Additional high-grade near-surface copper occurrences confirmed
Australian copper explorer American West (ASX: AW1; OTCQB: AWMLF; FRA: R84) continues to systematically expand the footprint of its discovery of near-surface copper deposits at the Storm Project on Somerset Island, Nunavut. Recent results from short RC drilling on the Lightning Ridge target immediately between the two known zones 2750N and 2200N (see Figure 1) have confirmed additional high-grade near-surface copper occurrences that greatly expand the potential for direct-shipping ore (DSO) recovery. Drill hole SR23-52 at Lightning Ridge returned two mineralized intercepts: The first intercept returned 15.2m @ 2.3% Cu from 30.5m, including 1.5m @ 4.5% Cu from 32m, and 1.5m @ 4.5% Cu from 44.2m; a second intercept returned 15.2m @ 2.1% Cu from 77.7m, including 1.5m @ 7.6% Cu from 77.7m. The Lightning Ridge results highlight the excellent exploration and growth potential. The prospective structures on the adjacent Thunder and Lightning Ridge prospects can be traced for more than 10 km and remain largely untested by drilling.
American West geologists believe that the near-surface, high-grade copper deposits and the deeper sedimentary copper deposits were formed by the same fluids and mineralization processes. The regional potential of this copper system is enormous: To date, American West has succeeded in identifying high-grade copper deposits over an area of more than 15 square kilometers. In addition, there is more than 80 km of unexplored prospective stratigraphy, including gravity targets several kilometers long. In total, the exploration license covers 2,200 km².
The recently discovered Thunder and Lightning targets are geologically related to the 2200N and 2750 targets and form a 10 kilometer long structure (yellow) that remains largely untested. The high-grade 2200N zone is believed to have a similar formation history to the 2750N, 3500N, Thunder and Lightning Ridge copper zones. All of these copper deposits are structurally controlled and are located along the main faults of the major graben system, which is a major source of metal and fluids for mineralization.
More than 1,425m of drilling on the 2200N Zone has now confirmed continuity of mineralization over an east-west strike of 450m, indicating the potential for a significant volume of mineralization on this zone, which remains open in all directions.
Dave O’Neill, Managing Director of American West Metals, commented, “This year’s drill program continues to impress with high-grade, near-surface copper mineralization now confirmed in the Lightning Ridge Prospect and 2200N zones at the Storm Project. Assay results for Lightning Ridge have revealed new thick, high-grade copper zones that have the potential to add significant volumes of potentially economic near-surface mineralization at Storm. Our very first drilling at the 2200N Zone has also confirmed high copper grades and significant resource potential over 450m of known strike length. The 2200N Zone remains open at depth and laterally along the extensive fault network. The latest results are an excellent outcome as we continue to demonstrate the potential for camp-scale copper mining at the Storm Project.”
Further assay results for the 2023 drill program, including extension and resource definition drilling on the 4100N Zone, are expected in the coming weeks.
The bottom line is that the copper discoveries at American West’s Storm Project stand a good chance of one day becoming classroom material for future geology students. It is simply exemplary how systematically and knowledge-based the project is growing. It is now clear that the near-surface high-grade copper deposits at Storm, are related to the deeper sedimentary copper layers. A communicating system has formed along the main faults, providing an important source of metal and fluids for the near-surface mineralization. The trend of this structure can be excellently determined by electromagnetic (EM) measurements. Therefore, recent drilling successes suggest that deposits similar to 2,200, 2,750, Lightning, Thunder and 3,500N are very likely to be found along at least 10 kilometers. So the table is richly set for the next drilling season. Because of their common genesis, all of these near-surface copper discoveries are likely to have in common their high potential for direct shipments (DSO). American West is currently conducting extensive testing on this topic and expects to submit a study on the subject before the end of the year. The opportunity to combine significant open pit tonnages with low-cost processing and DSO make the Storm project stand out as one of 1,000 copper projects – not yet taking into account the additional potential of the sediment-bound copper horizon at depth. Meanwhile, the stock market is following its own laws. American West’s shares lost another 4 percent in Australian trading today, closing at A$0.12, with around 20 million shares traded. As recently as September 25, the share price had been A$0.25! Investors should pay no attention to the noise of the market and look to the substance at American West. It could be worth a future fortune.
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