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Arcadia Minerals Ltd (ASX:AM7, FRA:8OH) (Arcadia or the Company), the diversified exploration company targeting a suite of projects aimed at Tantalum, Lithium, Nickel, Copper and Gold in Namibia, is pleased to announce final drill results from the Eden Pan at its Bitterwasser Lithium clay project.
HIGHLIGHTS
- Assay results for the outstanding 32 drill holes received from the 64-hole follow-up auger drilling campaign over 100% of the Eden Pan at Bitterwasser
- Holes were drilled from surface to a maximum depth of 9.6 m
- All samples submitted for assay returned significant Lithium mineralisation
- Results suggest potential for a significant increase of the existing JORC Mineral Resource (Currently 15.1 million tons at 828 ppm Li, which covered only 24% of the Eden Pan surface area)
- As expected, best individual drillhole intersections for the high-grade middle green clay unit were located in the centre of the pan at shallow depths:
- BMC33: From 4.8 to 9.4 m, 4.6 m @ 811 ppm Li
- BMC32: From 3.8 to 6.6 m, 2.8 m @ 796 ppm Li
- BMC28: From 4.2 to 9.4 m, 5.2 m @ 760 ppm Li
- BMC36: From 3.4 to 5.6 m. 2.2 m @ 744 ppm Li
- Revised Mineral Resource estimate expected by end of Q2/2022
- Bench scale test work for Lithium extraction using both organic and sulphuric acids underway with the aim of assessing the production of a battery grade lithium product
- Exploration drilling is planned over the remaining exposed pans in the Bitterwasser Pan District, which area represents 400% of the size of the exposed area of the Eden Pan
- Option exercised to initiate acquisition of up to 100% of the Bitterwasser Pan District
- Bitterwasser land package currently under investigation by Arcadia comprises 4,031 Km2 in extent
Philip le Roux, the Chief Executive of Arcadia stated:
“The drilling results bode well for a significant increase to the existing Mineral Resource of 15Mt, especially considering that the maiden Mineral Resource was derived from 16 drill holes (i.e. 24% of Eden Pan area) and that 43 holes of the 64-hole follow-up auger drilling campaign intersected the Middle Green Clay Unit, all of which were significantly mineralised to a similar tenor than what we’ve seen from our first drilling campaign at the Eden Pan. The work to declare a revised Mineral Resource is being run concurrently with bench-scale test work (expected to be finalised by Q3/2022) for Lithium extraction using both organic and sulphuric acids with the aim of investigating the possibilities of production of a battery grade lithium product”.
Exploration Results
Assay results for the outstanding 32 drill holes from the 64-hole follow-up auger drilling campaign completed on 9 February 2022 1 over the Eden Pan was received. All the drill holes commenced in the mineralised Upper Brown Clay Unit and every hole, except two drill holes where thin clay units were intercepted at the edges of the Eden Pan, were sampled from top to bottom up to a depth of 9.60m. Notably, the entire sequence of the drill holes sampled (i.e. Upper Brown Clay Unit and Middle Green Glay Unit) returned lithium mineralisation2 . The Middle Green Clay Unit, lithologically named the Middle-Unit (MU), comprises the dominant lithological unit from which the maiden Mineral Resource3 was derived. This green clay unit was intersected in 18 of the 32 drill holes from which assay results were received and extended from a depth of 1.4 m below surface to the maximum End-of-Hole (EOH) depth of 9.60m. A total of 43 holes from the 64-hole follow-up auger drilling campaign intersected the Middle Green Clay Unit at similar depths.
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This article includes content from Arcadia Minerals, 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.
AM7:AU
Quarterly Activities Report – June Quarter 2022
HIGHLIGHTS
- Bitterwasser Lithium Project: Final assay results for remaining 32 of the 64 holes drilled over the Eden Pan on a 500m grid received
- Bitterwasser Lithium Project: Regional investigation into Bitterwasser Lithium-in-clay and Lithium-in-brines minerals system defined extensive tectonic rift-related fault structures in a closed basin (the Kalkrand half-graben), similar to Clayton Valley in Nevada1
- Kum-Kum Nickel Project: Historical core samples obtained during investigation were sampled and returned the first known record of PGE and Au mineralisation in the ultramafic units of the Tantalite Valley Complex. The best results indicated mineralisation of2:
- 0.71% Ni, 0.28% Cu, 0.84 g/t Pd and 0.4 g/t Pt in orthopyroxenite
- 0.58% Ni, 0.30% Cu, 0.69 g/t Pd, 0.31 g/t Pt and 0.26% Au in orthopyroxenite
- Swanson Tantalum Project: Mineral Resource update delivers an estimate for a total indicated and inferred resource of 2.59Mt (an increase of 115%) at an average grade of 486 ppm Ta2O5 (an increase of 17.9%), 73 ppm Nb2O5 and 0.15 % Li2O.3 An Environmental Clearance Certificate and Mining Licence was also issued for the project.
1 Refer to ASX Announcement dated 09 May 2022 titled “Regional study advances work program for district scale Lithium in brines”
2 Refer to ASX Announcement dated 09 May 2022 titled “Kum-kum nickel project mineral systems approach results”
3 Refer to ASX Announcement dated 06 May 2022 titled “JORC Mineral Resource at Swanson Tantalum project doubles in size
SUMMARY OF MINING EXPLORATION FOR THE QUARTER
Bitterwasser Lithium Project
Assay results for the outstanding 32 drill holes from the 64-hole follow-up auger drilling campaign completed on 9 February 20224 over the Eden Pan was received during the quarter. All the drill holes commenced in the mineralised Upper Brown Clay Unit and every hole, except two drill holes where thin clay units were intercepted at the edges of the Eden Pan, were sampled from top to bottom up to a depth of 9.60m. Notably, the entire sequence of the drill holes sampled (i.e. Upper Brown Clay Unit and Middle Green Glay Unit) returned lithium mineralisation5.
The Middle Green Clay Unit, lithologically named the Middle-Unit (MU), comprises the dominant lithological unit from which the maiden Mineral Resource6 was derived. This green clay unit was intersected in 18 of the 32 drill holes from which assay results were received and extended from a depth of 1.4 m below surface to the maximum End-of-Hole (EOH) depth of 9.60m. A total of 43 holes from the 64-hole follow-up auger drilling campaign intersected the Middle Green Clay Unit at similar depths.
Figure1: Stacked cross section of the Eden Pan depicting drill-hole interpretation with reference to the existing Mineral Resource (green layers) and clay units intercepted in the follow-up auger drilling program.
4 Refer to ASX Announcement dated 10 March 2022 titled “Encouraging lithium drilling assay results at Bitterwasser”.
5 Refer to ASX Announcement dated 2 May 2022 titled “Final Lithium Drilling assay results at Bitterwasser”.
6 Refer to ASX Announcement dated 3 November 2021 titled “Arcadia acquires lithium project with JORC Mineral Resources”.
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This article includes content from Arcadia Minerals, 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.
Kum-Kum Nickel Project Mineral Systems Approach Results
HIGHLIGHTS
- The Department of Earth Sciences at the University of Stellenbosch concluded a Minerals Systems Approach investigation over the Kum-Kum Ni-Cu-PGE Project Licenses
- During the investigation several historical documents containing exploration results over the Kum-Kum Project were discovered, which reported best historical borehole intersections from three boreholes drilled by Rio Tinto Exploration, Tantalite Valley Minerals and Southern Sphere between 1972 and 1976 as follows:
- 16.00 m @ 0.65% Ni, 0.16% Cu
- 6.00 m @ 0.61% Ni, 0.30% Cu
- 2.44 m @ 0.62% Ni, 0.30% Cu
- Historical core samples obtained were sampled and returned the first known record of PGE and Au mineralisation in the ultramafic units of the Tantalite Valley Complex. The best results indicated mineralisation of:
- 0.71% Ni, 0.28% Cu, 0.84 g/t Pd and 0.4 g/t Pt in orthopyroxenite
- 0.58% Ni, 0.30% Cu, 0.69 g/t Pd, 0.31 g/t Pt and 0.26% Au in orthopyroxenite
- The primary magmatic sulphides comprise of coarse-grained pentlandite, pyrrhotite, and chalcopyrite
- Whole rock geochemistry highlights the geochemical similarities between the TVC and the Kum-Kum complexes. The TVC crystallized as a mafic/ultramafic layered intrusion and likely from a primitive mantle-derived parental magma.
Philip le Roux, the CEO of Arcadia stated:
“Historical drilling results reporting high values of Nickel and Copper mineralisation attracted us to the Kum-Kum Project. From the work done by the team from the University of Stellenbosch it is evident that PGE and Au mineralisation is also present and that we are looking at a geological environment that possibly could contain a stratiform Ni-Cu-PGE disseminated sulphide ‘reef’ horizon. The prospect of possibly discovering a polymetallic (Ni, Cu, Au & PGE’s) deposit has increased the allure of the KumKum Project for us, which we will eagerly follow up with further exploration. The results of the study will assist the Company to focus its exploration efforts in order to define drill targets.”
Mineral Systems Approach Results
The Tantalite Valley Complex (TVC) has been subject to a geological study by a team from Arcadia and the University of Stellenbosch involving two field sampling campaigns (8 days; 94 field samples collected) augmented with detailed consideration of historical drill core segments (57 samples), and supporting data from historical records, hyperspectral mapping, and stream sediment sampling.
Collected field- and core- samples were subjected to a suite of analytical protocols including reflected- and transmitted-light optical petrography, whole-rock major and trace element chemistry, precious metal assays, sulphur isotope analyses, scanning electron microscopy with associated spectrometries and in-situ Laser Ablation Inductively Coupled Plasma Mass Spectrometry (LA-ICP-MS) of individual sulphide grains. Together, these results provide novel insights into the known mineralisation and prospectively of the TVC.
The TVC is a ~7 km long by 3.3 km wide and roughly oval-shaped mafic-ultramafic complex representing a fault-bound block inside a dextral Pofadder Shear Zone (PSZ) that cuts across southern Namibia. Existing geochronology places the TVC as a ~1.2 Ga intrusion and roughly coeval with a Kum Kum Klippe mafic complex that is located roughly 40 km south-east and along the strike of the PSZ.
Whole rock geochemistry highlights the geochemical similarities between the TVC and the Kum Kum suite, but with the former uniquely showing much stronger geochemical evidence for overwhelmingly cumulate rocks. This implies that the TVC crystallized as a significant mafic/ultramafic layered intrusion and likely from a primitive mantle-derived parental magma that originated from a metasomatized mantle.
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This article includes content from Arcadia Minerals, 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.
New Gold with Silver & Base Metals Results Highlight Potential Discoveries in Three Key Areas at Corvette River
The Phase 1 sampling program focussed on three key prospects: Felicie on the Corvette Lithium Trend, which hosts Patriot Battery Metals’ world-class Corvette Lithium Project2, and the West Eade and East Eade claims on the parallel Corvette South Trend (see Figure 1).
The program included mapping and extensive rockchip and channel sampling in areas of previous high-grade gold samples found at West Eade and East Eade, as well as follow up of previous high-grade gold-silver-copper results at the Felicie property. Significant results obtained for each of the key target areas are as follows:
- Felicie Project – New results from the western zone of Felicie included trench sample assays grading up to 3.85g/t gold (Au), 19.8g/t Silver (Ag), 0.14% Copper (Cu), 0.84% Zinc (Zn), 0.5% lead (Pb). These results validate historical rock chip sample results that included grades of up to 4.2 g/t Au, 44.1 g/t Ag, 0.23% Cu, 1.39% Pb and 1.25% Zn3, hosted by a northeast trending shear zone mapped for approximately 200m and open to the NE and SW (see Figure 2, Images 1-4)4.
- West Eade Project – New results grading up to 4.42g/t gold were obtained from rock chip samples, validating gold results from prior programs which have included 11.45 g/t & 8.56 g/t Au (2005), 3.37 g/t Au (2019) & 2.56 g/t Au and 5.5 g/t Au (2020)3. Gold mineralisation has been demonstrated over an east-west trending corridor of over 1000m within a strongly folded and faulted banded iron formation (BIF) up to 300m in width and 2,000 m in length. (see Figure 3, Images 5-8).
- East Eade Project – Trench sample assays revealed broad mineralisation grading >0.3 g/t Au, including 1m @ 0.83 g/t Au associated with quartz veins and up to 15% sulphides within a folded and faulted BIF outcrop. This outcropping mineralised zone extends for >400m, is open to the east and west, and appears to be the source of previous high-grade rock chip samples of outcropping boulders grading 29.7 g/t Au3 and 12 g/t Au3, 160m to the east (See Figure 4, Images 9 - 14).
The new results and extensive field mapping have significantly enhanced focus areas for a Phase 2 program. Planning is underway for an exploration program aimed at further defining and extending the mineralised corridors, including pinpointing priority drilling positions for later work.
Figure 1: Metals Australia’s Corvette River Project – East Pontois, Felicie, West Eade & East Eade Prospects – Newresults, previous peak results & geology and magnetics
Metals Australia CEO Paul Ferguson commented:
“The results we have received from our first phase exploration program at our Corvette River project in Quebec are extremely encouraging, confirming three emerging gold discoveries at our Felicie, West-Eade and East-Eade prospects.
Our sampling program has successfully extended the mineralised zone at Felicie, with the new results validating historical data by demonstrating a broad zone of extensive mineralisation which will now be prioritised for follow-up exploration. While the near-surface gold results are significant, silver, copper, lead and zinc are also consistently present with the gold at highly anomalous levels.
The two Eade prospects cover a combined strike length of over 20km. The program was focused on mapping and trenching to extend areas near historical mineralisation. Focus in West Eade was on a Banded Iron stone (BIF) unit over 2km long which hosts disseminated sulphides that had yielded gold results previously. The program extended those results with a best result of 4.42 g/t gold. We are now seeing good mineralisation across approximately 1km of surface strike length extent. These results also warrant further work in this area.
East Eade also contains a large, banded iron formation of over 3.6km strike-length trending east- west. Gold had been found in veins within the BIF unit previously. Numerous channel and rock chip samples in our program yielded gold results up to 0.83g/t within an over 10m wide mineralised zone. Significantly, a large outcrop ridge was identified of sheared, folded and faulted silicate, oxide and sulphide facies within the BIF that also supports further investigation.
The results further underline the prospectivity of the three zones tested for gold, silver and base metals. All three areas warrant more detailed investigation, and our team is working closely with the local Magnor Exploration team on defining next steps for a follow-up program, including further systematic trenching and targeted sampling.
The Corvette River results also demonstrate the value our work programs are generating across our suite of projects in known mineralised zones in Canada and Australia. Our short to near term pipeline of news flow remains strong, with Warambie drilling samples now in the laboratory, drilling at Big Bell North project set to commence this month and Warrego East in the Northern Territory also approaching drill-ready status. Our flagship Lac Carheil project continues to develop as one of the leading graphite projects in North America today, with excellent progress being made across key studies to advance it towards prefeasibility.
Few companies our size have such a portfolio of high-quality projects and even fewer have the technical and financial capability to progress them as we are doing. This places us in an enviable position to be able to unlock significant value from multiple parallel workstreams in the near term.“
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This article includes content from Metals Australia Ltd, 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.
