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Star Minerals Limited (ASX: SMS, “the Company” or “Star Minerals”) is pleased to advise results are now available for a rock chip campaign completed in late 2023 at the West Bryah Project. Samples were collected during a reconnaissance trip by experienced SMS geologists. The aim was to evaluate the Project for prospectivity for gold deposits similar to that defined by Metal Bank (ASX:MBK) at the Livingstone Project, 30km west of the Dimble and Mount Padbury Prospects. Potential for pegmatite hosted lithium mineralisation within the Yarlarweelor Gneiss was reviewed as part of the trip, with evaluation of geology exposure.
HIGHLIGHTS
- Results for 19 Rock Chips at West Bryah Project support Historical Exploration Results at Mount Padbury Prospect and potential of Dimble Prospects.
- Best Rock Chip results include:
- 30.2 g/t Au and 2.1% Cu in sample SMRK055 from Dimble East.
- 12.7 g/t Au in sample SMRK062 from Mount Padbury.
- 11.1 g/t Au in sample SMRK061 and 6.83 g/t Au in sample SMRK059 from West Dimble 4.
- 7.97 g/t Au in sample SMRK070 from Dimble West.
- Mount Padbury reconnaissance checks historical drilling by Lachlan Resources in 19971 that returned multiple significant gold intercepts in RAB and RC drilling, including down hole intercepts of:
- 12m at 5.66 g/t Au from 0m in RAB hole MPRB015, including 1m at 59.1 g/t Au from 7m;
- 19m at 2.68 g/t Au from 0m in RAB hole MPRB001, including 1m at 6.14 g/t Au from 4m and including 2m at 17.0 g/t Au from 8m;
- 9m at 1.35 g/t Au from 22m in RAB hole MPRB014;
- 4m at 2.69 g/t Au from 35m in RC hole MPRC0002, including 1m at 7.43 g/t Au from 35m;
- 2m at 2.42 g/t Au from 11m and 1m at 1.16 g/t Au from 20m in RC hole MPRC0004;
- 3m at 1.66 g/t Au from 5m in RC hole MPRC0007; and
- 1m at 8.04 g/t Au from 27m in hole MPRC0008
- Historical drilling and sampling and recent surface sampling highlight potential for West Bryah Project to host gold deposits similar to the Livingstone Project deposits 30km to the west owned by Metal Bank Limited.
Star Minerals’ Chair, Ian Stuart commented:
“Reconnaissance work at the West Bryah continues to deliver significant high-grade gold in surface samples, validating the historical dataset compiled by the Company.
Star Minerals are focussed on building understanding of the controls on gold mineralisation at the Project to get ready for drill testing of the multiple targets at the Dimble and Mount Padbury areas.
We are confident that well designed programs of modern exploration will unveil further targets at the Project, with all commodities under consideration for targeting to compliment the numerous gold Prospects already present”.
The location of the West Bryah Project is shown in the geology plan for the Bryah Basin region, Figure 1 below. The plan shows the extent of Narracoota Formation and Wilthorpe Formation present in the West Bryah Project, both geology units that host significant gold and/or VMS deposits further north and east in the Bryah Basin.
Figure 1: Location Plan for the West Bryah Project with Regional Mines and Prospects
West Bryah Gold Prospects Overview
The Dimble Prospects and Mount Padbury Prospect were the main areas of interest during the field trip. Figure 2 below shows the location of the gold prospects at the Project, plus the Yarlarweelor Gneiss complex, considered prospective for lithium mineralisation. The Dimble Prospects have historical drilling from the 1970s – 1980s, in addition to multiple generations of soil and surface sampling with digital compilation in progress for all historical data. Rock chip results and a high density of early 1900s workings demonstrate the high grade nature of the gold mineralisation at Dimble. There is good exposure of geology throughout the Dimble Area which extends for 9km strike in the east to west direction, and 2.5km in the north – south direction.
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SMS:AU
Unconformity Uranium Drill Targets Identified from 2024 Geophysical Data
Key Highlights
- Final data received and interpretation completed for the ground electromagnetic geophysical surveys from the winter 2024 program at the Marshall and North Millennium projects.
- Several conductive anomalies identified at Marshall, located above and below the unconformity, consistent with regional exploration model.
- Stacked anomalies concurrently with multigenerational geophysical data provides a base to assess the exploration targets and refine drillhole targets.
- The projects are located 15 kilometres from the majority Cameco owned Millennium deposit, and just 40km from the world class McArthur River mine.
- Basin remains funded for the next round of field exploration.
The ground electromagnetic successfully identified 3 main targets which confirms the geological and exploration model. Of note is Target 1 (Figure 1), where modelled EM plates below the unconformity align with a sandstone ZTEM anomaly, which is interpreted to be alteration within sandstone. The identification of these targets is encouraging and consistent with regional trends in the southeastern Athabasca and provides increased confidence in drill hole targeting. Basin is currently reviewing options and priorities of how to progress exploration of these confirmed targets.
Basin’s Managing Director, Pete Moorhouse, commented:
“Conducting ground geophysical surveys on Marshall and North Millennium was a milestone in advancing these underexplored projects in Basin’s uranium portfolio. The form of these anomalies is highly encouraging given the proximity to some of the world’s largest uranium deposits.”
Key results
Following the encouraging conductive anomalism highlighted by the 2023 3D inversion of two historic airborne Electromagnetics (Z‐Tipper Axis) (“ZTEM”) datasets partially covering the current North Millennium and Marshall projects3,4, Basin contracted Discovery International Geophysics5 to carry out ground Stepwise Moving Loop Transient Electromagnetic (‘Ground EM’) surveys on areas of immediate interest within the Projects.
Figure 1 Three main anomalies shown from 2024 ground EM, in plan view (top diagrams) and cross- section looking northeast (bottom diagram). The ground EM anomalies are displayed with the modelled plates against the historical ZTEM data.
The 2024 Ground EM survey data returned six conductive anomaly picks producing three main target areas (Figure 1). The anomalies correlate strongly with the southern edge of the circular ZTEM conductive anomaly at Marshall and the interpreted northern edge of the circular anomaly identified in the historic data. A weaker EM pick was also interpreted centred between the two prominent ZTEM conductivity anomalies.
Three-dimensional modelling using Maxwell produced six electromagnetic conductive plates within the basement stratigraphy, all below the unconformity (Figure 1). The two southeastern plates are clearly aligning with a conductive sandstone ZTEM anomaly identified from the historic data, which is above the interpreted unconformity. This is interpreted as potential basal sandstone alteration proximal to the EM anomalies and constitutes a high-priority drill target area, refer figure 2.
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Airborne EM over Multiple Targets on Ti-Tree Project
- Augustus Minerals has contracted UTS Geophysics to conduct a VTEM Max survey over several Copper, Cu-Ni-PGE, Zn-Pb-Ag and Uranium targets along the money Intrusion and within proximity of the prospective 85k long Ti-Tree Shear.
- The surveys will cover:
- The Money Intrusion, prospective for Cu-Ni-PGE mineralisation.
- Copper Ridge and Nics Bore over anomalous Copper Drilling results
- The Coo Creek prospect where drilling by Augustus in 2023 identified strongly anomalous Zn-Pb-Ag mineralisation.
- The Munaballya Well North area which shows potential for economic Uranium mineralisation.
- The surveys will help to advance the untapped potential of the Ti-Tree project to host economic mineralisation of multiple commodities.
Andrew Ford, GM Exploration
“The VTEM survey will provide key targeting data over three highly prospective and different prospects with potential for multiple commodities. Whilst the high prospectivity for copper mineralisation has been well documented, the addition of uranium and Broken Hill base metal style mineralisation highlights the quality of the underexplored Ti-Tree project”.
VTEM
UTS Geophysics has been engaged to conduct a helicopter borne VTEM Max survey comprising 646-line km over three separate survey areas. The system is excellent for locating discrete conductive anomalies as well as mapping lateral and vertical variations in resistivity which helps map structure, alteration and rock type. The system also collects magnetic data through a caesium magnetometer. The transmitter/receiver loop is suspended on a cable approximately 40m below the helicopter (Figure 1).
Figure 1 VTEM Max helicopter deployed electromagnetic survey arrangement.
Figure 2 Prospects and VTEM Survey areas.
Money Intrusion
The Money Intrusion, which has proven potential to host Ni-Cu-Co-PGE (platinum group elements), is part of the regional Mundine Well Dolerite Suite, a regionally extensive dolerite (strike length >80km). This extensive mafic intrusion, which is comprised of a variety of lithologies, including gabbro in the core, olivine dolerite on the chilled lower contact or keel and fine-grained dolerite on the outer edges. Mapping, aeromagnetics and multi-spectral imagery show that the Money Intrusion within the Ti-Tree Project covers a strike length greater than 16km, reaching widths >600m in the north of E09/23241.
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Latest Kameelburg Assays Up To 10.38% Nb2o5 and 9.89% TREO
Highlights
- A total of 74 highly prospective rock samples recently collected from various beforsite and mafic dykes
- Most notable assays reveal up to 10.38% Nb2O5 and 9.89% TREO
- Large scale geological mapping of Kameelberg carbonatite is nearing completion
- Track access clearance & preparation for underground water supplies underway for upcoming maiden diamond drilling programme
Results from recently collected seventy-four (74) samples were received and highlighted the REE rich nature of the carbonatite with TREO(+Y) assays ranging from 1.16 to 9.89%, refer to Figure 1 for samples locations and Table 1 for results.
Figure 1: Southern Carbonatite Margin Geological mapping area with rock chip samples
Niobium Results Along Mafic Dykes
In addition to sampling the carbonatite plug, a further four (4) samples were collected across the Nb dyke zone on the southwest flank of the carbonatite. Results for these samples ranged from 5.44% to 10.38% Nb2O5. This provides additional confidence to previous niobium findings (see announcements dated 28 February 2024 and 27 December 2023). Table 2 compiles the Nb results with Figure 2 depicting recent sample locations in relation to the previous Nb2O5 results.
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This article includes content from Aldoro Resources, 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.