Wrap Text
THICK, HIGH-GRADE ZINC-COPPER INTERCEPTS IN FINAL ASSAYS FROM DEEP SULPHIDE
DRILL-OUT
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
(“Orion” or “the Company”)
THICK, HIGH-GRADE ZINC-COPPER INTERCEPTS IN FINAL ASSAYS FROM DEEP SULPHIDE
DRILL-OUT AHEAD OF IMPENDING RESOURCE UPDATE AT PRIESKA
• Final assay results received from the recently completed Deep Sulphide Mineral Resource drill-out.
• Paves way for the updated Mineral Resource, scheduled for mid-December 2018.
• The final 17 intersections included thick, high grade massive sulphides.
• Results include 32m at 5.05% Zn, 1.70% Cu, 0.30g/t Au and 15.32g/t Ag and 11.30m at 4.42% Zn,
3.70% Cu, 0.51g/t Au and 32.68g/t Ag.
• Assay results also confirm and upgrade key target areas for future drilling to extend mineralisation
beyond the current Mineral Resource.
• Newly-identified gold-rich lens with intersections of 2.27m at 2.22g/t Au, 2.80m at 2.40g/t Au and 2.40m
at 2.19g/t Au highlights the potential for additional mineralisation typical of VMS systems.
“Figures" and “tables” referred to throughout this announcement can be viewed on the pdf version of the
announcement, available on the Company's website, www.orionminerals.com.au.
Orion’s Managing Director and CEO, Errol Smart, commented:
“The receipt of these final impressive assay results from the Prieska Deep Sulphide drill-out is a significant
milestone for Orion. Importantly, this allows us to press ahead with the re-estimation and upgrade of the current
Mineral Resource, scheduled for completion by mid-December, with the objective of upgrading a substantial
portion of the current Inferred Resource to a higher category Resource.
At the same time, the extensive drilling program has clearly demonstrated the substantial upside at Prieska,
given the identification of significant additional massive sulphide and gold-rich target areas that have potential
to add to the resource base and further enhance this already robust project.”
Orion Minerals Limited (ASX/JSE: ORN) (Orion or the Company) is pleased to announce that it has received
the final assay results for the recently completed resource drilling program on the Deep Sulphide Mineral
Resource at its Prieska Zinc-Copper Project (Prieska Project), located in the Areachap Belt in South Africa’s
Northern Cape Province.
A total of more than 4,000 assay results from drill core samples have been received for the program, which
was completed on schedule on 30 October 2018, ahead of the planned resource update of the Deep Sulphide
Mineral Resource at Prieska.
Final assay results have now been received for 17 intersections reported on in this release – 14 from the
Vardocube Prospecting Right and 3 from the Repli Prospecting Right (of which one was drilled on the +105
Resource) (see Figures 1, 2, 3, 4 and 5). The in-fill drilling program was primarily designed to increase the
sample density for the Deep Sulphide Mineral Resource, with the objective of upgrading the previously
reported Deep Sulphide Inferred Resource of 27.8Mt grading 3.92% Zn and 1.22% Cu for the Vardocube and
Repli Prospecting Rights (refer ASX release 9 April 2018).
All assay results are for core samples submitted to ALS Laboratory in Johannesburg for analysis. The Deep
Sulphide Mineral Resource update is expected to be completed by mid-December 2018.
Significant results received from the Vardocube Prospecting Right include:
• 32.00m at 5.05% Zn, 1.70% Cu, 0.30g/t Au and 15.3g/t Ag from 1063.00m (OCOD126);
• 11.15m at 6.83% Zn, 1.09% Cu, 0.21g/t Au and 11.4g/t Ag from 1086.40m (OCOD126_D1);
• 13.00m at 6.19% Zn, 1.03% Cu, 0.16g/t Au and 11.02g/t Ag from 1015.00m including
10.00m at 7.28% Zn, 1.05% Cu, 0.17g/t Au and 9.97g/t Ag from 1015.00m (OCOD127);
• 13.00m at 5.65% Zn, 0.67% Cu, 0.16g/t Au and 8.3g/t Ag from 1024m (OCOD134_D3);
• 8.40m at 5.67% Zn, 1.57% Cu, 0.32g/t Au and 16.8g/t Ag from 1074.00m (OCOD0135_D2); and
• 11.30m at 4.42% Zn, 3.70% Cu, 0.51g/t Au and 32.7g/t Ag from 1071.42m (OCOD137_D2).
The drilling program achieved both the required intersection spacing anticipated to underpin an upgrade of
the confidence level of a substantial portion of the existing Inferred Resource to an Indicated Resource level,
and also confirmed high priority targets for future extensional drilling, including:
• Gold mineralisation in a newly-identified sub-parallel lens outside the existing Resource;
• Open extensions beyond the thick, high grade intersection in OCOD126;
• Potential high-grade, copper-rich mineralisation to the south and south-east of OCOD137_D1; and
• The double ore zone is now confirmed to be extensive and provides a high quality target offering the
potential for significant additional mineralisation.
Gold-rich intersections were achieved in holes OCOD133_D2, OCOD134 and OCOD134_D3 below the
primary mineralised zone. OCOD133_D2 intersected 2.27m at 2.22g/t Au and 23g/t Ag from a down-hole
depth of 1091.73m while OCOD134 intersected 2.40m at 2.19g/t Au from a down-hole depth of 1063.60m
and OCOD134_D3 intersected 2.00m at 1.44g/t Au from 1079m (Figure 6).
These gold intersections fall outside of the known zinc-copper mineralised horizon and confirm the potential
for outlining gold mineralisation in close proximity to the existing underground workings. This may add
significant value to the project.
The OCOD126 intersection (32.00m down-hole) is located in an area where historical intersections more
than 20m thick were reported. This significant thickening of the mineralisation correlates to the area where
the upper and lower mineralised zones coalesce. This thick zone is open-ended along strike to the north-
west and represents a high-priority drill target (Figures 7 and 8).
The high-grade intersection in OCOD137_D2 (11.30m at 4.42% Zn, 3.70% Cu, 0.51g/t Au and 32.7g/t Ag
from 1071.42m) is on the south-eastern margin of the drill grid and confirms the potential to extend the
Resource to the south-east (Figure 8).
The high-grade, high Cu:Zn ratio and higher-than-average gold values intersected in OCOD137_D1 may
indicate proximity to a vent and feeder zone, with the potential for the development of thick, high-grade
mineralisation to the south and south-east of the current Resource.
Details of previous intersections from surface drilling at the Deep Sulphide Target have been reported in the
ASX releases of 15 October 2018, 18 September 2018, 16 July 2018, 19 February 2018, 1 February 2018,
12 December 2017, 8 November 2017, 9 October 2017, 5 October 2017, 17 September 2017, 6 September
2017, 27 July 2017, 17 July 2017. Historical drilling results were reported in the ASX releases of 16 July
2018 and 18 November 2015.
Details of the latest (previously unreported) intersections are presented in Table 1 below.
Table 1: New intersections reported from the Deep Sulphide Target drilling at the Prieska Project in
this release.
Vardocube
Drill hole East North From To Length Cu Zn Au Ag
(WGS84 (WGS84 (m) (m) (m) (%) (%) (g/t) (g/t)
LO23) LO23)
OCOD121_D1 -67137 -3315647 1097.00 1105.70 8.70 1.35 4.52 0.28 13.43
OCOD124_D2 -66999 -3315737 1086.24 1094.85 8.61 1.26 5.87 0.17 12.78
OCOD125_D1 -67059 -3315853 1080.80 1084.17 3.37 0.91 9.07 0.20 8.25
OCOD126 -67090 -3315612 1063.00 1095.00 32.00 1.70 5.05 0.30 15.32
1063.00 1066.00 3.00 2.20 2.12 0.44 20.40
Incl. 1066.00 1077.00 11.00 2.74 3.63 0.38 23.46
1077.00 1095.00 18.00 1.02 6.28 0.24 9.85
OCOD126_D1 -67090 -3315612 1086.40 1097.55 11.15 1.09 6.83 0.21 11.35
OCOD127 -66994 -3315920 1002.00 1007.00 5.00 1.30 5.33 0.17 7.20
1015.00 1028.00 13.00 1.03 6.19 0.16 11.02
Incl. 1015.00 1025.00 10.00 1.05 7.28 0.17 9.97
1027.00 1028.00 1.00 1.64 3.41 0.19 15.00
OCOD127_D1 -66994 -3315920 1061.35 1074.00 12.65 1.64 1.77 0.95 14.43
Incl. 1061.35 1065.10 3.75 2.78 4.91 0.80 23.76
OCOD131 -67014 -3315678 1074.00 1078.82 4.82 0.74 6.66 0.20 8.54
OCOD133_D2 -66944 -3315879 1087.71 1091.73 4.02 0.96 7.11 0.20 8.08
1091.73 1094.00 2.27 0.26 0.08 2.22 23.02
OCOD134 -66952 -3315958 992.00 993.16 1.16 0.43 6.65 0.08 6.00
1000.72 1003.67 2.95 1.60 6.43 0.18 15.82
1012.60 1015.40 2.80 0.89 5.06 2.40 9.08
1063.60 1066.00 2.40 - - 2.19 -
OCOD134_D2 -66952.7 -3315958 987.45 989.00 1.55 0.56 1.83 0.10 19.37
1000.00 1002.00 2.00 0.90 1.44 0.28 18.89
OCOD134_D3 -66952.7 -3315958 1024.00 1037.00 13.00 0.67 5.65 0.16 8.25
1053.45 1058.00 4.55 1.66 5.77 0.27 15.73
1061.48 1075.00 13.55 1.13 0.16 0.31 29.31
1079.00 1081.00 2.00 - - 1.44 26.87
OCOD135_D2 -66858.6 -3315881 1074.00 1082.40 8.40 1.57 5.67 0.32 16.77
OCOD137_D2 -66826.6 -3315926 1071.42 1082.72 11.30 3.70 4.42 0.51 32.68
1085.03 1093.00 7.97 1.98 1.49 0.29 15.61
Incl. 1085.03 1087.16 2.13 0.43 4.66 0.14 7.52
Table 1 Continued: New intersections reported from the Deep Sulphide Target drilling at the Prieska
Project in this release.
Repli
Drill hole East North From To Length Cu Zn Au Ag
(WGS84 (WGS84 (m) (m) (m) (%) (%) (g/t) (g/t)
LO23) LO23)
OCOD117_D1 -68417 -3314586 987.50 988.66 1.16 0.40 4.17 0.22 10.00
990.81 993.36 2.55 1.20 2.90 0.19 10.06
996.00 997.00 1.00 1.59 1.93 0.20 14.00
1005.65 1008.06 2.41 1.03 2.25 0.15 8.84
OCOD136 -68578 -3314466 992.50 996.20 3.70 0.51 2.25 0.22 4.00
1002.00 1010.50 8.50 0.58 1.75 0.18 6.42
Incl. 1006.00 1010.50 4.50 0.35 3.03 0.11 3.45
OCOD138 (+105 -68680 -3314183 93.42 95.60 2.18 1.43 8.61 0.33 10.10
supergene)
1. Drilling was conducted by means of long mother-holes (>1000m) and deflections therefrom.
Azimuths and inclinations change significantly from the collar to the intersection points. Coordinates
of the mid-point of the intersection are presented in the table above.
2. All intersections quoted are based on a minimum width of 1.0m and lower cut-off grades of 0.3%
copper or 0.5% zinc. No top-cut has been applied.
3. The quoted average grades are length and density weighted (Appendix 1).
4. All intercept lengths are down-the-hole lengths.
Errol Smart
Managing Director and CEO
5 November 2018
ENQUIRIES
Investors JSE Sponsor
Errol Smart – Managing Director & CEO Rick Irving
Denis Waddell – Chairman Merchantec Capital
T: +61 (0) 3 8080 7170 T: +27 (0) 11 325 6363
E: info@orionminerals.com.au E: rick@merchantec.co.za
Media
Michael Vaughan Barnaby Hayward
Fivemark Partners, Australia Tavistock, UK
T: +61 (0) 422 602 720 T: +44 (0) 207 920 3150
E: michael.vaughan@fivemark.com.au E: orion@tavistock.co.uk
Suite 617, 530 Little Collins Street
Melbourne, VIC, 3000
Competent Person’s Statement
The information in this report that relates to Exploration Results is based on information compiled by Mr JE
Potgieter (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 Potgieter is a full-time employee of Orion.
Mr Potgieter 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 Potgieter consents to the inclusion in this announcement of the matters based
on his information in the form and context in which it appears.
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: The following tables are provided in accordance with the JORC Code (2012) for the reporting of Exploration Results for Prieska Project.
Section 1 Sampling Techniques and Data
(Criteria in this section apply to all succeeding sections.)
Criteria JORC Code explanation Commentary
Sampling • Nature and quality of sampling (e.g. cut channels, random chips, or • Drilling and sampling has been undertaken during three distinct periods
techniques specific specialised industry standard measurement tools appropriate since the discovery of mineralisation. These are pre-mine exploration
to the minerals under investigation, such as down hole gamma (1968-1971) and during mine operations (1972-1984) holes ("V", "D",
sondes, or handheld XRF instruments, etc.). These examples should and "F" prefixed holes) by Anglovaal Ltd (also known as the Anglovaal
not be taken as limiting the broad meaning of sampling. Group, “Anglovaal”), and current drilling (2017 to present) by Orion
• Include reference to measures taken to ensure sample representivity Minerals Ltd (Orion).
and the appropriate calibration of any measurement tools or systems
Anglovaal:
used.
• For diamond drilling carried out by Anglovaal between 1968 and 1984,
• Aspects of the determination of mineralisation that are Material to the
there is limited information available on sampling techniques for core.
Public Report.
However, with exploration and resource management being carried out
• In cases where ‘industry standard’ work has been done this would be under the supervision of Anglovaal, it is considered by the Competent
relatively simple (e.g. ‘reverse circulation drilling was used to obtain 1 Person that there would be procedures in place to industry best practice
m samples from which 3 kg was pulverised to produce a 30 g charge standard at that time. This is based on the Competent Persons
for fire assay’). In other cases more explanation may be required, knowledge of exploration carried out by Anglovaal and discussions with
such as where there is coarse gold that has inherent sampling personnel employed by Anglovaal.
problems. Unusual commodities or mineralisation types (e.g.
• The exploration and resource management were under the professional
submarine nodules) may warrant disclosure of detailed information.
supervision of Dr Danie Krige an internationally recognised expert of the
time who published peer reviewed papers based on the sampling data.
The sampling was successful in defining a resource estimate which was
used as the basis of successful mine development and operation over a
20-year period.
• Drilling of the original surface exploration holes was carried out 200m –
250m line spacing. Underground exploration holes were not drilled on a
regular spacing.
• Surface drill exploration samples were all sent to Anglovaal Research
Laboratory at Rand Leases Mine and underground drill samples to the
mine laboratory for analyses.
• No records on the sampling methodology used are available.
Orion:
• Diamond core is cut at the core yard and half core is taken as the
sample.
• The core is sampled at 1m intervals where possible with sample lengths
adjusted to ensure samples do not cross geological boundaries or other
features.
• Drilling at the Deep Sulphide Target was carried out with the aim of
Criteria JORC Code explanation Commentary
defining an approximate 60m x 60m pattern by use of “mother” holes
and deflections therefrom.
• Mineralised zones are drilled using core drilling.
• Sampling is carried out under supervision of a qualified geologist using
procedures outlined below including industry standard QA/QC.
• Samples submitted for analysis to ALS Chemex (Pty) Ltd (ALS) are
pulverised in its entirety at ALS and split to obtain a 0.2g sample for
digestion and analysis.
Drilling techniques • Drill type (e.g. core, reverse circulation, open-hole hammer, rotary air Anglovaal:
blast, auger, Bangka, sonic, etc.) and details (e.g. core diameter, • Records for core size are not available.
triple or standard tube, depth of diamond tails, face-sampling bit or • No record on core orientation.
other type, whether core is oriented and if so, by what method, etc.).
Orion:
• Diamond core drilling using NQ and BQ sized core. BQ core was only
drilled where problems were encountered in the original NQ drilled drill
hole and the drilling could not continue with NQ size.
• In the near-surface weathered zone HQ core was drilled.
• Pre-collar drilled using percussion drilling on certain holes (above
mineralisation).
• Core was orientated in holes selected for geotechnical studies.
Drill sample • Method of recording and assessing core and chip sample recoveries Anglovaal:
recovery and results assessed. • All mineralised intersections were done with core drilling.
• Measures taken to maximise sample recovery and ensure • Core recoveries are documented on the assay sheets. Core recoveries
representative nature of the samples. were measured for each "run".
• Whether a relationship exists between sample recovery and grade • In most V holes and all D and F holes, intersections were in hard rock
and whether sample bias may have occurred due to preferential and recoveries were generally good through the mineralisation.
loss/gain of fine/coarse material.
Orion:
• All mineralised intersections are done with core drilling.
• Core stick-ups reflecting the depth of the drill hole are recorded at the
rig at the end of each core run.
• A block with the depth of the hole written on it is placed in the core box
at the end of each run.
• At the core yard, 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 the stick-up measured at the rig to determine the
core lost.
• Core recovery in all the mineralised intersections are good.
Criteria JORC Code explanation Commentary
• No grade variation with recovery was noted.
Logging • Whether core and chip samples have been geologically and Anglovaal:
geotechnically logged to a level of detail to support appropriate • All relevant intersections for V surface holes have been geologically
Mineral Resource estimation, mining studies and metallurgical logged by qualified geologists and all of this information is available. It is
studies. understood from historical reports and discussions with Anglovaal
• Whether logging is qualitative or quantitative in nature. Core (or geologists involved with the Prieska Mine that all intersections for D and
costean, channel, etc.) photography. F holes were logged by qualified geologists. The detail logs are
• The total length and percentage of the relevant intersections logged. currently not available.
• Downhole geotechnical information is available for some of the D and F
holes only. Downhole mineralogical logs are available for some D and F
holes.
Orion:
• Pre-collar percussion holes are logged by qualified geologists on 1m
intervals using visual inspection of washed drill chips. A hand held XRF
instrument is used to determine the presence of any metals.
• Core of the entire hole length was geologically logged and recorded on
standardised log sheets by qualified geologists.
• Qualitative logging of colour, grain size, weathering, structural fabric,
lithology, alteration type and sulphide mineralogy carried out.
• Quantitative estimate of sulphide mineralogy.
• Logs are recorded at the core yard and entered into digital templates at
the project office.
Sub-sampling • If core, whether cut or sawn and whether quarter, half or all core Anglovaal:
techniques and taken. • Details of sub-sampling techniques not available.
sample preparation • If non-core, whether riffled, tube sampled, rotary split, etc. and • Although no formal QC samples were inserted by the geologists at the
whether sampled wet or dry. time of drilling the Anglovaal Research Laboratory produced their own
• For all sample types, the nature, quality and appropriateness of the standards, certified by other commercial laboratories which were
sample preparation technique. routinely inserted into batches at the laboratory. Duplicate samples
• Quality control procedures adopted for all sub-sampling stages to were also inserted to check for repeatability.
maximise representivity of samples. Orion:
• Measures taken to ensure that the sampling is representative of the in • Samples from percussion pre-collars are collected by spear sampling.
situ material collected, including for instance results for field
• Sampling on site aims to generate a < 2kg sub sample to enable the
duplicate/second-half sampling.
entire sample to be pulverised without further splitting.
• Whether sample sizes are appropriate to the grain size of the material
• Water is used in the dust depression process during percussion drilling,
being sampled.
resulting in wet chip samples.
• BQ and NQ core cut at core yard and half core taken as sample.
• With core samples, the entire sample length is cut and sampled.
Criteria JORC Code explanation Commentary
• Sample preparation is undertaken at ALS, an ISO accredited laboratory.
ALS utilises industry best practise for sample preparation for analysis,
involving drying of samples, crushing to <5mm if required and then
pulverising so that +85% of the sample passes 75 microns.
• CRMs, blanks and duplicates are inserted and analysed with each
batch. Insertion rates for the current reporting is: CRMs = 10%, blanks =
5% and field duplicates = 2%.
Quality of assay data • The nature, quality and appropriateness of the assaying and Anglovaal:
and laboratory tests laboratory procedures used and whether the technique is considered • Surface drill exploration samples were all sent to Anglovaal Research
partial or total. Laboratory at Rand Leases Mine.
• For geophysical tools, spectrometers, handheld XRF instruments, • Underground drill hole samples were sent to the mine laboratory, where
etc., the parameters used in determining the analysis including the same analytical method was used.
instrument make and model, reading times, calibrations factors • Atomic Adsorption method was used with a Nitric-bromide digest.
applied and their derivation, etc. Underground drill hole samples were sent to the mine laboratory, where
• Nature of quality control procedures adopted (e.g. standards, blanks, the same analytical method was used.
duplicates, external laboratory checks) and whether acceptable levels • Although no formal QC samples were inserted with the drill samples of
of accuracy (i.e. lack of bias) and precision have been established. the exploration holes the Anglovaal Research Laboratory developed
their own standards, certified by other commercial laboratories and
those were used internally in the laboratory. Duplicate samples were
also inserted to check for repeatability.
Orion:
• Samples submitted to ALS were analysed for base metals, Au and Ag.
Analysis was by the Inductively Coupled Plasma and Optical Emission
Spectroscopy ("ICP-OES") methodology, using a four-acid digest.
• External quality control of the laboratory assays is monitored by the
insertion of blanks and CRMs.
• CRM samples show high accuracy and tight precision with no
consistent bias.
• Blank samples indicate no contamination, within the pre-determined
thresholds, during the sample preparation process.
• Laboratory samples show excellent accuracy and precision.
• ALS has their own internal QC protocols which include CRMs (5%),
blanks (2.5%) and duplicates (2.5%).
• External laboratory checks have been carried out.
Verification of • The verification of significant intersections by either independent or Anglovaal:
sampling and alternative company personnel. • No records available.
assaying • The use of twinned holes.
Orion:
Criteria JORC Code explanation Commentary
• Documentation of primary data, data entry procedures, data • The Competent Person is personally supervising the drilling and
verification, data storage (physical and electronic) protocols. sampling along with a team of experienced geologists.
• Discuss any adjustment to assay data. • The Competent Person reviewed the calculation of the significant
intersections.
• Twin holes are drilled to verify historical drill intersections (Anglovaal).
• For the EM survey, data are collected on site and validated by a
geophysical technician daily. Data (raw and processed) is sent to a
consultant geophysicist for review and quality control.
• No adjustments have been made to the assay data.
Location of data • Accuracy and quality of surveys used to locate drill holes (collar and Anglovaal:
points down-hole surveys), trenches, mine workings and other locations • All surface and underground hole collars were surveyed by qualified
used in Mineral Resource estimation. surveyors using a theodolite.
• Specification of the grid system used. • The historic mine survey data is in the old national Lo23 Clarke 1880
• Quality and adequacy of topographic control. coordinate system.
• Downhole surveys were carried out for most of the V holes and all of the
D and F holes. Methodology of the downhole surveys is not recorded on
the available hardcopy information but plans and sections are
meticulously plotted and signed off by a certified surveyor.
• Both Eastman and Sperry Sun instruments were used in the downhole
surveys.
• Significant deflections in the dips of the holes have been noted,
especially for the deeper holes. V holes with no downhole surveys are
shallower holes drilled earlier on in the initial exploration phase. These
holes intersected areas where the mineralisation is now largely mined
out.
• All hole positions have been converted to Lo23 WGS84 coordinates.
• Underground D and F holes are recorded in local "V" line and "O"
distance coordinates with local mine datum elevations. Level plans have
both the local V/O grid and Lo23 Clark 1880 grids plotted and this has
been used to define transformation parameters from local grid to
geographical coordinates. All hole positions have been converted to
Lo23 WGS84 coordinates.
Orion:
• Drill hole collar positions are laid out using a handheld GPS.
• After completion of the Orion drilling all collars were surveyed by a
qualified surveyor using a Trimble R8 differential GPS.
• Downhole surveys are completed using a North-Seeking Gyro
instrument.
Criteria JORC Code explanation Commentary
• All survey data is in the WGS84 ellipsoid in the WG23 Zone with the
Hartebeeshoek 1994 Datum. The coordinates are also supplied in
Clarke 1880 and in UTM WGS84 Zone 34 (Southern Hemisphere).
Data spacing and • Data spacing for reporting of Exploration Results. Anglovaal:
distribution • Whether the data spacing and distribution is sufficient to establish the • Original exploration holes (V) were drilled on 200m - 250m spacing.
degree of geological and grade continuity appropriate for the Mineral • Underground drilled holes (D, F and R) were not drilled on a regular
Resource and Ore Reserve estimation procedure(s) and spaced grid.
classifications applied.
Orion:
• Whether sample compositing has been applied.
• At the Deep Sulphide Target drill holes aim to intersect mineralisation
on spacings sufficient to establish geological and grade continuity
appropriate for Mineral Resource and Ore Reserve estimations.
• Variography studies were carried out on both the historic and Orion data
set to determine the drill spacing for Mineral Resource estimates.
• No sample compositing was applied.
Orientation of data • Whether the orientation of sampling achieves unbiased sampling of • Historical and current drilling is oriented perpendicular, or at a maximum
in relation to possible structures and the extent to which this is known, considering achievable angle to, the attitude of the mineralisation.
geological structure the deposit type. • As a result, most holes intersect the mineralisation at an acceptable
• If the relationship between the drilling orientation and the orientation angle.
of key mineralised structures is considered to have introduced a • No sampling bias is anticipated as a result of hole orientations.
sampling bias, this should be assessed and reported if material. • EM surveys by Orion were completed in an orientation perpendicular to
the interpreted or intersected mineralisation.
Sample security • The measures taken to ensure sample security. Anglovaal:
• No details of sample security available. However, during the mining
operations the site was fenced and gated with security personnel
employed as part of the staff.
Orion:
• Chain of custody is managed throughout, and the policy managed
through an appropriate SOP. Samples are 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. Anglovaal:
• No records available.
Orion:
• SRK Consulting has carried out a review on the sampling techniques
and data.
Section 2 Reporting of Exploration Results
(Criteria listed in the preceding section also apply to this section.)
Criteria JORC Code explanation Commentary
Mineral tenement • Type, reference name/number, location and ownership including • The Prospecting Rights are held by Repli Trading No 27 (Pty) Ltd and
and land tenure agreements or material issues with third parties such as joint Vardocube (Pty) Ltd, which are subsidiaries of Orion.
status ventures, partnerships, overriding royalties, native title interests, • The Prospecting Right areas covers a strike of 2460m for the Deep
historical sites, wilderness or national park and environmental Sulphide mineralisation.
settings. • All of the required shaft infrastructure and lateral access underground
• The security of the tenure held at the time of reporting along with any development is available within the two Prospecting Rights.
known impediments to obtaining a licence to operate in the area.
Exploration done by • Acknowledgment and appraisal of exploration by other parties. • All exploration and life of mine drilling (V, D and F holes) was done by
other parties Anglovaal, resulting in a substantial amount of hard copy data from
which Orion has been able to assess the prospectivity of the remaining
mineralisation.
• The Anglovaal exploration resulted in the delineation and development
of a large mine.
Geology • Deposit type, geological setting and style of mineralisation. • The Copperton deposit is a Volcanogenic Massive Sulphide (VMS)
deposit which is situated in the southernmost exposures of the north-
northwest trending Kakamas Terrain, which forms part of the Mid-
Proterozoic Namaqualand Metamorphic Complex.
• The deposit is hosted by the Copperton Formation of the Areachap
Group. The Areachap Group, also hosts several other but smaller VMS
deposits such as the Areachap, Boks Puts, Kantien Pan, Kielder, and
Annex Vogelstruisbult deposits.
• The structural sequence at the mine consists of a footwall Smouspan
Gneiss Member, Prieska Copper Mines Assemblage (PCMA), which
hosts the sulphide mineralisation, and the hangingwall Vogelstruisbult
Gneiss Member.
• The historically mined section of the deposit is confined to a tabular,
stratabound horizon in the northern limb of a refolded recumbent
synform, the axis of which plunges at approximately 5° to the south-
east.
• The mineralised zone outcrop has a strike of 2400m, is oxidised and / or
affected by leached and supergene enrichment to a depth of
approximately 100m and crops out as a well-developed gossan. It has a
dip of between 55° and 80° to the northeast at surface and a strike of
130° to the north. Current drilling indicates that the Deep Sulphides has
a strike length of at least 2860m in depth.
Criteria JORC Code explanation Commentary
• The thickness of the mineralised zone exceeds 30m in places but
averages between 7m and 9m. The mineralised zone persists to a
depth of 1100m (as deep as 1228m in one section) after which it is
upturned due to the folding.
• The Deep Sulphide Target area located below the historical mined area,
comprises the steep down dip continuity ("steep limb and hinge zone”)
and from where it upturns to its subsequent synformal structure ("trough
zone").
• The morphology of the mineralised horizon in the eastern limb is well
mapped out by drilling and historic mining while the western limb up dip
extent is poorly tested and mapped.
Drill hole • A summary of all information material to the understanding of the • Drill hole collar coordinates, elevation, inclination and azimuth, down
Information exploration results including a tabulation of the following information hole length, interception depth and hole length are available in Orion’s
for all Material drill holes: geological database and are not all included in this release.
o easting and northing of the drill hole collar • Only the significant mineralised intersections and the easting and
o elevation or RL (Reduced Level – elevation above sea level in northing of these mineralised intercepts are presented in this release.
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, • Significant Intersections for the Deep Sulphide Target are calculated by
methods maximum and/or minimum grade truncations (e.g. cutting of high average of assays result > 0.3% copper or 0.5% zinc and weighted by
grades) and cut-off grades are usually Material and should be stated. the sample width and specific gravity of each sample.
• Where aggregate intercepts incorporate short lengths of high grade • Significant Intersections for the +105 Level Target are calculated by
results and longer lengths of low grade results, the procedure used average of assays result > 0.3% copper or 0.5% zinc and weighted by
for such aggregation should be stated and some typical examples of the sample width of each sample only.
such aggregations should be shown in detail. • In general, the significant intersections correspond strongly to
• The assumptions used for any reporting of metal equivalent values geological boundaries (massive sulphides) and are clearly
should be clearly stated. distinguishable from country rock / surrounding samples.
• No truncations have been applied at this stage for either Target.
Relationship • These relationships are particularly important in the reporting of • All intersection widths quoted are down hole widths.
between Exploration Results. • Most holes intersected the mineralisation perpendicular or at high angle
mineralisation • If the geometry of the mineralisation with respect to the drill hole to the attitude of the mineralisation.
angle is known, its nature should be reported. • The geometry of the Deep Sulphide mineralisation is complex and true
Criteria JORC Code explanation Commentary
widths and intercept • If it is not known and only the down hole lengths are reported, there widths can only be obtained from the three-dimensional wireframe
lengths should be a clear statement to this effect (e.g. ‘down hole length, true created of the mineralisation.
width not known’).
Diagrams • Appropriate maps and sections (with scales) and tabulations of • Appropriate diagrams (plan, cross section and long section) are shown
intercepts should be included for any significant discovery being in the release text.
reported. These should include, but not be limited to a plan view of
drill hole collar locations and appropriate sectional views.
Balanced reporting • Where comprehensive reporting of all Exploration Results is not • All drill hole results referred to in the release are listed in Table 1. All
practicable, representative reporting of both low and high grades other drill holes have been detailed in previous releases as referred to
and/or widths should be practiced to avoid misleading reporting of in the text.
Exploration Results. • The Company has presented all available information in this report in a
balanced manner and has provided appropriate context for the
Exploration Results to allow a considered and balanced judgement of
their significance.
Other substantive • Other exploration data, if meaningful and material, should be reported • Hardcopy maps are available for a range of other exploration data. This
exploration data including (but not limited to): geological observations; geophysical includes mine survey plans, geological maps, airborne magnetics,
survey results; geochemical survey results; bulk samples – size and ground magnetics, electromagnetics, gravity and induced polarisation.
method of treatment; metallurgical test results; bulk density, All available exploration data has been viewed by the Competent
groundwater, geotechnical and rock characteristics; potential Person.
deleterious or contaminating substances. • The mine operated from 1972 to 1991 and is reported to have milled a
total of 45.68 Mt of ore at a grade of 1.11% copper and 2.62% zinc,
recovering 0.43 Mt of copper and 1.01 Mt of zinc. Detailed production
and metallurgical results are available for the life of the mine.
• In addition, 1.76 Mt of pyrite concentrates and 8,403 t of lead
concentrates as well as amounts of silver and gold were recovered.
• Copper and zinc recoveries averaged 84.9% and 84.3% respectively
during the life of the mine.
Further work • The nature and scale of planned further work (e.g. tests for lateral • Drilling is on-going to test extensions of the Deep Sulphide Target in
extensions or depth extensions or large-scale step-out drilling). areas where the mineralisation is not closed-off.
• 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: 05/11/2018 10:12:00 Produced by the JSE SENS Department. The SENS service is an information dissemination service administered by the JSE Limited ('JSE').
The JSE does not, whether expressly, tacitly or implicitly, represent, warrant or in any way guarantee the truth, accuracy or completeness of
the information published on SENS. The JSE, their officers, employees and agents accept no liability for (or in respect of) any direct,
indirect, incidental or consequential loss or damage of any kind or nature, howsoever arising, from the use of SENS or the use of, or reliance on,
information disseminated through SENS.
Sharenet Sites 
