Wrap Text
Resource Optimisation Drilling Extends Significant Copper Mineralisation at Flat Mine East, Okiep Copper Project
Orion Minerals Limited
Incorporated in the Commonwealth of Australia
Australian Company Number 098 939 274
ASX share code: ORN
JSE share code: ORN
ISIN: AU000000ORN1
Resource Optimisation Drilling Extends Significant Copper Mineralisation at Flat Mine East, Okiep Copper
Project
Significant new zone in recent diamond drilling confirms down-dip extension of cornerstone deposit
- Recently completed resource optimisation drill hole OFMED157 at Flat Mine East (FME) has intersected
a 7.88m zone of significant visible copper sulphide mineralisation from 311.26m down-hole (Table 2).
- The OFMED157 intersection is located 36m down-dip from a previously reported high-grade copper
intersection in hole OFMED154, which returned:
o 15.00m at 4.80% Cu from 248.00m; and
o 9.27m at 3.01% Cu from 185.00m, within:
o 78.00m at 1.57% Cu from 185.00m.
- Significantly, OFMED157 is located 100m along strike from a previously reported high-grade copper
intersection in hole OFMED153, which intersected:
o 49.35m at 5.05% Cu from 231.00m, including:
o 21.66m at 9.41% Cu from 258.69m.
- The intersection in OFMED157 is characterised by disseminated, blebby to massive and semi-massive
vein-type bornite-chalcopyrite mineralisation in norite (Table 2).
- The new intersection confirms that the highly prospective mafic norite and previously confirmed
significant copper mineralisation continues down-dip beyond the current Indicated Resource
envelope.
- Assay results have also been received for resource optimisation drill hole OFMND244 at Flat Mine North
(FMN), including:
o 21.34m at 1.55% Cu from 147.72m in OFMND244.
Orion's Managing Director and CEO, Tony Lennox, commented:
"Our ongoing drilling at the Okiep Project continues to demonstrate strong resource growth potential, particularly
down-dip of previously intersected wide, high-grade copper mineralisation. Importantly, the newly intersected
mineralisation remains open down-dip, which Orion is targeting with the next drill hole at FME, OFMED158.
"While we remain cautious ahead of laboratory assays, these early observations provide further encouragement
regarding the continuity and scale of the mineralised system beyond the current resource envelope. These latest
results reinforce the quality and growth potential of the Flat Mines area as a cornerstone of Orion's broader Okiep
development strategy. We look forward to reporting assay results in approximately three weeks."
Orion Minerals Limited (ASX/JSE: ORN) (Orion or Company) is pleased to advise that the first resource-optimisation
drill hole completed at the Okiep Coper Project (OCP) Flat Mine East (FME) prospect, located in the Northern
Cape of South Africa, has intersected a significant zone of visible copper sulphide mineralisation down-dip from
a wide zone of high-grade copper mineralisation intersected last year.
The OFMED157 drill hole was designed to test an open zone in the block model, 36m down-dip of previously
reported high-grade mineralisation in OFMED154 (refer ASX/JSE release 24 June 2024).
The latest results add further momentum to Orion's development strategy for the OCP, building on the
outstanding outcomes of the recently completed confirmation drilling program, which confirmed the geology
and endowment of the Flat Mines area (refer ASX/JSE releases 22 April 2024, 24 June 2024, 9 July 2024 and
3 September 2024).
The OCP ground holdings, which cover an area of 703km², encompass most of the Okiep copper mining district,
where a total of 105Mt is reported to have been mined over the past 100 years (refer ASX/JSE release 21 May
2021). Of the 105Mt mined, some 77Mt was mined on OCP prospecting and mining rights. The Flat Mines area
and the current drilling program fall entirely within executed Mining Right NC10150MR.
The Mining Right is surrounded by granted prospecting rights, NC12755PR and NC12848PR (refer ASX/JSE release
13 August 2024), which host several exciting historically drilled prospects and historical mines that offer the
potential for additional mineral resources through future drilling.
The results reported in this announcement continue to demonstrate the potential to extend or in-fill partially drilled
zones of high-grade mineralisation in the currently reported Mineral Resource. Furthermore, a structural control
model for the high-grade mineralisation is being developed to enable targeted follow-up drilling where the mafic
unit is affected.
Orion reported an updated Mineral Resource for the Flat Mines deposits in March 2025, underpinned by historical
drilling results (refer ASX/JSE release 28 March 2025) of 10.0Mt at 1.3% Cu (Table 1)1.
Table 1: Mineral Resource Statement for Flat Mine North, Flat Mine East, Flat Mine South and Flat Mine Nababeep.
Measured Indicated Inferred
Mine / Prospect
Tonnes % Cu t Cu Tonnes % Cu t Cu Tonnes % Cu t Cu
Flat Mine North 440,000 1.13 5,000 940,000 1.42 13,000 200,000 1.50 4,000
Flat Mine East - - - 3,400,000 1.37 47,000 1,000,000 1.00 9,000
Flat Mine South - - - 2,600,000 1.35 35,000 800,000 1.60 13,000
Flat Mine Nababeep - - - 300,000 1.07 3000 300,000 1.00 3000
Total* 440,000 1.13 5,000 7,240,000 1.30 98,000 2,300,000 1.30 29,000
*Numbers may not add up due to rounding in accordance with the JORC Code (2012) guidance.
Resources are reported at a 0.7% Cu cut-off grade.
Flat Mine East (FME) and Flat Mine North (FMN) Resource Optimisation Drilling Program
The FME drill hole, OFMED157, targeting down-dip extensions of high-grade mineralisation beyond the margins
of the current Indicated Mineral Resource, was successfully completed and intersected a zone of significant
visible copper sulphide mineralisation over 7.88m from 311.29m down-hole. It anticipated that assay results should
be released in approximately three weeks.
The intercept suggests the down-dip continuity of the FME lower zone of the previously intersected and reported
significant mineralisation in OFMED154, which returned 15.00m at 4.80% Cu and 9.27m at 3.01% Cu within 78.00m
at 1.57% Cu (refer ASX/JSE release 24 June 2024). Significantly, OFMED154 is located 50m along strike to the east
from a previously reported high-grade copper intersection in hole OFMED153 with 49.35m at 5.05% Cu including
21.66m at 9.41% Cu (refer ASX/JSE release 24 June 2024).
1 Mineral Resource reported in accordance with the JORC Code (2012) in ASX release of 28 March 2025: "Orion Updates Mineral Resources
at Okiep Copper Project" available to the public on https://www.orionminerals.com.au/asx-jse-announcements/. Orion confirms it
is not aware of any new information or data that materially affects the information included above. The Company confirms that all material
assumptions and technical parameters underpinning the estimates in the original release continue to apply and have not materially
changed. Orion confirms that the form and context in which the Competent Person's findings are presented have not been materially
modified.
Table 2: Visual mineralisation estimates - drill hole OFMED157.
From To Width Slf1 Slf2 Total %
Hole ID (m) (m) (m) Slf1 pc Texture Slf2 pc Texture Sulphide Lithology
OFMED157 311.26 312.18 0.92 bornite 20.00 blb chalcopyrite 5.00 blb 25.00 Norite
OFMED157 312.18 313.84 1.66 bornite 0.50 pat chalcopyrite 0.50 pat 1.00 Anorthosite
OFMED157 313.84 316.00 2.16 bornite 10.00 dis chalcopyrite 4.00 dis 14.00 Norite
OFMED157 316.00 317.08 1.08 bornite 10.00 blb chalcopyrite 5.00 dis 15.00 Norite
OFMED157 317.08 317.45 0.37 bornite 30.00 vnd chalcopyrite 20.00 vnd 50.00 Norite
OFMED157 317.45 318.17 0.72 bornite 30.00 blb chalcopyrite 20.00 blb 50.00 Norite
OFMED157 318.17 318.53 0.36 bornite 30.00 mas chalcopyrite 20.00 mas 50.00 Norite
OFMED157 318.53 318.85 0.32 bornite 3.00 dis chalcopyrite 3.00 dis 6.00 Norite
OFMED157 318.85 319.00 0.15 bornite 5.00 mas chalcopyrite 90.00 mas 95.00 Norite
OFMED157 319.00 319.17 0.17 bornite 5.00 dis chalcopyrite 3.00 dis 8.00 Norite
Key: blb – blebby, dis – disseminated, mas – massive, pat – patchy, vnd - veined
Note: Visual estimates of mineral abundance should never be considered a proxy or substitute for laboratory analyses
where concentrations or grades are the factor of principal economic interest. Visual estimates also potentially provide
no information regarding impurities or deleterious physical properties relevant to valuations.
These drill results demonstrate the potential to expand the known mineralisation by targeting additional gaps in
the resource model for future resource extension. The intersection in OFMED157 displays bornite and chalcopyrite
mineralisation ranging from disseminations, blebby to massive and semi-massive vein types (Figure 1).
The norite in OFMED157 is narrower due to interfingered granitic units (Figure 5). Drill core from OFMED157 has
been sampled and submitted to ALS laboratory for analysis and results are pending. It is anticipated that assay
results should be released in approximately three weeks.
Figure 1: OFMED157 drill core from 313.75m to 319.25m (refer to full reporting in Table 2).
Chalcopyrite and bornite sulphide mineralisation is observed from a drill depth of 311.26m to 319.25m.
Orion has also completed two holes at FMN, OFMND244 and OFMND245, as part of a resource optimisation
drilling campaign along with holes OFMND246, OFMND247 and OFMND248, as part of a resource extension
probe.
Drilling focused on areas of the Inferred Resource where an increase in drill density would provide the required
information for potential resource classification upgrade.
To date, assays have been received for OFMND244, which returned 21.34m at 1.55% Cu from 147.72m and
OFMND245, which returned 4.45m at 1.29% Cu from 169m and 7m at 0.88% Cu from 176m and no significant
mineralisation for OFMND246. Assays are pending for OFMND247 and OFMND248.
Figure 2: Cross-section view of OFMND244.
Figure 3: Cross-section view of OFMND245.
Figure 4: Plan showing historical and current (green-labelled) Orion drill holes, interpreted mineralisation envelopes and
extent of the Mining Right.
Table 3: Summary table of assay drill results to date for FMN prospect (as analysed by ICP-MS, minimum cut-off of 0.7% Cu
with maximum 3m consecutive internal waste allowed). Intersections and inclusions with grades mostly above 1% Cu are
tabulated. The data was not capped. Note: widths are down-hole drill widths.
Mineralisation
Hole ID
Notes From (m) To (m) Interval (m) % Cu
147.72 169.06 21.34 1.55
OFMND244 including 147.72 155.56 7.84 2.19
including 164.00 169.06 5.06 1.95
169.00 173.45 4.45 1.29
OFMND245
176.00 183.00 7.00 0.88
Figure 5: Cross-section of OFMED157, with adjacent holes.
For and on behalf of the Board.
Tony Lennox
Managing Director and CEO
12 May 2026
ENQUIRIES
Investors Media JSE Sponsor
Avishkar Nagaser Nicholas Read Monique Martinez
Executive: Corporate Communications Read Corporate, Australia Merchantec Capital
and Investor Relations
T: +61 (0) 3 8080 7170 T: +61 (0) 419 929 046 T: +27 (0) 11 325 6363
E: info@orionminerals.com.au E: nicholas@readcorporate.com.au E: monique.martinez@merchantec.com
Competent Persons Statement
The information in this report that relates to Exploration Results is based on information compiled by Mr John Paul Hunt
(Pr.Sci.Nat.), a Competent Person who is a member of the South African Council for Natural Scientific Professionals, a
Recognised Professional Organisation (RPO). Mr Hunt is a full-time employee of Orion. Mr Hunt has sufficient experience that
is relevant to the style of mineralisation and type of deposit under consideration and to the activity being undertaken to
qualify as a Competent Person as defined in the 2012 Edition of the JORC Code. Mr Hunt consents to the inclusion in this
announcement of the matters based on his information in the form and context in which it appears.
Reference to Previous Reports
Exploration Results from previous drilling at Flat Mines area were reported in ASX/JSE releases of 22 April 2024: "Spectacular
High-Grade Copper Intercept at Okiep Project", 24 June 2024: "More Outstanding Hits at Okiep Copper Project", 9 July 2024:
"Okiep Copper Project Continues to Deliver" and 3 September 2024: "Okiep Confirmation Drilling Successfully Completed",
and Mineral Resources at Flat Mines are reported in ASX release of 28 March 2025: "Orion Updates Mineral Resources at Okiep
Copper Project", all available to the public on https://www.orionminerals.com.au/asx-jse-announcements/. Orion confirms
that it is not aware of any new information or data that materially affects the information included in the original market
announcements. Orion confirms that all material assumptions and technical parameters underpinning the Mineral Resource
estimates in the original release continue to apply and have not materially changed. Orion confirms that the form and
context in which the Competent Person's findings are presented have not been materially modified from the original market
announcements.
Disclaimer
This release may include forward-looking statements. Such forward-looking statements may include, among other things,
statements regarding targets, estimates and assumptions in respect of metal production and prices, operating costs and
results, capital expenditures, mineral reserves and mineral resources and anticipated grades and recovery rates, and are or
may be based on assumptions and estimates related to future technical, economic, market, political, social and other
conditions. These forward-looking statements are based on management's expectations and beliefs concerning future
events. Forward-looking statements inherently involve subjective judgement and analysis and are necessarily subject to risks,
uncertainties and other factors, many of which are outside the control of Orion. Actual results and developments may vary
materially from those expressed in this release. Given these uncertainties, readers are cautioned not to place undue reliance
on such forward-looking statements. Orion makes no undertaking to subsequently update or revise the forward-looking
statements made in this release to reflect events or circumstances after the date of this release. All information in respect of
Exploration Results and other technical information should be read in conjunction with Competent Person Statements in this
release (where applicable). To the maximum extent permitted by law, Orion and any of its related bodies corporate and
affiliates and their officers, employees, agents, associates and advisers:
• disclaim any obligations or undertaking to release any updates or revisions to the information to reflect any change in
expectations or assumptions;
• do not make any representation or warranty, express or implied, as to the accuracy, reliability or completeness of the
information in this release, or likelihood of fulfilment of any forward-looking statement or any event or results expressed
or implied in any forward-looking statement; and
• disclaim all responsibility and liability for these forward-looking statements (including, without limitation, liability for
negligence).
Appendix 1: Drill hole collar information and assay results from drill program at Flat Mine North and Flat Mine East
Table 4: Drill hole collar information for FMN and FME prospects. Coordinates in LO17 Hartebeesthoek 94.
Prospect Hole ID Easting Northing RL Azimuth Dip Depth (m) Comment
FMN OFMND244 -75919.82 3268275.00 816.33 240 -80 200.00 Completed
FMN OFMND245 -75925.46 3268228.85 818.69 230 -83 210.00 Completed
FMN OFMND246 -76015.49 3268297.29 819.62 180 -70 162.51 Completed
FMN OFMND247 -75924.17 3268227.67 818.58 290 -70 210.00 Completed
FMN OFMND248 -76092.38 3268052.30 839.25 240 -71 231.90 Completed
FME OFMED157 -78607.46 3270337.03 977.85 185 -66 340.25 Completed
Table 5: OFMND244 drill assay results.
Hole ID From (m) To (m) % Cu Hole ID From (m) To (m) % Cu
OFMND244 133.56 134.56 0.2140 OFMND244 153.00 154.00 3.5900
OFMND244 134.56 135.56 0.0576 OFMND244 154.00 155.00 3.5400
OFMND244 135.56 136.56 0.0217 OFMND244 155.00 155.56 2.9100
OFMND244 136.56 137.22 0.0578 OFMND244 155.56 156.78 0.5130
OFMND244 137.22 138.35 0.0454 OFMND244 156.78 158.00 0.7130
OFMND244 138.35 139.00 0.1645 OFMND244 158.00 159.00 0.9270
OFMND244 139.00 140.00 0.1160 OFMND244 159.00 160.00 1.2300
OFMND244 140.00 141.00 0.1265 OFMND244 160.00 161.00 0.7300
OFMND244 141.00 142.00 0.1910 OFMND244 161.00 162.00 0.8170
OFMND244 142.00 142.74 0.2170 OFMND244 162.00 163.00 0.4660
OFMND244 142.74 143.77 1.6850 OFMND244 163.00 164.00 0.4920
OFMND244 143.77 144.88 0.3470 OFMND244 164.00 165.00 0.7900
OFMND244 144.88 146.00 0.2990 OFMND244 165.00 166.00 0.8520
OFMND244 146.00 147.00 0.2880 OFMND244 166.00 167.00 1.2000
OFMND244 147.00 147.72 0.3310 OFMND244 167.00 168.00 3.8400
OFMND244 147.72 148.23 0.9070 OFMND244 168.00 169.06 3.0200
OFMND244 148.23 149.00 1.1950 OFMND244 169.06 170.00 0.0348
OFMND244 149.00 150.00 1.5300 OFMND244 170.00 171.00 0.0018
OFMND244 150.00 151.00 1.6300 OFMND244 171.00 172.00 0.0058
OFMND244 151.00 152.00 1.7100 OFMND244 172.00 173.00 0.0026
OFMND244 152.00 153.00 2.1300 OFMND244 173.00 174.00 0.0021
9
Table 6: OFMND245 drill assay results.
Hole ID From (m) To (m) % Cu
OFMND245 169.00 170.00 0.8300
OFMND245 170.00 171.00 0.8290
OFMND245 171.00 172.00 1.5050
OFMND245 172.00 173.00 1.7200
OFMND245 173.00 173.45 1.9200
OFMND245 173.45 174.00 0.2280
OFMND245 174.00 175.00 0.2230
OFMND245 175.00 176.00 0.2830
OFMND245 176.00 177.00 0.8420
OFMND245 177.00 178.00 1.0450
OFMND245 178.00 179.00 0.8180
OFMND245 179.00 180.00 0.6860
OFMND245 180.00 181.00 0.9990
OFMND245 181.00 182.00 0.9080
OFMND245 182.00 183.00 0.8740
OFMND245 183.00 184.00 0.6410
OFMND245 184.00 185.00 0.4660
Table 7: OFMND246 drill assay results.
Hole ID From (m) To (m) % Cu
OFMND246 0.00 0.50 0.0144
OFMND246 3.33 4.62 0.0287
OFMND246 5.98 6.51 0.0406
OFMND246 6.51 7.00 0.1010
OFMND246 7.00 8.00 0.0209
OFMND246 8.00 9.00 0.0352
OFMND246 9.00 9.44 0.0206
OFMND246 9.44 10.00 0.0328
OFMND246 10.00 11.00 0.0432
OFMND246 11.00 12.00 0.1215
OFMND246 12.00 13.00 0.2320
OFMND246 13.00 14.00 0.0648
OFMND246 14.00 15.00 0.0751
OFMND246 15.00 16.00 0.0481
OFMND246 16.00 17.00 0.0455
OFMND246 17.00 18.00 0.0108
OFMND246 18.00 19.00 0.0341
OFMND246 19.00 20.00 0.0217
OFMND246 20.00 21.00 0.0336
OFMND246 21.00 21.67 0.0319
OFMND246 21.67 23.00 0.0006
OFMND246 23.00 24.00 0.0008
OFMND246 24.00 25.00 0.0009
OFMND246 25.00 26.00 0.0022
OFMND246 26.00 27.00 0.0003
Appendix 2: The following tables are provided in accordance with the JORC Code (2012) requirements for the reporting of Exploration Results from the
Okiep Copper Project.
Section 1 Sampling Techniques and Data
(Criteria in this section apply to all succeeding sections.)
Criteria JORC Code explanation Commentary
Sampling techniques • Nature and quality of sampling (e.g. cut channels, random chips, or • Sampling was carried out using industry-standard diamond drilling
specific specialised industry standard measurement tools appropriate to procedures. NQ-size diamond drill cores were longitudinally split in half
the minerals under investigation, such as down hole gamma sondes, or using a diamond core cutting machine. Half core was cut to quarter
handheld XRF instruments, etc). These examples should not be taken as core where field duplicates were taken.
limiting the broad meaning of sampling. • HQ core size was only drilled in the upper weathered portion and no HQ
• Include reference to measures taken to ensure sample representivity core was sampled.
and the appropriate calibration of any measurement tools or systems • One-metre sample length was taken in most cases, with two-metre
used. sample length in poorly mineralised zones and internal waste. Sample
• Aspects of the determination of mineralisation that are Material to the lengths were varied to honour geological and mineralisation
Public Report. boundaries, with a maximum sample size of 2.00m and a minimum
• In cases where 'industry standard' work has been done this would be sample size of 48cm.
relatively simple (eg 'reverse circulation drilling was used to obtain 1 m • Areas of sampling were selected based on visual observations and
samples from which 3 kg was pulverised to produce a 30 g charge for readings from a handheld Niton XL3t 500 XRF analyser (standard
fire assay'). In other cases more explanation may be required, such as analytical range >25 elements from S to U with additional elements Mg, Al,
where there is coarse gold that has inherent sampling problems. Si and P via helium purge).
Unusual commodities or mineralisation types (eg submarine nodules)
may warrant disclosure of detailed information.
Drilling techniques • Drill type (eg core, reverse circulation, open-hole hammer, rotary air • Diamond core drilling was undertaken.
blast, auger, Bangka, sonic, etc) and details (eg core diameter, triple or • HQ and NQ size core was drilled using a standard tube, HQ core size was
standard tube, depth of diamond tails, face-sampling bit or other only drilled in the upper weathered portion of approximately 6m. No Cu
type, whether core is oriented and if so, by what method, etc). mineralisation was visually identified in the HQ core and no HQ core was
sampled.
• Core was oriented using a Reflex ACT III™.
Drill sample recovery • Method of recording and assessing core and chip sample recoveries • Core 'stick-ups' reflecting the depth of the drill hole are recorded at the rig
and results assessed. at the end of each core run. A block with the depth of the hole written
• Measures taken to maximise sample recovery and ensure on it is placed in the core box at the end of each run. At the core yard,
representative nature of the samples. the length of core in the core box is measured for each run. The measured
length of core is subtracted from the length of the run as recorded from
• Whether a relationship exists between sample recovery and grade the stick-up measured at the rig to determine the core loss.
and whether sample bias may have occurred due to preferential • Core recovery was found to be very good (>98%) within the mineralised
loss/gain of fine/coarse material. zone.
• Ground conditions below the weathered zone were very good.
• No obvious relationship exists between sample recovery and grade.
• No core/sample loss or gain which could result in sample bias.
Criteria JORC Code explanation Commentary
Logging • Whether core and chip samples have been geologically and • Core of the entire hole length was geologically logged by qualified
geotechnically logged to a level of detail to support appropriate geologists.
Mineral Resource estimation, mining studies and metallurgical • The core was logged to a level of detail that is sufficient to support
studies. appropriate Mineral Resource estimation, mining studies and
• Whether logging is qualitative or quantitative in nature. Core (or metallurgical studies.
costean, channel, etc) photography. • Geological logging was qualitative and was carried out using a
• The total length and percentage of the relevant intersections logged. standard sheet with a set of standard logging codes to describe
lithology, structure and mineralisation. The logging sheet allows for free-
form description to note any unusual features.
• Geological logs were captured electronically.
• All cores were photographed before sampling.
• Geotechnical logging was completed on non-oriented core. The data
collected per drill run consisted of core recovery, length of core
greater than ten centimetres, longest piece, fracture count, alpha
angles for all joint types and lithological contacts, joint infill types and
their strength as well as nature of joint surface.
Sub-sampling • If core, whether cut or sawn and whether quarter, half or all core • NQ core was cut, and half core was taken as sample with quarter core
techniques and taken. for duplicates.
sample preparation • If non-core, whether riffled, tube sampled, rotary split, etc and
whether sampled wet or dry. • HQ core size was only drilled in the upper weathered portion and no
HQ core was sampled.
• For all sample types, the nature, quality and appropriateness of the • Sample preparation was undertaken at ALS Laboratory Johannesburg
sample preparation technique. (ALS), an ISO accredited laboratory, and is considered appropriate.
• Quality control procedures adopted for all sub-sampling stages to ALS utilises industry best practice for sample preparation for analysis
maximise representivity of samples. involving drying of samples, weighing samples, crushing to <2mm if
required. Crushed samples are riffle-split and a 250g portion pulverised
• Measures taken to ensure that the sampling is representative of the in situ
with +85% passing through 75 microns.
material collected, including for instance results for field
duplicate/second-half sampling. • Crushing and pulverising QC tests were applied by ALS and results
found acceptable.
• Whether sample sizes are appropriate to the grain size of the material
being sampled. • Quarter core field duplicates were taken for thirty-six samples with
acceptable results at a correlation factor of 0.9.
• All sample sizes are deemed appropriate.
Quality of assay data • The nature, quality and appropriateness of the assaying and Flat Mine North drill hole results reported in this release:
and laboratory tests laboratory procedures used and whether the technique is considered • Areas of core were selected based on visual observations and
partial or total. readings from a handheld Niton XL3t 500 XRF (pXRF) analyser (standard
• For geophysical tools, spectrometers, handheld XRF instruments, etc, the analytical range >25 elements from S to U with additional elements Mg,
parameters used in determining the analysis including instrument make Al, Si and P via helium purge.
and model, reading times, calibrations factors applied and their • Samples submitted to ALS were analysed for base metals and gold.
derivation, etc
• Nature of quality control procedures adopted (e.g. standards, blanks, • All samples were analysed by an appropriate high-grade aqua regia
Criteria JORC Code explanation Commentary
duplicates, external laboratory checks) and whether acceptable ICP-AES method, ALS code ME-ICP41a.
levels of accuracy (ie lack of bias) and precision have been • Samples where assays returned >5% Cu were re-assayed by aqua regia
established. digestion and ICP-AES method, ALS code MEOG-46.
• Samples were assayed for gold by fire assay and AAS, ALS code AU-
AA25 method.
• Orion inserted CRMs every 10th sample. A total of thirty-eight CRMs
were inserted. CRMs were alternated throughout the sample stream
and where possible, matched to the sample material being analysed.
• Three CRMs were used. AMIS0847 (1.05%Cu), AMIS0809 (2.97 %Cu) and
AMIS0088 (0.3 %Cu).
• All CRMs returned acceptable results within two Standard Deviations of
the CRM average.
• Chip blanks are inserted at the beginning of each batch and after any
sample that may be considered high grade. A total of seventeen
blanks (AMIS0908 and AMIS0991) were used. Acceptable results were
returned indicating no contamination.
• The laboratory conducts their own checks which are also monitored.
The accuracy and precision of the geochemical data reported on has
deemed to be acceptable.
• Results from the three-quarter core field duplicates showed a
correlation coefficient of 0.9.
• No external laboratory checks have been carried out at this stage.
Verification of • The verification of significant intersections by either independent or • Orion's exploration geologist personally supervised the drilling and
Sampling and assaying alternative company personnel. sampling along with a team of experienced geologists.
• The use of twinned holes. • No twin holes were drilled.
• Documentation of primary data, data entry procedures, data • The mineralisation intersection in OFMED157 is located approximately
verification, data storage (physical and electronic) protocols. 36m from the mineralised intersection in OFMED154 which was recently
• Discuss any adjustment to assay data. drilled as part of the Orion confirmation drilling program. The geology
broadly corresponds though width of norite zone is narrower in
OFMED157 compared to OFMED154.
• The Competent Person has reviewed the raw laboratory data and
confirmed the calculation of the significant intersections.
• No adjustments have been made to the assay data.
Location of data points • Accuracy and quality of surveys used to locate drill holes (collar and • Collar positions of the FMN and FME prospect holes were initially
down-hole surveys), trenches, mine workings and other locations used in located using a hand-held Garmin GPS and have been subsequently
Mineral Resource estimation. surveyed by a qualified surveyor using a differential GPS.
• Specification of the grid system used. • On completion drill collars are capped and labelled.
• Quality and adequacy of topographic control. • The local South African Lo17 (Hartebeesthoek 94) grid system is used.
Criteria JORC Code explanation Commentary
• All the FME and FMN holes have been surveyed down-hole. An ITC
Gyroshot serial number 3033 used for the down-hole surveys.
Data spacing and • Data spacing for reporting of Exploration Results. • OFMED157 intersected mineralisation approximately 36 metres from
distribution mineralisation intersected in drill hole OFMED154. The hole was drilled
• Whether the data spacing and distribution is sufficient to establish the to test for down-dip continuity.
degree of geological and grade continuity appropriate for the
Mineral Resource and Ore Reserve estimation procedure(s) and • The drill spacing is considered sufficient to establish the degree of
classifications applied. geological and grade continuity appropriate for the Mineral Resource
• Whether sample compositing has been applied. and Ore Reserve estimation and classifications.
• Mostly one-metre samples were taken in mineralised zone and five-
metre fringe zone with the exception being fifty-centimetre samples
collected in the lower mineralised zone of OFMED157. Two-metre
samples were taken in wider zones of internal waste or barren zones
separating hanging wall and footwall mineralised zones.
Orientation of data in • Whether the orientation of sampling achieves unbiased sampling of • To achieve unbiased sampling, drilling is oriented as close as practically
relation to geological possible structures and the extent to which this is known, considering the possible to perpendicular, or at a maximum achievable angle, to the
structure deposit type. attitude of the mineralisation. OFME157 was inclined at -66°, data for
• If the relationship between the drilling orientation and the orientation of all the holes drilled in included in intext collar table.
key mineralised structures is considered to have introduced a • No sampling bias is anticipated as a result of drill hole orientations.
sampling bias, this should be assessed and reported if material.
Sample security • The measures taken to ensure sample security. • Chain of custody is managed by the Company. Samples were stored
on site in a secure locked building and then freighted directly to the
laboratory.
Audits or reviews • The results of any audits or reviews of sampling techniques and data. • No audits or reviews have been carried out to date for this drill
campaign.
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 • Type, reference name/number, location and ownership including • The mineral rights to the properties are vested in the peoples of South
land tenure status agreements or material issues with third parties such as joint ventures, Africa and the Minerals and Petroleum Resources Development Act,
partnerships, overriding royalties, native title interests, historical sites, 2002, (MPRDA) regulates the prospecting and mining industry in South
wilderness or national park and environmental settings. Africa.
• The security of the tenure held at the time of reporting along with any Newmont and GFSA:
known impediments to obtaining a licence to operate in the area. • O'Okiep Copper Company (Pty) Ltd (OCC), historically owned at
different times by Newmont, GFSA and Metorex, held vast areas under
an old order (prior to the MPRDA) mining right.
Criteria JORC Code explanation Commentary
Orion:
• Flat Mines Mining Right. A mining right, NC30/5/1/2/2/10150MR was
granted on 28 July 2022 to Southern African Tantalum Mining (Pty) Ltd
(SAFTA) in terms of section 23 of the MPRDA to mine for a period of
fifteen years. The right may be renewed for periods of up to 30 years.
The mining right was ceded to Orion indirect subsidiary, New Okiep
Mining Company (Pty) Ltd (NOMC) on 12 December 2023. The right is
for copper ore and tungsten are over a portion of portion 3, a portion
of portion 13, a portion of portion 14 and a portion of portion 21 of the
farm Nababeep No 134 situated within the Administrative District of
Namaqualand. The area measures 1,214Ha in extent.
• A prospecting right NC30/5/1/1/2/12850PR was granted on 27 June
2023 to SAFTA in terms of section 17 of the MPRDA for the same area as
the mining right for 3 years (renewable for 3 years) for 26 additional
minerals including gold and silver.
• SAFTA PR. A prospecting right, NC30/5/1/1/2/12755PR was granted on
21 June 2024 to SAFTA in terms of section 17 of the MPRDA to prospect
for a period of 3 years, renewable for 3 years. The right is for copper ore
and tungsten ore for portion of Portion 3, portion of Portion 10, portion
of Portion 13, portion of Portion 14, Portion 15, Portion 16, portion of
Portion 21 of the farm Nababeep 134 and Okiep Township Plot 2086.
situated within the Administrative District of Namaqualand. The total
area measures 7,164Ha in extent.
• A prospecting right NC30/5/1/1/2/12848PR was granted on 21 June
2024 to SAFTA in terms of section 17 of the MPRDA for the same area as
the prospecting right NC12755PR for 3 years (renewable for 3 years) for
26 additional minerals including gold and silver.
• Orion acquired 56.25% of the tenement rights through the SAFTA-Orion
Acquisition Agreement. The remaining 43.75% is held by the Industrial
Development Corporation of South Africa (IDC) (refer ASX/JSE releases
2 August 2021, 7 September 2022, 14 November 2022, 17 April 2024 and
6 May 2024). Applications for Section 11 consent in terms of the MPRDA
to cede the rights to NOMC are submitted once each right is granted
and are in preparation and process.
• The area was mined historically for copper and tungsten.
Exploration done by • Acknowledgment and appraisal of exploration by other parties. • Previous explorers in the region includes Newmont, GFSA and SAFTA.
other parties Exploration was focussed on Cu.
• Extensive historical drilling data (480 holes totalling 126,601m) is
contained in the database inherited from Newmont, GFSA and SAFTA
for FME, FMN and FMS. This includes 247 holes totalling 42,738m at FMN,
151 holes totalling 50,583m at FME and 82 holes totalling 33,280m at
Criteria JORC Code explanation Commentary
FMS.
• Sample and analytical details are contained within JORC Table 1 of
Orion's ASX/JSE release dated 28 August 2023.
Geology • Deposit type, geological setting and style of mineralisation. • The tenements are located over the Central and Western parts of the
Okiep Copper District (OCD). The style of mineralisation is mafic hosted
orogenic Cu-mineralisation.
• Copper mineralisation is primarily associated with irregular, elongated
and steeply dipping Koperberg Suite mafic intrusives.
• The Koperberg Suite intrusives are mainly restricted to so-called "Steep
Structures" of extensive strike lengths and steeply dipping to the north.
• The Koperberg Suite consists of intermediate to mafic rock types,
predominated by anorthosite, diorite and norite.
• Mineralisation usually occurs as blebs to disseminated Cu mineral
assemblages: bornite > chalcopyrite > chalcocite and less pyrite and
pyrrhotite.
• The more mafic and magnetite-rich lithologies generally host the bulk
of and higher-grade mineralisation.
• The OCD has a long exploration and mining history, and the geology is
well known and understood.
Drill hole Information • A summary of all information material to the understanding of the • Refer to Table 4 in Appendix 1 for collar details of drill holes reported.
exploration results including a tabulation of the following information for
all Material drill holes:
o easting and northing of the drill hole collar
o elevation or RL (Reduced Level – elevation above
sea level in metres) of the drill hole collar
o dip and azimuth of the hole
o down hole length and interception depth
o hole length.
• If the exclusion of this information is justified on the basis that the
information is not Material and this exclusion does not detract from the
understanding of the report, the Competent Person should clearly
explain why this is the case.
Data aggregation • In reporting Exploration Results, weighting averaging techniques, • A minimum 0.7% Cu cut-off was used to calculate intercepts.
methods maximum and/or minimum grade truncations (eg cutting of high • Allowance was made for 3m internal waste.
grades) and cut-off grades are usually Material and should be stated.
• A cut-off of 1.0% Cu was used for the higher-grade inclusions.
• Where aggregate intercepts incorporate short lengths of high grade
results and longer lengths of low grade results, the procedure used for • Weighted grades were calculated as follows: %Cu x sample length(m)
Criteria JORC Code explanation Commentary
such aggregation should be stated and some typical examples of • The Competent Person is of the opinion that the above aggregation
such aggregations should be shown in detail. methods are acceptable for this type of deposit.
• The assumptions used for any reporting of metal equivalent values • These aggregation methods were also applied to historical holes and
should be clearly stated. assay results in previous announcements.
• No metal equivalents are reported.
• No capping of assay results was required.
Relationship between • These relationships are particularly important in the reporting of • Drilling is generally oriented perpendicular, or at a maximum
mineralisation widths Exploration Results. achievable angle to, the attitude of the mineralisation.
and intercept lengths
• If the geometry of the mineralisation with respect to the drill hole • Generally, drill hole inclinations ranged between -65° to -75° towards the
angle is known, its nature should be reported. south for FME while the mineralisation is expected to dip close to 50-75°
• If it is not known and only the down hole lengths are reported, there should towards the north. Drill hole inclinations at FMN generally north or south at
be a clear statement to this effect (e.g. 'down hole length, true width not steep angles between -75 to vertical due to the shallow, 15°, north dipping
known'). mineralisation.
• Down holes lengths are reported in all instances apart from where true
widths (TW) are specified.
• Where true widths (TW) are specified they are calculated by measuring
the intersection width perpendicular to the interpreted mineralisation
trend.
Diagrams • Appropriate maps and sections (with scales) and tabulations of • Refer to body of the announcement for plan, cross-section and tables.
intercepts should be included for any significant discovery being • Drilling data was incorporated and monitored in Micromine™ software
reported These should include, but not be limited to a plan view of drill together with interpretation models based on the available historical drill
hole collar locations and appropriate sectional views. data.
Balanced reporting • Where comprehensive reporting of all Exploration Results is not • In the Competent Person's opinion, the Exploration Results reported in this
practicable, representative reporting of both low and high grades announcement have been reported in a balanced manner.
and/or widths should be practiced to avoid misleading reporting of
Exploration Results.
Other substantive • Other exploration data, if meaningful and material, should be reported • The Company's previous ASX releases have detailed exploration works.
exploration data including (but not limited to): geological observations; geophysical survey • Surface MT geophysical surveys are being undertaken. The objective of
results; geochemical survey results; bulk samples – size and method of the work is to explore for deeper structures that may have acted as
treatment; metallurgical test results; bulk density, groundwater, pathways for emplacement of the Koperberg mafic suites.
geotechnical and rock characteristics; potential deleterious or
contaminating substances. • A high-resolution drone magnetic survey was carried-out and will assist in
future planning of additional drill holes.
• Drone (DJI 600M Pro) magnetics were done at 30m AGL and 50m line
spacing.
• Historical detailed surface mapping is interpreted and utilised during drill
hole planning.
• Where possible, bulk density measurements were made over the full
length of each individual sample of split core. Where not possible due to
Criteria JORC Code explanation Commentary
incompetent (crushed or broken) core, a minimum of 80% of the (half-
core) sample was used. The bulk density is determined by measuring and
subtracting the wet weight from the dry weight using an electronic scale.
Care is taken to clean and zero the scale between each weighing. The
intact sample portion is first weighed in air and the weight recorded. The
sample is then weighed, while completely submerged in clean water
within a measuring container. The mass of container and water are
deducted for net submerged weight and volume displacement read on
measuring container. The sample is then removed and placed back into
the core tray in the correct position and orientation. The procedure is
repeated for each geological sample interval. The data were recorded in
the bulk density Data Sheet. The bulk density is calculated for each sample
using the formula:
BD = weight of sample
(weight of sample in air – weight of the sample in water)
Further work • The nature and scale of planned further work (eg tests for lateral • Drilling is ongoing at the Flat Mine East prospect.
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 drilling areas, provided
this information is not commercially sensitive.
Date: 12-05-2026 09:45:00
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