New Shallow Gold Zone: Northern Zone Gold Project
Assay results from six drillholes confirm shallow gold mineralisation in previously undrilled saddle area at Northern Zone Project.
- Best individual assay result 1m at 11.0 g/t Au from 46m
- Best interval result 5m at 3.09 g/t Au from 47m
- Potential zone width ~600m wide shallow oxide mineralisation
- Project location 25km east of Kalgoorlie, Western Australia
- Drillholes assayed to date 6 grade control holes
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Oracle Power PLC (AIM:ORCP), an international project developer, is pleased to announce assay results from a further six drillholes at the Northern Zone Gold Project ("Northern Zone Project" or "Project"), located just 25km east of Kalgoorlie in Western Australia (refer to Figure 1 for location). Results from a further nine grade control drillholes are anticipated to be received shortly. Samples from 28 air core drillholes from the recently completed program have been submitted for assay, with results from all 37 drillholes expected to be received in batches over the next six weeks.
Highlights
- Riversgold continues to keep intersecting shallow gold mineralisation at Northern Zone Project
- Assay results from a further 6 drillholes have been received.
- Gold mineralisation now identified in the previously undrilled "saddle" between the eastern and northwestern mineralised zones.
- Significant results from the second batch of results include:
o 5m at 3.09 g/t Au from 47m (NZAC152)
o 6m at 0.72 g/t Au from 66m (end-of-hole) (NZAC152)
o 6m at 0.65 g/t Au from 32m (NZAC153)
o 1m at 11.0 g/t Au from 46m (NZAC153)
o 8m at 0.62 g/t Au from 32m (NZAC154)
o 2m at 1.47 g/t Au from 49m (NZAC155)
o 7m at 1.58 g/t Au from 42m (NZAC156)
o 2m at 1.32 g/t Au from 44m (NZAC157)
- 2025 drilling has now concluded with results from a further 37 drillholes due to be received in batches over the coming weeks.
Naheed Memon, CEO of Oracle, commented:
"Intersecting these gold grades in the previously undrilled saddle area between the eastern and the northwestern shallow gold zones is highly significant as it demonstrates the potential for these two zones to join together. Our modelling suggests that this could constitute a ~600m wide zone of shallow oxide mineralisation overlying the Northern Zone porphyry system.
"We are still awaiting results from 9 drillholes from the grade control drill rig program, and 28 vertical air core drillholes from the drilling have just been submitted to the lab. With results from these 37 drillholes expected in the coming weeks, we are looking forward to a constant stream of news-flow leading into the New Year.
"The two recently completed drill programs were designed to add to the gold footprint in the top 50-60m at the Northern Zone Project, and to enhance the MEGA Resources mining scenario for 2026[1]. Results continue to expand the lateral footprint of Northern Zone and we are achieving the goal of making the Project bigger in the oxide zone. I look forward to updating shareholders as we progress the Project."
The latest drill programs (Tables 1-3) continue to successfully intersect the mineralised host porphyry over an increasing footprint and consistently validate the broader gold mineralisation model. Gold mineralisation has been successfully intersected in a previously undrilled area referred to as the saddle with modelling suggests the potential of joining the northwestern and eastern mineralisation. The last drillhole on the eastern extension intersected significant gold mineralisation (see Figure 2), with the overall footprint expanding. A key SW-NE cross-section derived from 3D Leapfrog software is illustrated in Figure 3. The interpretation illustrates gold grade shells derived from all the significant intercepts reported to April 2025. The Leapfrog model will be updated once all pending assays are received.
Riversgold will continue advancing its understanding of the Project before proceeding with a maiden Mineral Resource Estimate (MRE), but this drilling will be used by Mega Resources in their mine planning for our joint plans to start mining in the first half of 2026.
**END**
Oracle Power PLC
Naheed Memon - CEO +44 (0) 203 580 4314
Strand Hanson Limited (Nominated Adviser & Broker)
Rory Murphy, Matthew Chandler, Rob Patrick +44 (0) 20 7409 3494
St Brides Partners Limited (Financial PR)
Susie Geliher, Isabel de Salis +44 (0) 20 7236 1177
Drilling Information
Table 1: Northern Zone Significant Intercepts from all grade control drill rig drillholes with previously reported results in grey shading.
| Hole ID | From (m) | To (m) | Width (m) | Au g/t | Intercept |
|---|---|---|---|---|---|
| NZAC146 | 56 | 65 | 9 | 1.33 | 9m @ 1.33 g/t Au from 56m , NZAC146 |
| NZAC149 | 45 | 48 | 3 | 4.39 | 3m @ 4.39 g/t Au from 45m , NZAC149 |
| including | 47 | 48 | 1 | 0.93 | Including 1m @ 11.78 g/t Au from 47m , NZAC149 |
| NZAC150 | 48 | 51 | 3 | 1.89 | 3m @ 1.89 g/t Au from 48m , NZAC150 |
| NZAC150 | 61 | 66 | 5 | 1.75 | 5m @ 1.75 g/t Au from 61m (EOH) , NZAC150 |
| including | 64 | 66 | 2 | 3.49 | Including 2m @ 3.49 g/t Au from 64m (EOH) , NZAC150 |
| NZAC151 | 47 | 51 | 4 | 0.83 | 4m @ 0.83 g/t Au from 47m , NZAC151 |
| NZAC152 | 47 | 52 | 5 | 3.09 | 5m @ 3.09 g/t Au from 47m, NZAC152 |
| NZAC152 | 66 | 72 | 6 | 0.72 | 6m @ 0.72 g/t Au from 66m (EOH), NZAC152 |
| NZAC153 | 32 | 38 | 6 | 0.65 | 6m @ 0.65 g/t Au from 32m, NZAC153 |
| NZAC153 | 46 | 47 | 1 | 11.00 | 1m @ 11.0 g/t Au from 46m, NZAC153 |
| NZAC153 | 54 | 56 | 2 | 0.74 | 2m @ 0.74 g/t Au from 54m, NZAC153 |
| NZAC154 | 62 | 70 | 8 | 0.62 | 8m @ 0.62 g/t Au from 32m, NZAC154 |
| NZAC154 | 45 | 46 | 1 | 1.10 | 1m @ 1.10 g/t Au from 45m, NZAC154 |
| NZAC155 | 49 | 51 | 2 | 1.47 | 2m @ 1.47 g/t Au from 49m, NZAC155 |
| NZAC156 | 42 | 49 | 7 | 1.58 | 7m @ 1.58 g/t Au from 42m, NZAC156 |
| NZAC157 | 33 | 36 | 3 | 0.70 | 3m @ 0.70 g/t Au from 33m, NZAC157 |
| NZAC157 | 44 | 46 | 2 | 1.32 | 2m @ 1.32 g/t Au from 44m, NZAC157 |
Table 2: Northern Zone Drill Collar Locations with previously reported results in grey shading.
| Hole ID | Type | MGA_E | MGA_N | Elevation (m) | Total Depth (m) | Dip ( o ) | AZM_MGA | Date |
|---|---|---|---|---|---|---|---|---|
| NZAC146 | GC | 381899.8 | 6592682.5 | 356.7 | 66 | 0 | -90 | 20/10/25 |
| NZAC147 | GC | 381912.2 | 6592694.9 | 356.8 | 63 | 0 | -90 | 21/10/25 |
| NZAC148 | GC | 381919.8 | 6592682.5 | 356.7 | 66 | 0 | -90 | 22/10/25 |
| NZAC149 | GC | 381932.2 | 6592 694.9 | 356.8 | 60 | 0 | -90 | 22/10/25 |
| NZAC150 | GC | 381939.8 | 6592682.5 | 356.8 | 66 | 0 | -90 | 23/10/25 |
| NZAC151 | GC | 381952.2 | 6592694.9 | 356.7 | 66 | 0 | -90 | 23/10/25 |
| NZAC152 | GC | 381959.8 | 6592682.5 | 356.7 | 72 | 0 | -90 | 24/10/2025 |
| NZAC153 | GC | 381702.7 | 6592645.4 | 356.4 | 66 | 0 | -90 | 25/10/2025 |
| NZAC154 | GC | 381690.3 | 6592633 | 356.4 | 64 | 0 | -90 | 25/10/2025 |
| NZAC155 | GC | 381698 | 6592620.6 | 356.3 | 60 | 0 | -90 | 25/10/2025 |
| NZAC156 | GC | 381705.6 | 6592608.2 | 356.2 | 63 | 0 | -90 | 26/10/2025 |
| NZAC157 | GC | 381681 | 6592608.2 | 356.3 | 62 | 0 | -90 | 26/10/2025 |
Table 3: Northern Zone assay results above 0.3 g/t Au from all grade control drill holes, with previously reported results in grey shading.
| Hole ID | Depth From | Depth To | Width | Au ppm |
|---|---|---|---|---|
| NZAC146 | 56 | 57 | 1 | 3.46 |
| NZAC146 | 57 | 58 | 1 | 1.71 |
| NZAC146 | 58 | 59 | 1 | 1.50 |
| NZAC146 | 59 | 60 | 1 | 1.39 |
| NZAC146 | 60 | 61 | 1 | 0.76 |
| NZAC146 | 62 | 63 | 1 | 1.01 |
| NZAC146 | 63 | 64 | 1 | 1.28 |
| NZAC146 | 64 | 65 | 1 | 0.65 |
| NZAC148 | 47 | 48 | 1 | 0.44 |
| NZAC148 | 60 | 61 | 1 | 0.43 |
| NZAC149 | 42 | 43 | 1 | 0.98 |
| NZAC149 | 45 | 46 | 1 | 1.35 |
| NZAC149 | 47 | 48 | 1 | 11.78 |
| NZAC150 | 48 | 49 | 1 | 2.04 |
| NZAC150 | 49 | 50 | 1 | 3.33 |
| NZAC150 | 50 | 51 | 1 | 0.30 |
| NZAC150 | 61 | 62 | 1 | 0.50 |
| NZAC150 | 62 | 63 | 1 | 0.66 |
| NZAC150 | 63 | 64 | 1 | 0.59 |
| NZAC150 | 64 | 65 | 1 | 4.26 |
| NZAC150 | 65 | 66 | 1 | 2.72 |
| NZAC151 | 47 | 48 | 1 | 2.01 |
| NZAC151 | 48 | 49 | 1 | 0.52 |
| NZAC151 | 50 | 51 | 1 | 0.59 |
| NZAC152 | 67 | 68 | 1 | 0.69 |
| NZAC152 | 68 | 69 | 1 | 0.37 |
| NZAC152 | 69 | 70 | 1 | 0.49 |
| NZAC152 | 70 | 71 | 1 | 1.47 |
| NZAC152 | 71 | 72 | 1 | 0.91 |
| NZAC153 | 32 | 33 | 1 | 0.46 |
| NZAC153 | 34 | 35 | 1 | 0.3 |
| NZAC153 | 37 | 38 | 1 | 2.9 |
| NZAC153 | 46 | 47 | 1 | 11 |
| NZAC153 | 54 | 55 | 1 | 0.97 |
| NZAC153 | 55 | 56 | 1 | 0.51 |
| NZAC153 | 60 | 61 | 1 | 0.33 |
| NZAC154 | 32 | 33 | 1 | 0.31 |
| NZAC154 | 34 | 35 | 1 | 0.66 |
| NZAC154 | 35 | 36 | 1 | 2.14 |
| NZAC154 | 37 | 38 | 1 | 0.4 |
| NZAC154 | 39 | 40 | 1 | 1.16 |
| NZAC154 | 45 | 46 | 1 | 1.1 |
| NZAC155 | 31 | 32 | 1 | 0.82 |
| NZAC155 | 40 | 41 | 1 | 0.66 |
| NZAC155 | 49 | 50 | 1 | 1.94 |
| NZAC155 | 50 | 51 | 1 | 1 |
| NZAC155 | 53 | 54 | 1 | 0.35 |
| NZAC156 | 32 | 33 | 1 | 0.41 |
| NZAC156 | 42 | 43 | 1 | 1.88 |
| NZAC156 | 43 | 44 | 1 | 0.45 |
| NZAC156 | 45 | 46 | 1 | 6.43 |
| NZAC156 | 46 | 47 | 1 | 1.74 |
| NZAC156 | 48 | 49 | 1 | 0.42 |
| NZAC157 | 33 | 34 | 1 | 0.35 |
| NZAC157 | 34 | 35 | 1 | 1.05 |
| NZAC157 | 35 | 36 | 1 | 0.7 |
| NZAC157 | 44 | 45 | 1 | 2.34 |
| NZAC157 | 45 | 46 | 1 | 0.3 |
| JORC INFORMATION | ||||
| Section 1: Sampling Techniques and Data | ||||
| (Criteria in this section applies to all succeeding sections) | ||||
| Criteria | JORC Code explanation | Commentary | ||
| Sampling techniques | Nature and quality of sampling (eg cut channels, random chips, or specific specialised industry standard measurement tools appropriate to the minerals under investigation, such as down hole gamma sondes, or handheld XRF instruments, etc). These examples sh ould not be taken as limiting the broad meaning of sampling. Include reference to measures taken to ensure sample representivity and the appropriate calibration of any measurement tools or systems used. Aspects of the determination of mineralisation that a re Material to the Public Report. In cases where 'industry standard' work has been done this would be relatively simple (eg 'reverse circulation drilling was used to obtain 1 m samples from which 3 kg was pulverised to produce a 30 g charge for fire assay' ). In other cases, more explanation may be required, such as where there is coarse gold that has inherent sampling problems. Unusual commodities or mineralisation types (eg submarine nodules) may warrant disclosure of detailed information. | Every metre drilled was placed on the ground. 6m composites were collected using a scoop method of sampling the coarse reject sample for the first 24m. 1m sampling using a rifle splitter was trialed on the clays, from 24m, with sampling deemed to create a high degree risk of smearing. The clays are not wet, but have a damp characteristic. A large metal scoop was used to sample between 70-90% of material from each metre drilled, to total between 2-3kg samples. Standard reference material, sample duplicates a nd blanks, were undertaken at 25m sample intervals. Samples were sent to the laboratory for crushing, splitting and analysis. Analysis was undertaken by Jinnings laboratories (Kalgoorlie) for gold assay by 50g fire assay. | ||
| Drill sample recovery | Method of recording and assessing core and chip sample recoveries and results assessed. Measures taken to maximise sample recovery and ensure representative nature of the samples. Whether a relationship exists between sample recovery and grade and whether sample bias may have occurred due to preferential loss/gain of fine/coarse material. | Dri ll recovery was routinely recorded via estimation of the comparative percentage of the volume of the sample bag by the company geologist. The sample recovery was deemed excellent for representative assays. The cyclone was cleaned or checked every 6m. | ||
| Logging | Whether core and chip samples have been geologically and geotechnically logged to a level of detail to support appropriate Mineral Resource estimation, mining studies and metallurgical studies. Whether logging is qualitative or quantitative in natu re. Core (or costean, channel, etc) photography. The total length and percentage of the relevant intersections logged. | All holes have been geologically logged for lithology, mineralisation and weathering. As well as whether dry, damp or wet. Logging is qua ntitative for presence of quartz veins. All other logging is qualitative. A brief description of each drilling sample was recorded and a permanent record has been collected and stored in chip trays for reference. | ||
| Sub-sampling techniques and sample preparation | If core, whether cut or sawn and whether quarter, half or all core taken. If non-core, whether riffled, tube sampled, rotary split, etc and whether sampled wet or dry. For all sample types, the nature, quality and appropriateness of the sample preparation technique. Quality control procedures adopted for all sub-sampling stages to maximise representivity of samples. Measures taken to ensure that the sampling is represent ative of the in-situ material collected, including for instance results for field duplicate/second-half sampling. Whether sample sizes are appropriate to the grain size of the material being sampled. | 1m sampling using a rifle splitter was trialed on the cl ays, from 24m, with sampling deemed to create a high degree risk of smearing. The clays are not wet, but have a damp characteristic. A large metal scoop was used to sample between 70-90% of material from each metre drilled, to total between 2-3kg samples. Standard reference material, sample duplicates and blanks, were undertaken at 25m sample intervals. Samples were sent to the laboratory for crushing, splitting and analysis. The use of fire assay with 50g charge for all AC drilling provides a level of conf idence in the assay database. The sampling and assaying are considered representative of the in-situ material. The sample size of 2-3 kilograms is appropriate and representative of the grain size and mineralisation style of the deposit. | ||
| Quality of assay data and laboratory tests | The nature, quality and appropriateness of the assaying and laboratory procedures used and whether the technique is considered partial or total. For geophysical tools, spectrometers, handheld XRF instruments, etc, the parameters used in determining the analysis including instrument make and model, reading times, calibrations factors applied and their derivation, etc. Nature of quality control procedures adopted (eg standards, blanks, duplicates, external laboratory checks) and whether acceptable levels of accuracy (ie lack of bias) and precision have been established. | Jinnings (Kalgoorlie) were used for all analysis of drill samples submitted by Riversgold. The laboratory techniques below are for all samples submitt ed to Jinnings and are considered appropriate for the style of mineralisation defined within the Northern Zone Project area: Samples above 3Kg were riffle split. Pulverise to 95% passing 75 microns 50-gram Fire Assay (FA50A) - Au Duplicates, Standards and Blanks were used for external laboratory checks by RGL | ||
| Orientation of data in relation to geological structure | Whether the orientation of sampling achieves unbiased sampling of possible structures and the extent to which this is known, considering the deposit type. If the relationship between the drilling orientation and the orientation of key mineralised structure s is considered to have introduced a sampling bias, this should be assessed and reported if material. | Based on logging of diamond core the drill holes appear to be orientated perpendicular to strike and dip of the main mineralised structures. An interprete d fault though the middle of the mineralisation may have caused some displacement. | ||
Section 2: Reporting of Exploration Results
(Criteria listed in the preceding section also apply to this section)
| Criteria | JORC Code explanation | Commentary |
| Mineral tenement and land tenure status | Type, reference name/number, location and ownership including agreements or material issues with third parties such as joint ventures, partnerships, overriding royalties, native title interests, historical sites, wilderness or national park and environment al settings. The security of the tenure held at the time of reporting along with any known impediments to obtaining a licence to operate in the area. | The Northern Zone Project is comprised of one granted prospecting licence (P25/2651) which covers an area of 82 hectares, and is held in the name of Riversgold (Australia) Pty Ltd 80/100, Oracle Gold (WA) Pty Ltd 20/100. The JV documents are to be formalised by December 2025. Oracle will be required to contribute pro-rata or dilute. |
| Exploration done by other parties | Acknowledgment and appraisal of exploration by other parties. | The majority of previous exploration in the area was by Northern Mining during 2007 to 2012 under the Blair North project, multiple small resource areas were identified at the George's Reward area to the south of P25/2651. Numerous gold intersections were recorded. |
| Geology | Deposit type, geological setting and style of mineralisation. | The deposit sought is (Intrusion Related Gold System (IRGS) style of mineral deposit. Northern Zone is hosted within a porphyry unit (Tonalite- Trondhjemite Intrusion, TTI), with high background gold and horizontal gold mineralised units within the TTI unit. The Northern Zone Project sits within the Canon Shear or fault zone, with further d rilling required to define the limits of mineralisation identified to date. |
| Drill hole Information | A summary of all information material to the understanding of the exploration results including a tabulation of the following information for all Material drill holes: easting and northing of the drill hole collar elevation or RL (Reduced Level - elevation above sea level in metres) of the drill hole collar dip and azimuth of the hole down hole length and interception depth hole length. If the exclusion of this information is justified on the basis that the information is not Material and this exclusion doe s not detract from the understanding of the report, the Competent Person should clearly explain why this is the case. | Refer to Tables and Figures within the body of the release. |
| Data aggregation methods | In reporting Exploration Results, weighting averaging techniques, maximum and/or minimum grade truncations (eg cutting of high grades) and cut-off grades are usually Material and should be stated. Where aggregate intercepts incorporate short lengths of hig h-grade results and longer lengths of low-grade results, the procedure used for such aggregation should be stated and some typical examples of such aggregations should be shown in detail. The assumptions used for any reporting of metal equivalent values should be clearly stated. | Intersections are weighted average grades based on a 0.001 g/t Au cut-off with unlimited waste zones but with a targeted grade of 0.4-0.6g/t Au. |
| Relationship between mineralisation widths and intercept lengths | These relationships are particularly important in the reporting of Exploration Results. If the geometry of the mineralisation with respect to the drill hole angle is known, its nature should be reported. If it is not known and only the down hole lengths are reported, there should be a clear statement to this effect (eg 'down hole length, true width not known'). | The diamond drilling program in 2023 confirmed the apparent widths of mineralisatio n as being perpendicular to foliation and veining. Step out RC drilling to be the same as the diamond drilling. Mineralisation has been determined from structural logging to be horizontal and vertical drilling is therefore true width drilling. |
| Balanced reporting | Where comprehensive reporting of all Exploration Results is not practicable, representative reporting of both low and high grades and/or widths should be practiced to avoid misleading reporting of Exploration Results. | The reporting of exploration results i s considered balanced by the competent person. |
| Further work | The nature and scale of planned further work (eg tests for lateral extensions or depth extensions or large-scale step-out drilling). Diagrams clearly highlighting the areas of possible extensions, including the main geological interpretations and future dr illing areas, provided this information is not commercially sensitive. | · Follow up phases of drilling to further test strike to be undertaken. · Complete a maiden MRE |
[1] Announcement dated 30 September 2025 - " Northern Zone Gold Project Co-operation Agreement"
Cleaned text: letterheads, contacts and legal notices removed. View the original announcement ↗ · Company filings. Not investment advice.