Wrap Text
Further Positive Drilling Results from Prieska Zinc-Copper Project
Orion Minerals NL
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”)
FURTHER POSITIVE DRILLING RESULTS FROM PRIESKA ZINC-COPPER PROJECT
- Further positive diamond drill results continue to validate historical reported and modelled data at the Deep
Sulphide Target.
- A deflection from drill hole OCOD048 has successfully intersected 19.1m at 3.38% Zn and 1.58% Cu,
providing further validation of the historic data.
- Drill hole OCOD065 intersected 7.25m at 5.07% Zn, 1.09% Cu, 0.22g/t Au and 6.69g/t Ag from 1022.20m.
- Exceptional high grade copper assay results from supergene mineralisation intersected in underground
drilling.
- Orion’s intensive drill program on both the +105 Level Target and Deep Sulphide Target are on track to
deliver JORC compliant Mineral Resource estimates by Q4 CY17 and Q1 CY18 respectively.
Orion Minerals NL (ASX/JSE: ORN) (Orion or the Company) is pleased to announce that assay results of
drill testing the Deep Sulphide Target at its Prieska Zinc-Copper (Prieska) Project in South Africa continues to
deliver excellent intersections that validate historic drill and modelled data.
"Figures" 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.
Deep Sulphide Target Summary
Assays have been received for a further two drill holes drilled with the objective of validating historically defined
mineralisation drilled at the Deep Sulphide Target. These holes are shown on Figures 1 and 2 with results as
follows:
- 2.35m at 5.13% Zn, 0.56% Cu, 0.09g/t Au and 3.45g/t Ag from 1064.00m and
19.10m at 3.38% Zn, 1.58% Cu, 0.39g/t Au and 15.3g/t Ag from 1070.59m
(OCOD048_D2, a deflection from parent OCOD048); and
- 7.25m at 5.07% Zn, 1.09% Cu, 0.22g/t Au and 6.69g/t Ag from 1022.20m (OCOD065).
OCOD048_D2 was drilled as a deflection from OCOD048 and intersected mineralisation 21m from OCOD048
and 27m away from the historic hole F2007 drilled from underground (Figure 3). The correlation between these
holes is shown in table 1.
Hole number Distance from Intersection Zn% Cu% Au g/t Ag g/t
OCOD48_D2 (m) length (m)
OCOD048_D2 0 19.10 3.38 1.58 0.39 15.3
OCOD048 21 22.45 5.33 1.34 0.26 10.6
F2007 27 19.39 3.56 1.38 No Assay No Assay
Table 1. Comparison of the intersection made in OCOD048_D2 with adjacent holes.
The intersection in OCOD048_D2 confirms the expected depth, width and grade of mineralisation in a
historically drilled area and therefore is an important result in verifying historic results for use in Mineral
Resource estimations (as defined in the Australasian Code for Reporting of Exploration Results, Mineral
Resources and Ore Reserves (JORC Code)).
Drill hole OCOD065 tested mineralisation 160m east of OCOD048_D2 (Figure 4) and intersected 7.25m at
5.07% Zn, 1.09% Cu, 0.22g/t Au and 6.7g/t Ag. Again, the results compare favourably with and validate historic
drill results as shown on Figure 4 and in table 2.
Hole Distance from Intersection Zn % Cu % Au g/t Ag g/t
Number OCOD065 (m) length (m)
OCOD065 0 7.25 5.07 1.09 0.22 6.69
F1712 28 8.85 4.96 0.90 No Assay No Assay
F2028 25 14.76 2.99 0.58 No Assay No Assay
Table 2. Comparison of the intersection made in OCOD065 with adjacent holes (Refer Appendix 1).
All significant intersections from surface drilling at the Deep Sulphide Target have been released in ASX
releases of 6 September 2017, 27 July 2017 and 17 July 2017 with historical drilling detailed in ASX release
of 18 November 2015. New significant intersections are included as Appendix 1. All intersections quoted for
the Deep Sulphide Target are length and specific gravity weighted, following the procedure detailed in
Appendix 3.
+105 Level Target summary
Underground drilling at Prieska is currently targeting mineralisation at the +105 Level Target (Open Pit). The
program is utilising the recently accessed underground workings to infill drill and extend mineralisation drilled
from surface in 2016 and 2017 (Figure 5). To date, assay results have confirmed the presence of high grade
supergene mineralisation 225m along strike from mineralisation previously intersected from surface, consistent
with Orion’s exploration model for the +105 Level Target.
Drill hole OCOU075 intersected exceptional high grade copper mineralisation in a number of samples over a
20.22m interval from 60.90m down hole (approximately 49m below surface). The drill hole intersected the
mineralisation at high angle to the massive sulphide and is close to a true width. Significant core losses were
recorded within the mineralisation zone, precluding a statement of weighted average grade over the entire
intersection width, and the hole is being re-drilled to achieve an improved core recovery. The assays from
samples with acceptable recovery identify a zone with copper grades higher than any intersected to-date.
Sample Depth Depth Cu Zn Au Ag
ID From To Width % % g/t g/t
OM0622 60.79 61.25 0.46 0.99 0.01 0 <1
61.25 62.89 1.64 Core loss
OM0623 62.89 63.55 0.66 1.3 0.01 0 <1
OM0624 63.55 64.00 0.45 1.25 0.01 0.1 1
OM0626 64.00 65.00 1.00 0.92 0.01 0 <1
OM0627 65.00 65.50 0.50 0.37 0.01 0 <1
OM0628 65.50 66.24 0.74 7.06 1.35 0.1 8
OM0629 66.24 66.90 0.66 22.5 0.4 0.5 25
66.90 68.55 1.65 Core loss
OM0630 68.55 68.95 0.40 11.7 0.06 0.6 19
68.95 70.20 1.25 Core loss
OM0632 70.20 70.85 0.65 11.7 0.19 0.6 14
70.85 71.61 0.76 Core loss
OM0633 71.61 72.11 0.50 7.88 0.35 0.2 11
OM0634 72.11 72.76 0.65 5.96 0.16 0.1 8
72.76 73.40 0.64 Core loss
OM0635 73.40 73.96 0.56 5.15 0.02 0.1 8
73.96 74.76 0.80 Core loss
OM0636 74.76 75.30 0.54 3.24 0.01 0.1 5
75.30 76.48 1.18 Core loss
OM0638 76.48 77.48 1.00 3.19 0 0.3 4
OM0639 77.48 78.38 0.90 3.08 0.01 0.2 5
78.38 78.79 0.41 Core loss
OM0640 78.79 79.31 0.52 0.94 0.01 0.1 1
79.31 80.42 1.11 Core loss
OM0642 80.42 81.12 0.70 1.38 0.02 0.1 1
Table 3. Assays for drill hole OCOU075 (Refer Appendix 2).
All significant intersections from +105 Level Target drilling have been released in ASX releases of 25 July
2016, 22 August 2016, 14 September 2016, 2 November 2016, 7 December 2016, 16 December 2016, 25
May 2017 and 6 September 2017. New significant results are included as Appendix 2. All intersections quoted
for the +105 Level Target are length weighted, following the procedure detailed in Appendix 3.
Orion’s Managing Director and CEO, Errol Smart, commented on the results:
“We are very encouraged by the drilling results. The new holes within the historically drilled area are providing
strong validation for the historic results and modelling. This, together with strong progress of engineering,
environmental studies and the social and labour plan bodes well for the outcome of the bankable feasibility
study currently underway.”
Errol Smart
Managing Director and CEO
ENQUIRIES
Investors JSE Sponsor
Errol Smart – MD & 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 Emily Fenton
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 Persons Statement
The information in this report that relates to Orion’s Exploration Results at the Prieska Project complies with
the 2012 Edition of the Australasian Code for Reporting of Exploration Results, Mineral Resources and Ore
Reserves (JORC Code) and has been compiled and assessed under the supervision of Mr Errol Smart, Orion
Minerals Managing Director. Mr Smart (PrSciNat) is registered with the South African Council for Natural
Scientific Professionals, a Recognised Overseas Professional Organisation (ROPO) for JORC purposes and
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 Smart consents to the inclusion in this announcement of the matters based on his information
in the form and context in which it appears. The Exploration Results are based on standard industry practises
for drilling, logging, sampling, assay methods including quality assurance and quality control measures as
detailed in Appendix 3.
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. 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: Table of intersections from Deep Sulphide Target drilling at the Prieska Project.
East North From To Length Cu Zn Au Ag
Drill hole
(UTMz34S) (UTMz34S) (m) (m) (m) (%) (%) (g/t) (g/t)
OCOD048_D2 1064 1066.35 2.35 0.56 5.13 0.09 3.45
624452 6686374
OCOD048_D2 1070.59 1089.69 19.1 1.58 3.38 0.39 15.3
OCOD065 624529 6686346 1022.2 1029.45 7.25 1.09 5.07 0.22 6.69
1. All significant intersections > 1m and >0.3% copper or > 0.5% zinc are quoted.
2. Holes prefixed with OCOD are drilled from surface, those with the prefix OCOU have been drilled from
underground.
3. It is recommended that the supporting information contained in Appendix 3 is read in conjunction with
these results.
Appendix 2: Table of results from +105 Level Target drilling at Prieska Project.
East North From To Length Cu Zn Au Ag
Drill hole
(UTMz34S) (UTMz34S) (m) (m) (m) (%) (%) (g/t) (g/t)
OCOU075 624778 6686285 60.79 61.25 0.46 0.99 0.01 0 <1
Core
61.25 62.89 1.64 loss
62.89 63.55 0.66 1.3 0.01 0 <1
63.55 64 0.45 1.25 0.01 0.1 1
64 65 1 0.92 0.01 0 <1
65 65.5 0.5 0.37 0.01 0 <1
65.5 66.24 0.74 7.06 1.35 0.1 8
66.24 66.9 0.66 22.5 0.4 0.5 25
Core
66.9 68.55 1.65 loss
68.55 68.95 0.4 11.7 0.06 0.6 19
Core
68.95 70.2 1.25 loss
70.2 70.85 0.65 11.7 0.19 0.6 14
Core
70.85 71.61 0.76 loss
71.61 72.11 0.5 7.88 0.35 0.2 11
72.11 72.76 0.65 5.96 0.16 0.1 8
Core
72.76 73.4 0.64 loss
73.4 73.96 0.56 5.15 0.02 0.1 8
Core
73.96 74.76 0.8 loss
74.76 75.3 0.54 3.24 0.01 0.1 5
Core
75.3 76.48 1.18 loss
76.48 77.48 1 3.19 0 0.3 4
77.48 78.38 0.9 3.08 0.01 0.2 5
Core
78.38 78.79 0.41 loss
78.79 79.31 0.52 0.94 0.01 0.1 1
Core
79.31 80.42 1.11 loss
80.42 81.12 0.7 1.38 0.02 0.1 1
1. All significant intersections > 1m and >0.3% copper or > 0.5% zinc are quoted.
2. For OCOU075 an intersection cannot be determined due to core losses, therefore results from
individual samples are shown.
3. Holes prefixed with OCOD are drilled from surface, those with the prefix OCOU have been drilled from
underground.
4. It is recommended that the supporting information contained in Appendix 3 is read in conjunction with
these results.
Appendix 3: The following tables are provided to ensure compliance with the JORC Code (2012)
requirements for the reporting of Exploration Results for the 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 - Diamond core cut at core yard and half core
techniques channels, random chips, or specific taken as sample.
specialised industry standard measurement - Diamond core sampled on 1m intervals
tools appropriate to the minerals under where possible, sample lengths adjusted to
investigation, such as down hole gamma ensure samples do not cross geological
sondes, or handheld XRF instruments, etc.). boundaries or other features.
These examples should not be taken as - Drilling at the Deep Sulphide Target carried
limiting the broad meaning of sampling. out aiming to define an approximate 100m
- Include reference to measures taken to x 100m pattern by use of “mother” holes
ensure sample representivity and the and deflections from these holes.
appropriate calibration of any measurement - Drilling at the +105 Level Target carried out
tools or systems used. aiming to define an approximate 45m x 45m
- Aspects of the determination of pattern.
mineralisation that are Material to the Public - Percussion / reverse circulation pre collars
Report. (where used) sampled on a composite
- In cases where ‘industry standard’ work has basis.
been done this would be relatively simple - Mineralised zones are drilled using core
(e.g. ‘reverse circulation drilling was used to drilling.
obtain 1 m samples from which 3 kg was - Sampling carried out under supervision
pulverised to produce a 30 g charge for fire using procedures outlined below including
assay’). In other cases more explanation industry standard QA/QC.
may be required, such as where there is - Samples submitted for analysis to ALS is
coarse gold that has inherent sampling pulverised in its entirety at ALS and split to
problems. Unusual commodities or obtain a 0.2g sample for digestion and
mineralisation types (e.g. submarine analysis.
nodules) may warrant disclosure of detailed - Downhole EM survey carried out using
information. standard techniques.
Drilling - Drill type (e.g. core, reverse circulation, - Diamond core drilling using NQ and BQ
techniques open-hole hammer, rotary air blast, auger, sized core.
Bangka, sonic, etc.) and details (e.g. core - Pre collar drilled using percussion drilling
diameter, triple or standard tube, depth of on certain holes (above mineralisation).
diamond tails, face-sampling bit or other
type, whether core is oriented and if so, by
what method, etc.).
Drill sample - Method of recording and assessing core - All mineralised intersections are done with
recovery and chip sample recoveries and results core drilling.
assessed. - Core stick-ups reflecting the depth of the
- Measures taken to maximise sample drill hole are recorded at the rig at the end
recovery and ensure representative nature of each core run.
of the samples. - A block with the depth of the hole written
- Whether a relationship exists between on it is placed in the core box at the end of
sample recovery and grade and whether each run.
sample bias may have occurred due to - At the core yard, the length of core in the
preferential loss/gain of fine/coarse core box is measured for each run. The
material. 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.
- No grade variation with recovery noted.
Logging - Whether core and chip samples have been - All percussion holes are logged on 1m
geologically and geotechnically logged to a intervals using visual inspection of washed
level of detail to support appropriate Mineral drill chips and both full. Core is logged by
Resource estimation, mining studies and geology and recorded between geological
metallurgical studies. contacts by qualified geologists.
- Whether logging is qualitative or quantitative - Qualitative logging of colour, grainsize,
in nature. Core (or costean, channel, etc.) weathering, structural fabric, lithology,
photography. alteration type and sulphide mineralogy
- The total length and percentage of the carried out.
relevant intersections logged. - Quantitative estimate of sulphide
mineralogy and quartz veining.
- 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 - BQ and NQ core cut at core yard and half
techniques quarter, half or all core taken. core taken as sample.
and sample - If non-core, whether riffled, tube sampled, - Samples from percussion pre collars are
preparation rotary split, etc. and whether sampled wet or collected by spear sampling.
dry. - Sampling on site aims to generate a < 2kg
- For all sample types, the nature, quality and sub sample to enable the entire sample to
appropriateness of the sample preparation be pulverised without further splitting.
technique. - Water is used in the dust depression
- Quality control procedures adopted for all proses during percussion drilling, resulting
sub-sampling stages to maximise in wet chip samples.
representivity of samples. - With core samples, the entire sample
- Measures taken to ensure that the sampling length is cut and sampled.
is representative of the in situ material - Sample preparation is undertaken at ALS
collected, including for instance results for Laboratory Johannesburg, an ISO
field duplicate/second-half sampling. accredited laboratory. ALS utilises industry
- Whether sample sizes are appropriate to the best practise for sample preparation for
grain size of the material being sampled. analysis involving drying of samples,
crushing to <5mm if required and then
pulverising so that +85% of the sample
passes 75 microns.
- CRM’s, blanks and replicates are inserted
every 30 samples and analysed with each
batch.
- Lab supplied CRM’s, blanks and replicates
are analysed with each batch.
- Specific gravity measurements are made
over the full length of each individual
sample on split core where possible.
Where not possible due to crushed or
broken core, a minimum of 80% of the core
sample is used. The specific gravity is
determined by measuring and subtracting
the wet weight from the dry weight using
an electronic density scale. Care is taken
to clean and zero the scale between each
weighing.
- The sample is first weighed in air and the
weight recorded. The sample is then
weighed, while completely submerged in
clean water within a measuring beaker.
The mass of beaker and water are
deducted for net submerged weight and
volume displacement read on measuring
beaker.
- 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 is recorded in the Specific Gravity
Data Sheet. The specific gravity is
calculated for each sample using the
formula:
- SG = weight of sample
-------------------------------
(weight of sample in air minus the
weight of the sample in water).
Quality of - The nature, quality and appropriateness of - Samples from drilling were submitted to
assay data the assaying and laboratory procedures ALS Chemex in Johannesburg. Samples
and laboratory used and whether the technique is were analysed for base metals using a four
tests considered partial or total. acid digest and ICP-OES and for gold by
- For geophysical tools, spectrometers, fire assay with AAS finish.
handheld XRF instruments, etc., the - External quality assurance of the
parameters used in determining the analysis laboratory assays is monitored by the
including instrument make and model, insertion of blanks, duplicates and certified
reading times, calibrations factors applied reference materials (CRM)
and their derivation, etc. - Coarse field duplicates consisting of a split
- Nature of quality control procedures sub-sample of the original crushed sample
adopted (e.g. standards, blanks, duplicates, material.
external laboratory checks) and whether - Three CRMs are alternated through the
acceptable levels of accuracy (i.e. lack of sample stream and where possible
bias) and precision have been established. matched to the material being drilled.
- Two blanks are used (pulp and chips).
- No external laboratory checks have been
carried out at this stage.
- Down hole EM surveys are carried out
using a 3 component Digi-Atlantis probe
and ultra high power transmitter.
- Loop size of 1800m x 600m are used with
continuous measurements taken as the
probe travels into the hole and out again.
- Surface TDEM surveys are carried out
using a Supracon Jesse Beep squid
sensor and ultra high power transmitter
with a Smartem 24 receiver.
Verification of - The verification of significant intersections - Orion’s executive geologist is personally
sampling and by either independent or alternative supervising the drilling and sampling along
assaying company personnel. with a team of experienced geologists.
- The use of twinned holes. - The Managing Director and the executive
- Documentation of primary data, data entry geologist have reviewed the raw laboratory
procedures, data verification, data storage data and confirmed the calculation of the
(physical and electronic) protocols. significant intersections.
- Discuss any adjustment to assay data. - For the EM survey, data is 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.
Location of - Accuracy and quality of surveys used to - Collar data has been laid out using a
data points locate drill holes (collar and down-hole handheld GPS and these coordinates are
surveys), trenches, mine workings and other reported here.
locations used in Mineral Resource - All of the Orion drill hole collars are
estimation. surveyed by a qualified surveyor using a
- Specification of the grid system used. differential GPS which may result in minor
- Quality and adequacy of topographic adjustments to coordinate data.
control. - Downhole surveys are completed using a
North-Seeking Gyro instrument.
- The historic mine survey data is in the old
national Clarke 1880 coordinate system.
All data is collected the surveyor is in
Clarke 1880 and in UTM WGS84 Zone 34
(Southern Hemisphere). UTM WGS84
Zone 34 coordinates are reported above.
Data spacing - Data spacing for reporting of Exploration - At the Deep Sulphide Target drill holes aim
and Results. to intersect mineralisation on
distribution - Whether the data spacing and distribution is approximately 100m x 100m spacing with
sufficient to establish the degree of infill drilling to be carried out in areas of
geological and grade continuity appropriate interest as determined by results.
for the Mineral Resource and Ore Reserve - At the +105 Level Target drill holes aim to
estimation procedure(s) and classifications intersect mineralisation on approximately
applied. 45m x 45m spacing with infill drilling to be
- Whether sample compositing has been carried out in areas of interest as
applied. determined by results.
- Variography studies were carried out on
the historic data set for both Targets to
determine the drill spacing for Mineral
Resource estimates.
Orientation of - Whether the orientation of sampling - Drilling is oriented perpendicular, or at a
data in achieves unbiased sampling of possible maximum achievable angle to, the attitude
relation to structures and the extent to which this is of the mineralisation.
geological known, considering the deposit type. - As a result most holes intersect the
structure - If the relationship between the drilling mineralisation at an acceptable angle.
orientation and the orientation of key - Where surface access or geotechnical
mineralised structures is considered to have conditions do not allow access to optimal
introduced a sampling bias, this should be drill collar positions, holes may be inclined.
assessed and reported if material. - The intersections will be corrected once
the mineralised zone is modelled in three
dimensions and local attitude can be
accurately determined.
- No sampling bias is anticipated as a result
of hole orientations.
- EM surveys are completed in an
orientation perpendicular to the interpreted
or intersected mineralisation.
Sample - The measures taken to ensure sample - Chain of custody is managed by the
security security. Company. Samples were stored on site in
a secure locked building and then freighted
directly to the lab.
Audits or - The results of any audits or reviews of - No audits or reviews have been carried out
reviews sampling techniques and data. at this stage.
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 - The Prospecting Right is held by a
and land tenure and ownership including agreements or subsidiary company of Agama
status material issues with third parties such as Exploration and Mining (Pty) Ltd
joint ventures, partnerships, overriding (Agama), which is a wholly owned
royalties, native title interests, historical subsidiary of Orion. As such, Orion
sites, wilderness or national park and effectively holds a 73.33% interest in the
environmental settings. project.
- The security of the tenure held at the - The Prospecting Right covers a strike of
time of reporting along with any known 2200m for the Deep Sulphide
impediments to obtaining a licence to mineralisation out of a total interpreted
operate in the area. strike of 2800m.
- The Prospecting Right covers the
complete known strike of the +105 Level
Target.
- All of the required shaft infrastructure and
lateral access underground development
is available within the Prospecting Right.
Exploration done - Acknowledgment and appraisal of - Deep Sulphide Target
by other parties exploration by other parties. - All exploration and life of mine drilling (V,
D and F holes) was done by Anglovaal,
resulting in a substantial amount of hard
copy data from which the Company has
been able to assess the prospectivity of
the remaining mineralisation.
- The Anglovaal exploration resulted in the
delineation and development of a large
mine.
- +105 Level Target
- The 2012 drilling of the NW section of the
+105 Level Target was carried out by the
previous owners of the Subsidiary (Orion
acquired the subsidiary in March 2017).
Geology - Deposit type, geological setting and style - The Copperton deposit is a Volcanogenic
of mineralisation. Massive Sulphide deposit. The deposit is
contained in the Areachap Group, which
also hosts the Boks Puts, Areachap,
Kielder, Annex Vogelstruisbult and
Kantienpan deposits.
- The historically mined section of the
deposit is confined to a tabular,
stratabound horizon in the northern limb
of a refolded recumbent synform which
plunges at approximately 45° to the
southeast. It is hosted within deformed
gneisses of the Copperton Formation,
which have been dated at 1285 Ma and
forms part of the Namaqualand
Metamorphic Complex.
- The mineralised zone outcrop has a strike
of 2400m, was oxidised and / or affected
by leached and supergene enrichment to
a depth of approximately 100m, and
outcrops 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. The width of the mineralised
zone exceeds 35m in places but
averages between 7m and 9m. The
mineralised zone persists to a depth of
1100m (as deep as 1200m in one
section) after which it is upturned.
- The +105 Level Target area comprises
the oxide / supergene / mixed zone (and
a zone of remnant primary sulphides)
situated from above the upper limit of
mining at approximately 100m depth up
to surface.
Drill hole - A summary of all information material to - All Significant Intersections, location data
Information the understanding of the exploration and other drill hole information is
results including a tabulation of the tabulated in Appendix 1 and Appendix 2.
following information for all Material drill
holes:
- easting and northing of the drill hole
collar
- elevation or RL (Reduced Level –
elevation above sea level in metres) of
the drill hole collar
- dip and azimuth of the hole
- down hole length and interception depth
- hole length.
- If the exclusion of this information is
justified on the basis that the information
is not Material and this exclusion 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, - Significant Intersections for the Deep
methods weighting averaging techniques, Sulphide Target are calculated by
maximum and/or minimum grade average of assays result > 0.3% copper
truncations (e.g. cutting of high grades) or 0.5% zinc and weighted by the sample
and cut-off grades are usually Material width and specific gravity of each sample.
and should be stated. - Significant Intersections for the +105
- Where aggregate intercepts incorporate Level Target are calculated by average of
short lengths of high grade results and assays result > 0.3% copper or 0.5% zinc
longer lengths of low grade results, the and weighted by the sample width of
procedure used for such aggregation each sample only.
should be stated and some typical - In general, the significant intersections
examples of such aggregations should correspond strongly to geological
be shown in detail. boundaries (massive sulphides) and are
- The assumptions used for any reporting clearly distinguishable from country rock /
of metal equivalent values should be surrounding samples.
clearly stated. - No truncations have been applied at this
stage for either Target.
Relationship - These relationships are particularly - All intersection widths quoted are down
between important in the reporting of Exploration hole widths.
mineralisation Results. - Most holes intersected the mineralisation
widths and - If the geometry of the mineralisation with perpendicular or at high angle to the
intercept lengths respect to the drill hole angle is known, attitude of the mineralisation.
its nature should be reported. - The mineralisation has complex geometry
- If it is not known and only the down hole and mineralisation widths need to be
lengths are reported, there should be a estimated based on interpretation of
clear statement to this effect (e.g. ‘down surrounding intercepts.
hole length, true width not known’).
Diagrams - Appropriate maps and sections (with - Appropriate diagrams (plan, cross section
scales) and tabulations of intercepts and long section) are shown in the
should be included for any significant announcement text.
discovery being reported. These should
include, but not be limited to a plan view
of drill hole collar locations and
appropriate sectional views.
Balanced - Where comprehensive reporting of all - All drill holes referred to in the
reporting Exploration Results is not practicable, announcement are listed in Appendix 1
representative reporting of both low and and Appendix 2. All other drill holes,
high grades and/or widths should be including those with no mineralisation,
practiced to avoid misleading reporting of have been detailed in previous
Exploration Results. announcements as detailed in the text.
Other substantive Other exploration data, if meaningful and - Hardcopy maps are available for a range
exploration data material, should be reported including of other exploration data. This includes
(but not limited to): geological mine survey plans, geological maps,
observations; geophysical survey results; airborne magnetics, ground magnetics,
geochemical survey results; bulk electromagnetics, gravity and induced
samples – size and method of treatment; polarisation. All available exploration data
metallurgical test results; bulk density, has been viewed by the Competent
groundwater, geotechnical and rock Person.
characteristics; potential deleterious or - The mine operated from 1972 to 1991
contaminating substances. 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 - Drilling is ongoing to test the Deep
work (e.g. tests for lateral extensions or Sulphide Target with planned holes
depth extensions or large-scale step-out shown on relevant figures in this release.
drilling). - Downhole and surface EM surveys are
- Diagrams clearly highlighting the areas of also in progress aimed at delineating
possible extensions, including the main targets away from the historically drilled
geological interpretations and future areas.
drilling areas, provided this information is
not commercially sensitive.
Date: 19/09/2017 08:56:00 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.
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