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Thor Explorations Announces High Grade Mineralization Intersected at Segilola

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Thor Explorations Announces High Grade Mineralization Intersected at Segilola

 

 

 

 

 

Thor Explorations Ltd (TSX-V: THX) (AIM: THX) is a West African-focused minerals exploration and mining Company, that is currently producing gold from its wholly owned Segilola Gold Mine in Nigeria and is advancing its exploration properties in Senegal and Côte d’Ivoire, including the Douta Gold Project in Senegal which is being advanced towards development.

 

Thor is pleased to announce further positive results from an advanced diamond drilling program at the Segilola Gold Mine, which is targeting potential mineralisation beneath the current open pit with the objective of extending the Segilola mine life.

 

Highlights include:

  • Drillhole SNMDD060 – 4.2 metres at 12.4 grammes per tonne of gold from 295m
  • Drillhole SNMDD061 – 2m at 17.86g/tAu from 195.5m
  • Drillhole SNMDD061 – 4.5m at 3.71g/tAu from 222m
  • Drillhole SNMDD059 – 5.9m at 6.0g/tAu from 291m

 

Segun Lawson, President & CEO, stated:

 

“We are delighted to report continued positive progress from our deep diamond drilling program at Segilola, which has generated several significant gold intersections below the current open pit design. This program, which continues to evolve, has been designed to further explore the along-strike down-plunge trend of the deposit.

 

“One of our key corporate priorities as a Company is to extend the Segilola mine life, and the ongoing drilling program has been designed to do this by both upgrading parts of the remaining inferred resource and increasing the size of the overall underground resource to support a longer life-of-mine at Segilola.

 

“We are encouraged by these results, which demonstrate continued high grade mineable mineralisation beneath the pit and look forward to testing these targets, which remain open. We will also review the options of recovering these additional ounces by deepening the Segilola open pit. We have increased our exploration budget to $11.5m for the year and also look forward to commissioning the Company’s drilling rigs, which will enable a faster, more flexible drilling program.”

 

Introduction

 

The Segilola Gold Project is located 190 kilometres northeast of Lagos and covers a large area of the Pan African Ilesha Schist Belt. The deposit is located near the north-east trending Ifewara Shear Zone that extends for several hundred kilometres through Nigeria.

 

Gold mineralisation is developed within an overturned sequence of metamorphosed, strongly foliated meta-sediments at the boundary between the basement biotite gneiss and calc-silicate and mylonitic biotite-garnet schists. A unit of massive to foliated granodiorite conformably intrudes the sequence between the quartzites and basement gneisses. Gold mineralisation is developed with steep west-dipping parallel lodes that comprise late-stage silica-altered zones that are commonly referred to as “veins” and which are restricted to the meta-sedimentary unit.

 

Drilling Results

 

The Segilola ore body is characterised by a pronounced southerly plunging geometry. A diamond drilling program that commenced in 2024 is continuing to test the continuity of mineralisation following the down-plunge trend to the south. To date, a total of 60 holes have been completed for 16,520m. Drill sampling is being carried out using NQ diamond core. Half core samples are analysed by fire assay at the Company’s laboratory which was established by MSA Laboratories at the Segilola Mine Site. The final assay results are an average of the primary assay result (Au1) and two additional fire assays of the same pulp (AuR1 and AuR2). Further QAQC work is being carried out by MSA Laboratories. Significant intersections are calculated by reporting above a lower cut off grade of 0.5g/tAu over a minimum interval length of 0.5m with a maximum internal dilution of 1m allowed. Significant results that exceed 3 gramme-metres (average grade x true width) are shown in

 

Table 1. All results are tabled in Appendix 1. Drillhole locations are shown in Figure 1.

 

Hole ID East North RL Depth (m) Dip Azi-muth From (m) To (m) Interval (m) Grade (g/tAu) True Width (m)
SNMDD029 4083 11757 328 270 -67 90 223.4 226.0 2.6 1.87 2.1
SNMDD031 4272 10304 292 63 -61 89 47.8 49.6 1.8 3.13 1.5
SNMDD032 4289 10358 307 49 -60 90 33.1 35.0 1.9 3.22 1.6
SNMDD038 4040 11710 346 305 -66 90 274.0 276.9 2.9 1.90 2.4
SNMDD045 4067 10806 357 326 -65 91 305.2 310.0 4.8 1.17 3.9
SNMDD048 4047 10866 359 320 -55 91 300.0 301.9 1.9 2.00 1.7
SNMDD053A 4078 11755 328 290 -74 91 260.7 262.5 1.8 5.41 1.3
SNMDD056 4083 10769 355 318 -66 91 291.8 295.4 3.55 1.50 2.9
SNMDD057 4049 10859 359 305 -53 91 286.5 289.2 2.7 2.05 2.5
SNMDD058 4091 11791 326 242 -65 91 208.5 211.0 2.5 1.40 2.1
SNMDD059 4083 10774 355 316 -66 91 291.0 296.9 5.9 6.00 4.7
SNMDD060 4044 10883 360 302 -49 91 284.0 287.2 3.15 1.14 3.0
SNMDD060 294.8 299.0 4.2 12.48 3.9
SNMDD061 4114 10725 344 245 -54 91 195.5 197.5 2.0 17.86 1.8
SNMDD061 222.1 226.6 4.46 3.71 4.1

 

Table 1: Significant Drillhole Intersections


( >3gram-metres, 0.5g/tAu cut off, Min. length 0.5m, Max. internal dilution 1m)

 

Drilling has focussed on two main areas: the Northern Zone, where the targeted mineralisation is confined to a discrete, west-dipping, 100m long shoot with a pronounced steep southerly plunge, and the Southern Zone where mineralisation appears to have a shallow-plunging flat geometry in longitudinal section view (Figure 2).

 

The Southern Zone is characterised by four stacked parallel lodes that dip at about 600 towards the west. In this area the western-most, or hanging wall, lode, which is referred to as the 400 Lode, is typically 0.5 to 3m thick and notable for elevated grades. For example, 400 Lode intersections include 2m grading 17.86g/tAu in SNMDD061.

 

The main mineralised structure in the Southern Zone is referred to as the 300 Lode and is typically more continuous with true widths of 3-5m. Significant intersections of the 300 Lode from the current drilling include 5.9m grading 6.0g/tAu in drillhole SNMDD059 and 4.2m grading 12.48g/tAu in drillhole SNMDD060.

 

Figure 1: Drillhole Location Map and Cross Sections

 

Figure 2: Longitudinal Section Showing Gramme-Metre Contours and Drill Intercepts

 

Next Steps

 

The preliminary economic assessment completed in 2018 included an “underground” indicated resource of 28,000 ounces grading 9.4g/tAu, together with an inferred resource of 90,000 ounces grading 7.9g/tAu.

 

Given the fundamental change in the project economics brought about by the current record gold price, the Company will review the option of further extending the open pit as opposed to transitioning, in the short term, to an underground operation.

 

The current program is targeting both upgrading the inferred resource below the pit and increasing the overall size of the resource with the objective of increasing the life of mine at Segilola.

 

Ongoing work streams will also incorporate geotechnical and metallurgical studies.

 

Qualified Person

The above information has been prepared under the supervision of Alfred Gillman (Fellow AusIMM, Chartered Professional), who is designated as a “qualified person” under National Instrument 43-101 and the AIM Rules and has reviewed and approves the content of this news release. He has also reviewed QA/QC, sampling, analytical and test data underlying the information.

 

Appendix 1: Drillhole Intersections
(0.5g/tAu cut off, Min. length 0.5m, Max. internal dilution 1m)

 

Hole ID East North RL Depth (m) Dip Azi-muth From (m) To (m) Interval (m) Grade (g/tAu) True Width (m)
SNMDD029 4083 11757 328 270 -67 90 223.4 226.0 2.6 1.87 2.1
SNMDD031 4272 10304 292 63 -61 89 24.0 25.0 1 1.08 0.9
SNMDD031 47.8 49.6 1.8 3.13 1.5
SNMDD032 4289 10358 307 49 -60 90 29.3 30.0 0.7 1.62 0.6
SNMDD032 33.1 35.0 1.9 3.22 1.6
SNMDD033 4073 11848 328 233 -56 90 207.0 208.2 1.15 1.68 1.1
SNMDD034 4239 10258 299 97 -60 90 79.6 81.4 1.84 1.78 1.6
SNMDD035 4205 10301 300 127 -58 90 90.1 90.9 0.8 2.11 0.7
SNMDD036 4206 10266 300 125 -60 90 119.0 120.0 1 1.69 0.9
SNMDD037 4122 11886 318 200 -69 90 173.0 175.5 2.5 0.84 2.0
SNMDD038 4040 11710 346 305 -66 90 274.0 276.9 2.9 1.90 2.4
SNMDD039 4091 11730 327 228 -55 90 nsr
SNMDD040 4077 12137 337 251 -66 91 nsr
SNMDD041 4047 10825 358 374 -64 49 nsr
SNMDD042 3900 9550 292 627 -65 94 nsr
SNMDD043 4043 11676 345 389 -77 91 359.4 360.5 1.1 3.00 0.8
SNMDD044 3981 10854 359 572 -77 91 nsr
SNMDD045 4067 10806 357 326 -65 91 305.2 310.0 4.8 1.17 3.9
SNMDD046 4053 9465 286 292 -48 91 nsr
SNMDD047 4047 11665 345 326 -68 91 nsr
SNMDD048 4047 10866 359 320 -55 91 296.0 298.0 2 0.89 1.8
SNMDD048 300.0 301.9 1.9 2.00 1.7
SNMDD049 4038 10988 363 326 -60 91 279.3 280.2 0.9 0.53 0.8
SNMDD050 4032 10944 362 347 -63 91 292.7 293.8 1.1 0.61 0.9
SNMDD050 297.0 297.7 0.7 0.79 0.6
SNMDD050 301.3 302.0 0.72 2.59 0.6
SNMDD051 4155 10648 320 221 -69 91 201.0 202.0 1 1.07 0.8
SNMDD052 4154 10648 320 301 -83 91 nsr
SNMDD053A 4078 11755 328 290 -74 91 260.7 262.5 1.8 5.41 1.3
SNMDD054 3992 11102 367 351 -55 91 327.4 328.0 0.6 2.62 0.5
SNMDD055 4105 10723 343 272 -65 91 229.9 231.0 1.1 1.82 0.9
SNMDD055 251.7 253.0 1.3 1.54 1.1
SNMDD055 268.1 269.0 0.9 0.85 0.7
SNMDD056 4083 10769 355 318 -66 91 291.8 295.4 3.55 1.50 2.9
SNMDD057 4049 10859 359 305 -53 91 286.5 289.2 2.7 2.05 2.5
SNMDD058 4091 11791 326 242 -65 91 208.5 211.0 2.5 1.40 2.1
SNMDD059 4083 10774 355 316 -66 91 291.0 296.9 5.9 6.00 4.7
SNMDD060 4044 10883 360 302 -49 91 284.0 287.2 3.15 1.14 3.0
SNMDD060 294.8 299.0 4.2 12.48 3.9
SNMDD061 4114 10725 344 245 -54 91 195.5 197.5 2 17.86 1.8
SNMDD061 222.1 226.6 4.46 3.71 4.1
SNMDD061 230.0 231.1 1.05 2.24 1.0

 

 

 

Appendix 2: Longitudinal Section Showing Gramme-Metre Contours and Drill Intercepts

 

Posted August 18, 2025

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