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3km Strike of Outcropping Manganese Confirmed from Wandanya
- Detailed mapping and rock chip sampling completed over the Wandanya project following successful RC drill2 and previous rock chip sampling campaigns1.
- Portable XRF (pXRF) analysis confirms multiple widespread rock chip samples with consistently similar grades to the RC drilling completed at W2, ranging between 30 and 50% Mn.
- 3km overall strike of outcropping manganese mineralisation now confirmed with only 240m of this drill tested.
- Significant opportunity to expand the mineralised footprint with extensive manganese outcrops well exposed in multiple incised gulleys extending 150m cross strike and shallowly dipping to the east.
- Initial metallurgical testwork is underway to potentially produce a high-quality manganese concentrate for silico or ferro alloying and feedstock for high purity manganese sulphate (HPMSM) testwork.
- Additionally, rock chip sampling provided further evidence of widespread hematite enriched sediments that are similar to previously reported1 iron rich formations that assayed 63.3%, 63.1 and 57.6% Fe. The Company is awaiting laboratory-based iron XRF assays, as the preliminary pXRF results were beyond the accurate grade range of the pXRF
Cautionary Note in relation to visual estimates and pXRF readings: The Company cautions that visual estimates and pXRF readings should never be considered a proxy or substitute for laboratory analyses. Laboratory assays (XRF for Mn C Fe suite of elements) are required to determine representative grades of the elements associated with the visible mineralisation reported from geological mapping and pXRF readings. Further details are found within Appendix 1.
Rock chip samples have been submitted to Bureau Veritas in Perth WA with analytical results expected in early to mid-December.
Black Canyon’s Managing Director Brendan Cummins said:
“Following the successful recent RC drill program, detailed mapping and rock chip sampling assay results continue to impress. We are seeing strike extensive mineralisation along a 3km long corridor, which demonstrates the scale potential of this new and unique style of manganese mineralisation.
“Widespread outcrops and consistent high-grade manganese results from drilling and rock chip sampling are becoming a clear characteristic of the Wandanya discovery. In addition, we are eagerly awaiting the assay results from rock-chip sampling of the extensive hematite enriched iron formations also mapped in the area that look quite prospective.
“We look forward to returning with an RC rig in 2025 to further test these compelling targets along strike and down dip to determine their full-scale potential.”
Figure 1. Manganese corridors at the Wandanya Project with manganese results above 30% shown overlying topography (red=elevated) and satellite imagery. Photo locations are also shown for Figures 2-C.
W2 Prospect, Wandanya (BCA 100%)
The stratabound hosted manganese mineralisation has been traced along a 3km long corridor, is dipping shallowly to the east and remains open. The footwall and hangingwall units comprise of dolomite and calcareous siltstone respectively. The target manganese horizon is often well exposed by gulleys eroding through the hangingwall, forming continuous outcrops up to 150m cross-strike before the unit is overlain by shallow dolomite and cover sequences.
At the W2 prospect, only 240m of strike at a width of 200m has been drill tested with consistent grades and widths2 including:
- 5m @ 31.1% Mn from surface, including 2m @ 42% Mn (WDRC005)
- 6m @ 26.3% Mn from 4m, including 3m @ 40.1% Mn (WDRC021)
- 6m @ 2G.6% Mn from surface, including 3m @ 41.0% Mn (WDRC031)
- 6m @ 2G.2% Mn from 4m, including 3m @ 3G.7% Mn (WDRC032)
- 5m @ 32.4% Mn from 3m, including 3m @ 40.1% Mn (WDRC033)
To the west, multiple occurrences of hematite rich sediments were mapped and sampled, with the results from the pXRF readings exceeding the accurate range of the pXRF. Hence, these samples have been submitted to the laboratory and assay results will be reported when they have been received.
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Premium Magnetite Iron Product (>70% Fe) Confirmed Across Waterfall Prospect (WA)
Key Points:
- Premium grade iron product (>70% Fe) has been produced across the Waterfall Prospect by beneficiation test work using the Davis Tube Recovery (DTR) method.
- Magnetite was liberated from its host rock using a relatively coarse grind size of 75um and 106um, which suggests potential savings on future processing costs.
- Average DTR recoveries of approximately 34% indicate that most, if not all, of the magnetite has been recovered in the concentrate.
- Impurity levels (silica, alumina, sulphur and phosphorus) within the magnetite concentrate are extremely low.
- The Morrisey Project is well located, being ~120km by road north of Mullewa and then ~80km by rail to the Port of Geraldton.
- Waterfall is the first of at least five targets identified within the Morrisey Project, with potential to host magnetite mineralisation.
Next Steps:
- Native Title clearance surveys over further magnetite targets are scheduled to be completed later this year.
- Drilling of additional targets is being planned for 2025, under the Strategic Alliance Agreement with a subsidiary of South32 Limited.
Beneficiation test work using the DTR method confirmed excellent recoveries of magnetite from its host rock (averaging ~34%) across the prospect, using coarse grind sizes of 106um and 75um, highlighting potential for the prospect to deliver a premium iron (Fe) product with very low impurity levels and enhancing the future commercial potential of the Project.
The Morrisey Project is well located, being ~120km by road north of the town of Mullewa, and a further 80km by rail to the Port of Geraldton (Figure 1). No discussions have been held with transport providers at this stage.
Figure 1: Morrisey Project: Location Plan showing road and rail access to the Port of Geraldton.
DTR results for all remaining drill-holes have now been received, confirming that iron (Fe) grades greater than 70% Fe can be achieved from both the 75um and 106um grind sizes for all the composite samples (varying from 4m to 12m in length). The distribution of DTR grades and down-hole thicknesses for the 75um grind size is shown in Figure 2, with cross-sections provided in Figures 3 and 4.
While there are no significant differences between results from the two grind sizes used, results for 75um are slightly more consistent, with less variations than for the 106um data (see Tables 1 and 2 below).
DTR Fe grades for the 75um grind size vary from 70.25% Fe to 71.63% Fe with recoveries varying from 18.6% for the lower grade composite samples (<25% Fe) and up to 44.3% for higher grade composites (>35%Fe), with an average recovery of magnetite across the prospect of ~34%.
Deleterious elements for the 75um product were all very low, including silica (average 1.3% SiO2), alumina (average 0.19% Al2O3), sulphur (average 0.08% S) and phosphorous (average 0.004% P), only increasing slightly for the coarser grind product.
Petrological examination of selected samples indicates that the magnetite grains are highly fractured, which is likely to contribute to the excellent magnetite recoveries achieved via the DTR test work.
Similar magnetic and gravity anomalies to the Waterfall prospect occur at a number of locations within the Morrisey Project. Five targets have been identified for drilling to help determine the overall magnetite potential of the district.
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Exploration Update - Visible Gold Intersected at Salanie
HIGHLIGHTS:
- Visible gold identified in drilling at the A1 prospect at 19m depth (Figure 1), associated within a broader 13m zone of quartz veining and shearing from 9.6m downhole:
- Interpreted as extension to system in trench SATR001 (10.3m @ 3.4g/t Au and 1.4m @ 15.7 g/t Au) (Figure 5);
- Assays for this hole are pending.
- At P6, a significant quartz veining/shear system over 20m with associated sulphides has been identified along the trend of historical high-grade underground workings that produced at an average of 16g/t Au.
- The underground workings at P6 represent a priority target that will be further targeted in the 2025 drill season:
- System displays as quartz veining and associated visual estimates of sulphides (trace to 25% pyrite+/-chalcopyrite) intersected in three principal positions in drillhole SLDD002 (61- 65m; 71-75m and 84-87m).
- Drilling completed for the current field season, with discussions advanced with a highly reputable new drilling contractor for drilling in 2025.
- At Salanie, five holes for 328m (two at the P6 prospect and three at the A1 prospect) were completed (two of these did not reach target depth due to drilling performance), with assay results received for 3 holes.
- In the northern areas around the Mikouma and Binda prospects, infill soil sampling has strengthened existing gold targets in these regions with anomalies up to 200ppb Au. Follow up ground reconnaissance will assist in delineating further the drill targets.
- Company to undertake a one (1) for three (3) non-renounceable entitlements offer to raise approximately $3.25 million (before costs).
Figure 1: Examples of visible gold identified in SLDD004 – at 19.04m (associated with chalcopyrite (Cpy) and galena (Gn)).
The Company cautions that visual estimates of sulphides or mineral abundance should never be considered a proxy or substitute for laboratory analysis. Laboratory analysis would be required to determine the widths and grades of sulphides, visible gold, or suspected mineralised intervals reported herein. Visual information also potentially provides no information regarding impurities or deleterious physical properties relevant to valuations. Assays are expected within 3-5 weeks.
Apollo Minerals’ Managing Director, Mr Neil Inwood, commented:
“The first pass drilling is highly encouraging having identified visible gold associated with quartz veining at A1 and a significant shear/quartz vein system at P6. Assays are pending from the key holes at A1. The Salanie system is interpreted to be in the same regional trend of Archean greenstones as Managem’s 1m oz Eteke deposit; highlighting the potential in the broader system.”
“Unfortunately, a combination of late arrival and poor performance from the drilling contractor and the end of the field season has meant that less than a quarter of the planned holes for 2024 were completed and the P6 target was only partially tested by one drill hole. We are in advanced discussions with another drilling company to commence drilling in the new year. Such a partner will enable a significant increase in drilling rate and quality and enable us to further unlock the untested potential at the Salanie Gold Project.”
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This article includes content from Apollo Minerals 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.