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Alderan Resources Limited (ASX: AL8) (Alderan or the Company) is pleased to advise that its Stage 1 drilling programme at the New Years copper prospect in the Cactus copper-gold (Cu-Au) district in Utah, USA has intersected high grade copper mineralisation based on visual inspection and pXRF readings on the drill core. Spot pXRF readings reach grades of 45.5% copper between 14.0-14.2m down hole NY2024-DDH2 with the average of three separate readings over this interval being 23.2% copper (see Figure 2). This sits within a 30m interval from 10.8m downhole which contains high pXRF copper grades (see Appendix 3).
HIGHLIGHTS
- Two holes intersected high grade copper mineralisation in Alderan’s Stage 1 drilling programme at New Years copper prospect in the Cactus copper-gold district, Utah.
- Hole NY2024-DDH2 intersected copper mineralisation from 10-40m down hole with averaged pXRF drill core assay intervals up to 23.2% copper. A second 2m zone of mineralisation at 72m downhole has spot pXRF grades up to 28.0% copper.
- Hole NY2024-DDH3 has intersected visible oxide copper mineralisation from surface to a depth of 99m downhole – pXRF assaying in progress.
- Copper mineralisation occurs in tourmaline breccia, the same rock that hosts the neighbouring historical Cactus copper-gold deposit which mined 2.0% copper ore.
- The preliminary logging and pXRF readings suggest that the drill holes may have significantly extended the mineralised zones reported in historical holes NY-6 and NY-2 which intersected 13.7m @ 2.32% Cu within 19.8m @ 1.67% Cu from 22.9m downhole and 10.7m @ 1.52% Cu within 27.4m @ 0.85% Cu from surface respectively.
- Alderan is now completing permitting for a follow-up drilling programme at New Years.
Figure 1: High grade copper mineralisation in tourmaline breccia which contains pXRF grades up to 45.5% copper within the interval 14-16m down hole NY2024-DDH2
Cautionary Note: Visual estimates and pXRF readings described in this release and detailed in Appendix 3 should not be considered a proxy or substitute for laboratory analyses. Laboratory assays are required to determine representative grades and mineralisation intervals reported from geological logging and pXRF readings. Visual estimates also potentially provide no information regarding impurities or deleterious physical properties relevant to valuations. Drill core from this programme is being sampled for laboratory analysis at ALS laboratories and results will be reported as soon as they become available.
The Stage 1 drilling at New Years is a three hole (319m) programme aimed at verifying copper mineralisation intersected in historical holes drilled in 1964 and 2002 plus identifying geological controls on mineralisation.1 Stage 2 drilling, which will be dependent on the final Stage 1 results, will focus on extending the mineralisation intersected in Stage 1 and testing geophysical targets. Sampling for lab analysis and detailed geological logging of the holes is still in progress and final design of Stage 2 drill sites is underway. Archaeological inspections required for permitting the proposed Stage 2 drill sites is also underway.
Figure 2: NY2024-DDH2 drill core at 14.0-14.2m downhole. The pXRF copper grade over 3 readings averages 23.2%.
Managing Director of Alderan, Scott Caithness, commented:
“The visual estimates and pXRF spot readings on the core from the second and third holes drilled in the New Years programme are very exciting with both indicating that near surface potentially high grades of copper mineralisation have been intersected. There is also clear evidence that copper rich sulphide mineralisation occurs deeper in the breccia pipe.
“The 30m copper mineralised intersection in Alderan’s hole NY2024-DDH2 from 10m downhole appears to broadly correlate and extend the historical hole NY-6 intersection which was 13.7m @ 2.32% Cu within 19.8m @ 1.67% Cu from 22.9m downhole. Although pXRF assays are not yet available, based on visuals hole NY2024-DDH3 appears to have intersected copper mineralisation to a depth of around 99m from surface – much deeper than historical hole NY-2.
“The Stage 1 drilling programme has been completed with detailed geological logging of the core and sampling for lab analysis now underway. Work has also commenced on final design and permitting for follow-up drilling”
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Geophysics Reveal Further Highly Prospective Targets at Mt Oxide Project
HIGHLIGHTS
- Three MIMDAS Induced Polarisation (IP) and Magnetotelluric (MT) lines at the historic Mt Gordon Copper Mine and Aquila prospect have revealed multiple unexplored geophysical targets with similar signatures to the Vero Cu-Ag-Co resource at Mt Oxide.
- Mt Gordon – Three new shallow and untested anomalies, similar to the Vero resource, have been identified and are partially coincident with historic drilling intersections, including 1.9m @ 3.0% Cu from 106m downhole in ECM11.
- Aquila –Chargeability highs of 15mV/V from two MIMDAS lines spaced 85m apart are coincident with mapped iron oxide-rich breccias which returned up to 0.94% Cu in rock chip samples2.
- A 20m wide, shallow highly chargeable anomaly associated with a 150m long trend of fault breccias with anomalous Cu +/- Ag-As-Bi and no previous drilling.
- A 20m wide and up to 25m deep +25mV/V chargeability and <250ohm.m conductivity anomaly, un-drill tested and correlating with a Dorman trending structure 80m below surface.
- Next Steps
- The geophysical survey is nearing completion with processing pending on Ivena North and an additional line being undertaken at Camp Gossans to test the strike extent of the anomaly at Camp Gossans and the new Black Marlin target3.
- True North Copper’s Exploration team are currently sampling recently identified mineralised structures at Aquila, Rhea and Black Marlin.
- The new geophysics will be integrated with ongoing mapping and surface geochemical sampling campaigns to identify and prioritise targets for future drill campaigns.
- Heritage clearance and access planning for drilling has commenced.
COMMENT
True North Copper’s Managing Director, Bevan Jones said:
“Our geophysical survey at Mt Oxide has revealed several new, highly prospective targets that share similar characteristics with our high-grade Vero deposit. The results of this survey, which has been supported by a Queensland Government CEI Grant, have uncovered significant anomalies at both the historic Mt Gordon Copper Mine and Aquila prospect. These results are in addition to the positive results at Vero and Camp Gossans announced in August. With these exciting developments, we’re optimistic about expanding our exploration footprint and identifying additional drill targets. The continued integration of geophysics, mapping, and sampling will be key to advancing our future exploration programs at Mt Oxide, including the design of the next phase of drilling.”
Figure 1. Location of the Mt Oxide Project, within context of Mt Isa Inlier.
Mt Oxide MIMDAS Survey Results Summary
In July 2024, TNC announced it had commenced its leading edge MIMDAS Induced Polarisation (IP), Resistivity and Magnetotellurics (MT) geophysical survey (MIMDAS survey) at Mt Oxide4. Partial funding of $300k was granted to TNC in Round 8 of the Collaborative Exploration Initiative (CEI) to undertake the survey (Figure 6).
The MIMDAS survey has aimed to identify potential sulphide mineralisation developed below numerous leached gossan zones and build an improved understanding of the regional scale structural and geological architecture. Two previously reported lines identified chargeability anomalies correlating with mineralisation in the Vero resource and a series of untested anomalies including a chargeability anomaly 1km east of Vero, and two chargeability high responses at Camp Gossans3 beneath outcropping breccias with similar surface geochemical signatures to the Esperanza Deposit5. The coincidence of anomalies directly associated with the Vero resource highlights the applicability of MIMDAS to target copper-silver mineralisation within the Mt Oxide District.
Three additional lines have recently been completed, including two lines 85m apart for 2.3 line-kms over the highly prospective Aquila prospect and one line for 1.5 line-kms over the historic Mt Gordon Copper Mine (Figure 2).
At Aquila, the survey has identified two (2) chargeability responses in the Mount Gordon Fault Zone and the Dorman fault trend, and one conductivity response below a geochemically anomalous fault breccia.
At Mt Gordon, the survey has identified four (4) chargeability responses in the Mount Gordon Fault Zone and in resistive sandstone over a 600m wide chargeability trend.
The geophysical survey is nearing completion with processing pending on Ivena North and an additional line at Camp Gossans, 150m northeast of the line completed in August that returned a very high-order chargeability anomaly coincident with mapped Gossans and defined the new Black Marlin Target3.
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This article includes content from True North Copper, licensed for the purpose of publishing on Investing News Australia. This article does not constitute financial product advice. It is your responsibility to perform proper due diligence before acting upon any information provided here. Please refer to our full disclaimer here.
