassium
- Exposed and drilled portions of the system appears to represent the outer portions of a large porphyry Au-Cu system:
- Strong phyllic overprint to potassic alteration
- Surface and near-surface mineralization coincident with elevated Mo and Zn
- Increasing copper with depth
- Overlying barren advanced-argillic (silica-alunite) cap exposed
- Highlights of drilling completed in 2010 and 2011 by Centerra Gold (U.S.):
- Hole 14: 96.lm of 0.26 g/t including 12.2m of 0.40 g/t
- Hole 15: 7.6m of 0.80 g/t and 10.7m of 0.63 g/t
- Hole 10: 13.7m of 0.49 g/t including 3.0m of 1.06 g/t
- Hole 24: 169.2m of 0.22 g/t
- Hole 26: 30.5m of 0.40 g/t including 10.7m of 0.91 g/t
- Drilling results show copper increasing with depth within the gold mineralization. However, the deepest drilling has tested to only 365m (1,200 feet) below surface, and many of the 2011 holes failed to reach targeted depths. The gold system remains open at depth and to the south and west, and Redstar believes there is potential for a significant porphyry Au-Cu deposit.
Related Items
