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Wildcat Resources Limited (ASX: WC8) (“Wildcat” or the “Company”) is pleased to announce it has received the first assay results from maiden drilling at the Tabba Tabba Lithium Tantalum Project in the Pilbara, near Port Hedland, WA 1 (Appendix 1, Table 1), with initial results from 21 RC holes confirming pegmatite bodies contain significant widths and grades of lithium mineralisation (see Figures 1 to 4). Tabba Tabba is near some of the world’s largest hard-rock lithium mines, 47km from Pilbara Minerals’ (ASX: PLS) 414Mt Pilgangoora Project and 87km from Mineral Resources’ (ASX: MIN) 259Mt Wodgina Project.
Highlights
- First assays from Wildcat’s maiden drilling at Tabba Tabba, WA, confirm high-grade lithium mineralisation from surface in northern and central pegmatite clusters, demonstrating potential for a large-scale lithium camp
- Best results from the central cluster:
- 85m at 1.1% Li2O from surface (TARC086) (down-hole length)
- including 59m @ 1.5% Li2O from surface
- 218m at 0.8% Li2O from 16m (TARC089) (down-hole length)
- including 22m at 1.0% Li2O from 31m
- including 23m at 1.0% Li2O from 152m
- including 51m at 1.5% Li2O from 183m to end of hole
- Estimated true width is approximately 53m
- 85m at 1.1% Li2O from surface (TARC086) (down-hole length)
- Best results from the northern cluster:
- 21m at 1.1% Li2O from 42m (TARC055) (est. true width)
- 26m at 0.9% Li2O from 76m (TARC015) (est. true width)
- 20m at 1.3% Li2O from 20m (TARC005) (est. true width)
- 16m at 1.1% Li2O from 17m (TARC001) (est. true width)
- Central pegmatite zone is now more than 1.2km long at true widths of 50m and up to 132m
- Over 66 drill holes are pending assay and over 15,000 metres drilled year to date with drilling continuing
- Wildcat to deploy a diamond drill rig in early October to accelerate the evaluation of the new discovery
- Continuous batches of assays expected over the coming months
1 ASX announcement 17 May 2023: https://www.investi.com.au/api/announcements/wc8/4788276b-630.pdf
Wildcat’s initial batch of assays comprises seventeen holes from the northern pegmatite cluster and four holes from the central pegmatite cluster. Initial scout drilling commenced in the north of the Mining Leases, and this confirmed shallow- north easterly dipping, stacked pegmatites. The exploration program proceeded south to the central area where multiple, wide, sub-vertical (70°) dipping pegmatites were intercepted, and a second rig was added. The first intercepts from the central area were fast-tracked through the laboratory so they could be included in the first batch of results to aid exploration planning.
Managing Director Samuel Ekins said: “I’m confident we are in the early stages of a major discovery at Tabba Tabba and it’s been a welcome surprise to see the size of the system. Over 95% of all holes to date have intersected pegmatites and we eagerly await further rounds of assays. Our central pegmatite is now over 1.2km long (open to the north), subvertical and outcropping at widths of over 50m which is very significant.”
“Given our proximity to major global lithium projects including Pilgangoora and Wodgina, we see plenty of potential to uncover a large-scale lithium deposit across the extensive 3.2km trending pegmatite system. We anticipate receiving Foreign Investment Review Board (FIRB) approval for our acquisition of Tabba Tabba and Ministerial Approval by the end of September and bringing our first diamond rig onto site in early October, with more results from our initial drilling expected also.”
Discussion of Exploration Activities
The Company has focussed on drilling the defined “simple pegmatite” outcrops which were mapped by Pancontinental in the 1980’s as albite rich, the pegmatites at Pilagangoora are described as albite-spodumene type. The Tabba Tabba LCT pegmatite field has never been explored for lithium historically and previous groups only focussed on the high-grade tantalum resource. Two RC rigs are drilling at Tabba Tabba and to date 87 holes for 15,142m have been competed (See Figure 1 and Appendix 1, Table 2). A third rig is planned to be deployed in early October to commence diamond drilling to accelerate the evaluation of the lithium discoveries.
Assays have been returned for 21 RC holes from two areas of the pegmatite field, the northern cluster and the central area, as highlighted in red on Figure 1. Significant intercepts are listed in Appendix 1, Table 1 and are reported using 0.1% Li2O cut-off grade with 10m internal dilution for aggregated intercepts and 0.3% Li2O cut-off and 3m of dilution for internal high-grade zones. The results represent drilling from only a small area of the 3.2km trend of over 50 outcropping pegmatite drill targets and are for only 21 of the 87 holes drilled to date.
The broadest intersections have been returned from the previously undrilled central area of the Mining Leases to the south of the Tabba Tabba Tantalum deposit (Figures 1 and 2). In this area the pegmatites seem to occur as large, north-south trending, steeply east dipping, stacked sets with some sections more than 130m wide (true width). The central cluster is currently defined by mapping and drilling over a 1.2km strike length (which is open in all directions) and is the priority of current exploration efforts due to the wide, high-grade intersections returned from initial drilling.
RC drill hole TARC086 returned 85m at 1.1% Li2O from surface and includes a high-grade zone of 59m at 1.5% Li2O from surface. Note that fresh rock is intercepted at 2m below surface, and this has been common in the holes drilled to date. RC hole TARC089, collared approximately 80m to the north of TARC086), returned 218m at 0.8% Li2O from 16m to end of the hole (true width estimated at ~53m). The pegmatite intercept in TARC089 contains several internal high-grade zones including 22m at 1.0% Li2O from 31m, 23m at 1.0% Li2O from 152m and 51m at 1.5% Li2O from 183m (including 4m at 1.9% Li2O at the end of the hole).
The pegmatite was initially interpreted to dip west based on observations of magmatic layering in the outcropping pegmatite. However, after TARC086 and TARC089 intercepted very wide intervals of pegmatite it was suspected that the holes were drilled obliquely down-dip and scissors holes (drilled to the west) were completed (see Figure 3). The follow-up scissor holes confirm the pegmatites in this area have an easterly dip, and therefore the down hole intersections in TARC086 and 089 are not true width. However, the follow up drilling has confirmed the pegmatites in this area appear to be of considerable thickness over 50m and up to 132m (true width) and extend over 1.2km of strike (currently open in all directions) as illustrated on Figures 1 and 2.
Figure 1 – Tabba Tabba Project showing outcropping pegmatites in blue and the collar locations of the holes (green triangles) drilled to date. The central area and northern areas are highlighted in red. Note that the thick pegmatite intercepted in TARC089, TARC087 and TARC023 is highlighted in light blue and appears continuous and open over 1.2km and averages 40m width in all intercepts to date, with a peak width of 132m.
Figure 2 shows a section through TARC089 and follow-up scissor holes TARC117, TARC118 and TARC119 – assays pending. The section shows four, thick, stacked steeply dipping pegmatite bodies, noting that the west quarter of the section progresses under shallow alluvial cover.
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This article includes content from Wildcat Resources Limited, 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.
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.