Wrap Text
More Positive Results From New Drill Target At 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
MORE POSITIVE RESULTS FROM NEW DRILL TARGET AT PRIESKA ZINC-COPPER PROJECT
- Drill hole OCOD066_D1 intersected 26.8m at 2.38% Zn and 1.22% Cu in the north-western deep sulphide extension.
- This intersection is within a recently discovered extension targeting conductors generated from recent EM surveys, and
lies outside of the historically modelled massive sulphide lens. Further drilling is being carried out to delineate the extent
of this new discovery.
- Drilling to infill and verify historic drilling of the Deep Sulphide Target at the Prieska Zinc-Copper Project continues, with
assay results received for 2 more intersections.
- Drill hole OCOD059_D2 intersected 4.4m at 3.18% Zn and 0.63% Cu.
- Drill hole OCOD060 intersected 3.6m at 5.71% Zn and 0.69% Cu.
Orion Minerals NL (ASX/JSE: ORN) (Orion or Company) is pleased to announce that assay results received confirm
significant Zn and Cu mineralisation over the wide sulphide intersection returned in drill hole OCOD066_1 reported in ASX
release dated 9 October 2017. This first deflection hole intersected a 26.8m zone of sulphide mineralisation 90m up dip of
the mother hole OCOD066 and to the northwest of the main Deep Sulphide Target at the Prieska Zinc–Copper (Prieska)
Project in South Africa. The intersection was drilled within a target generated from recent electromagnetic (EM) surveys,
and lies 100m outside of the historically modelled, wide (>2m width) massive sulphide lens. This wide Zn and Cu
intersection, which is located 100m beyond the limits of significant historic drill intercepts, confirms the potential to add
substantial tonnages to the Deep Sulphide Target.
“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.
Orion’s Managing Director and CEO, Errol Smart, commented on the results:
“We continue to be pleased with the drilling and exploration results at the Prieska Zinc–Copper Project. While drilling within
the confines of historically drilled mineralisation continues to verify the grade and width as historically reported, our
additional exploration drilling on strike and dip extensions, is intersecting significant extensions to previously drilled
mineralisation. Importantly, such results have the potential to rapidly expand the tonnages to be included in the resource
estimate and BFS currently underway.”
Deep Sulphide Target Summary
Assay results have been received for hole OCOD066_D1. The hole was drilled with the objective of validating a down hole
EM anomaly detected during a survey carried out in hole OCOD066 (Figures 1 and 2). Hole OCOD066_D1 intersected
26.8m of massive and semi massive sulphides within the anomaly where historic modelling had suggested the Deep
Sulphide mineralisation to be pinching out and less than 2m thick. Results for hole OCOD066_D1 are set out below:
26.8m at 2.38% Zn, 1.22% Cu, 0.23g/t Au and 9.29g/t Ag from 1072.20m including 14.50m at 3.06% Zn, 1.09%
Cu, 0.26g/t Au and 7.15g/t Ag from 1072.20m.
The wide zone of mineralisation in this area represents a key finding as it confirms exploration potential outside the
mineralised zone defined by historical drilling and emphasises the value of modern geophysical methods applied by Orion.
Importantly, this is in an area not previously tested by drilling and proves mineralisation to be open ended to the northwest
and up dip of hole OCOD066_D1. The EM target indicates further potential both up-dip and along strike of hole
OCOD066_D1(Figure 2) and is being targeted by additional drilling. Further deflection holes are currently being drilled off
hole OCOD066 to test the mineralisation up dip and in addition, two new holes, OCOD087 and OCOD105 are being drilled
to test continuity of mineralisation down-dip and along strike.
Planning of a second ground EM survey is underway to test for massive sulphide mineralisation along strike and up-dip of
the hole OCOD066 down hole EM anomaly (Figure 3).
Hole OCOD059_D2, a deflection hole drilled from OCOD059, intersected 4.39m at 3.18% Zn, 0.63% Cu, 0.13g/t Au and
7.55g/t Ag from 1028m. Drill holes OCOD059, 059_D1 and 059_D2 confirm mineralisation in an area with little drill hole
information (Table 1).
DOWN HOLE DEPTH
INTERSECTION Au Ag
HOLE NUMBER (m) Cu % Zn %
WIDTH (m) g/t g/t
FROM TO
1003.43 1004.11 0.68 0.09 5.45 0.08 14.0
OCOD059
1010.89 1011.89 1.00 0.07 4.5 0.08 9.0
998.00 1009.15 11.15 0.33 3.42 0.15 9.7
OCOD059_D1 1023.60 1033.40 9.80 0.72 7.96 0.13 5.5
1040.86 1045.32 4.46 0.55 5.06 0.10 8.42
OCOD059_D2 1028.00 1032.39 4.39 0.63 3.18 0.13 7.55
Table 1. Assay results from drill hole OCOD059 and its deflection holes
Hole OCOD060 intersected 3.6m at 5.71% Zn, 0.69% Cu, 0.2g/t Au and 8.21g/t Ag from 1123m in an area where historic
isopach model data had also interpreted that mineralisation was pinching out, with expected thickness less than 2m. This
result therefore provides encouragement for the presence of mineralisation amenable to mechanised mining in this area.
Hole OCOD064 was designed to prove mineralisation to be intact in an area historically prepared for stoping. The hole was
deliberately planned to drill through the preparatory development drives to confirm the locality and dimensions of the drive
and if possible, intersect mineralisation below the drives. The hole intersected 1.57m at 5.87% Zn, 1.82% Cu, 0.45g/t Au
and 11.7g/t Ag from 979.43m before drilling into the targeted drive at 981.00m. A further 0.65m at 5.43% Zn, 0.32% Cu,
0.05g/t Au and 3.0g/t Ag was intersected in the footwall of the working from 984.35m before the mother hole was
unfortunately abandoned due to broken rods (Figure 4). A deflection hole is currently being drilled to intersect the
mineralisation in between the drives to confirm width and grade in the pre-developed block.
Should the deflection hole be successful, it will be the third intersection to prove mineralisation is still in- tact in this area
where historic mine survey data shows mineralisation accessed with preparatory development but not stoped. Hole
OCOD046 intersected 10.65m at 4.19% Zn and 0.80% Cu from 1017.00m and 2.30m at 4.14% Zn and 1.04% Cu from
1031.70m. Hole OCOD068 intersected 23.30m at 5.45% Zn and 0.84% Cu from 974.55m (refer ASX releases 9 October
2017 and 5 October 2017).
All significant intersections from surface drilling at the Deep Sulphide Target have been released in ASX releases of 9
October 2017, 5 October 2017, 19 September 2017, 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 2.
Errol Smart
Managing Director and CEO
8 November 2017
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 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 2.
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)
OCOD059_D2 624824 6686032 1028.00 1032.39 4.39 0.63 3.18 0.13 7.55
OCOD060 625722 6685271 1123.00 1126.60 3.60 0.69 5.71 0.20 8.21
OCOD064 624659 6686219 979.43 981.00 1.57 1.82 5.87 0.45 11.70
OCOD066_D1 624350 6686466 1072.20 1099.00 26.80 1.22 2.38 0.23 9.29
Including 1072.20 1086.70 14.50 1.09 3.06 0.26 7.15
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 2 is read in conjunction with these results.
Appendix 2: 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 channels, random chips, or - Diamond core cut at core yard and half core taken as sample.
techniques specific specialised industry standard measurement tools appropriate - Diamond core sampled on 1m intervals where possible, sample lengths
to the minerals under investigation, such as down hole gamma adjusted to ensure samples do not cross geological boundaries or
sondes, or handheld XRF instruments, etc.). These examples should other features.
not be taken as limiting the broad meaning of sampling. - Drilling at the Deep Sulphide Target carried out aiming to define an
- Include reference to measures taken to ensure sample representivity approximate 100m x 100m pattern by use of “mother” holes and
and the appropriate calibration of any measurement tools or systems deflections from these holes.
used. - Drilling at the +105 Level Target carried out aiming to define an
- Aspects of the determination of mineralisation that are Material to the approximate 45m x 45m pattern.
Public Report. - Percussion / reverse circulation pre collars (where used) sampled on a
- In cases where ‘industry standard’ work has been done this would be composite basis.
relatively simple (e.g. ‘reverse circulation drilling was used to obtain 1 - Mineralised zones are drilled using core drilling.
m samples from which 3 kg was pulverised to produce a 30 g charge - Sampling carried out under supervision using procedures outlined
for fire assay’). In other cases more explanation may be required, below including industry standard QA/QC.
such as where there is coarse gold that has inherent sampling - Samples submitted for analysis to ALS is pulverised in its entirety at
problems. Unusual commodities or mineralisation types (e.g. ALS and split to obtain a 0.2g sample for digestion and analysis.
submarine nodules) may warrant disclosure of detailed information. - Downhole EM survey carried out using standard techniques.
Drilling techniques - Drill type (e.g. core, reverse circulation, open-hole hammer, rotary air - Diamond core drilling using NQ and BQ sized core.
blast, auger, Bangka, sonic, etc.) and details (e.g. core diameter, - Pre collar drilled using percussion drilling on certain holes (above
triple or standard tube, depth of diamond tails, face-sampling bit or mineralisation).
other type, whether core is oriented and if so, by what method, etc.).
Drill sample - Method of recording and assessing core and chip sample recoveries - All mineralised intersections are done with core drilling.
recovery and results assessed. - Core stick-ups reflecting the depth of the drill hole are recorded at the
- Measures taken to maximise sample recovery and ensure rig at the end of each core run.
representative nature of the samples. - A block with the depth of the hole written on it is placed in the core box
- Whether a relationship exists between sample recovery and grade at the end of each run.
and whether sample bias may have occurred due to preferential - At the core yard, the length of core in the core box is measured for
loss/gain of fine/coarse material. 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.
- No grade variation with recovery noted.
Logging - Whether core and chip samples have been geologically and - All percussion holes are logged on 1m intervals using visual inspection
geotechnically logged to a level of detail to support appropriate of washed drill chips and both full. Core is logged by geology and
Mineral Resource estimation, mining studies and metallurgical recorded between geological contacts by qualified geologists.
studies. - Qualitative logging of colour, grainsize, weathering, structural fabric,
- Whether logging is qualitative or quantitative in nature. Core (or lithology, alteration type and sulphide mineralogy carried out.
costean, channel, etc.) photography. - Quantitative estimate of sulphide mineralogy and quartz veining.
- The total length and percentage of the relevant intersections logged. - 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 - BQ and NQ core cut at core yard and half core taken as sample.
techniques and taken. - Samples from percussion pre collars are collected by spear sampling.
sample preparation - If non-core, whether riffled, tube sampled, rotary split, etc. and - Sampling on site aims to generate a < 2kg sub sample to enable the
whether sampled wet or dry. entire sample to be pulverised without further splitting.
- For all sample types, the nature, quality and appropriateness of the - Water is used in the dust depression proses during percussion drilling,
sample preparation technique. resulting in wet chip samples.
- Quality control procedures adopted for all sub-sampling stages to - With core samples, the entire sample length is cut and sampled.
maximise representivity of samples. - Sample preparation is undertaken at ALS Laboratory Johannesburg, an
- Measures taken to ensure that the sampling is representative of the in ISO accredited laboratory. ALS utilises industry best practise for
situ material collected, including for instance results for field sample preparation for analysis involving drying of samples, crushing to
duplicate/second-half sampling. <5mm if required and then pulverising so that +85% of the sample
- Whether sample sizes are appropriate to the grain size of the material passes 75 microns.
being sampled. - 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 assay data - The nature, quality and appropriateness of the assaying and - Samples from drilling were submitted to ALS Chemex in Johannesburg.
and laboratory tests laboratory procedures used and whether the technique is considered Samples were analysed for base metals using a four acid digest and
partial or total. ICP-OES and for gold by fire assay with AAS finish.
- For geophysical tools, spectrometers, handheld XRF instruments, - External quality assurance of the laboratory assays is monitored by the
etc., the parameters used in determining the analysis including insertion of blanks, duplicates and certified reference materials (CRM)
instrument make and model, reading times, calibrations factors - Coarse field duplicates consisting of a split sub-sample of the original
applied and their derivation, etc. crushed sample material.
- Nature of quality control procedures adopted (e.g. standards, blanks, - Three CRMs are alternated through the sample stream and where
duplicates, external laboratory checks) and whether acceptable levels possible matched to the material being drilled.
of accuracy (i.e. lack of bias) and precision have been established. - 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 by either independent or - Orion’s executive geologist is personally supervising the drilling and
sampling and alternative company personnel. sampling along with a team of experienced geologists.
assaying - The use of twinned holes. - The Managing Director and the executive geologist have reviewed the
- Documentation of primary data, data entry procedures, data raw laboratory data and confirmed the calculation of the significant
verification, data storage (physical and electronic) protocols. 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 data - Accuracy and quality of surveys used to locate drill holes (collar and - Collar data has been laid out using a handheld GPS and these
points down-hole surveys), trenches, mine workings and other locations coordinates are reported here.
used in Mineral Resource estimation. - All of the Orion drill hole collars are surveyed by a qualified surveyor
- Specification of the grid system used. using a differential GPS which may result in minor adjustments to
- Quality and adequacy of topographic control. coordinate data.
- 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 and - Data spacing for reporting of Exploration Results. - At the Deep Sulphide Target drill holes aim to intersect mineralisation
distribution - Whether the data spacing and distribution is sufficient to establish the on approximately 100m x 100m spacing with infill drilling to be carried
degree of geological and grade continuity appropriate for the Mineral out in areas of interest as determined by results.
Resource and Ore Reserve estimation procedure(s) and - At the +105 Level Target drill holes aim to intersect mineralisation on
classifications applied. approximately 45m x 45m spacing with infill drilling to be carried out in
- Whether sample compositing has been applied. areas of interest as 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 data - Whether the orientation of sampling achieves unbiased sampling of - Drilling is oriented perpendicular, or at a maximum achievable angle to,
in relation to possible structures and the extent to which this is known, considering 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 - Where surface access or geotechnical conditions do not allow access
sampling bias, this should be assessed and reported if material. to optimal drill collar positions, holes may be inclined.
- 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 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 lab.
Audits or reviews - The results of any audits or reviews of sampling techniques and data. - No audits or reviews have been carried out 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 and ownership including - The Prospecting Right is held by a subsidiary company of Agama
and land tenure agreements or material issues with third parties such as joint Exploration and Mining (Pty) Ltd (Agama), which is a wholly owned
status ventures, partnerships, overriding royalties, native title interests, subsidiary of Orion. As such, Orion effectively holds a 73.33% interest
historical sites, wilderness or national park and environmental in the project.
settings. - The Prospecting Right covers a strike of 2200m for the Deep Sulphide
- The security of the tenure held at the time of reporting along with any mineralisation out of a total interpreted strike of 2800m.
known impediments to obtaining a licence to operate in the area. - 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 by - Acknowledgment and appraisal of exploration by other parties. Deep Sulphide Target
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 of mineralisation. - The Copperton deposit is a Volcanogenic 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 the understanding of the - All Significant Intersections, location data and other drill hole
Information exploration results including a tabulation of the following information information is tabulated in Appendix 1.
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, - 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.
widths and intercept angle is known, its nature should be reported. - The mineralisation has complex geometry and mineralisation widths
lengths - If it is not known and only the down hole lengths are reported, there need to be estimated based on interpretation of surrounding intercepts.
should be a clear statement to this effect (e.g. ‘down hole length, true
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 announcement 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 announcement, are listed in
practicable, representative reporting of both low and high grades Appendix 1. All other drill holes, including those with no mineralisation,
and/or widths should be practiced to avoid misleading reporting of have been detailed in previous announcements as detailed in the text.
Exploration Results.
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 ongoing to test the Deep Sulphide Target.
extensions or depth extensions or large-scale step-out drilling). - Downhole and surface EM surveys are also in progress, aimed at
- Diagrams clearly highlighting the areas of possible extensions, delineating targets away from the historically drilled areas.
including the main geological interpretations and future drilling areas,
provided this information is not commercially sensitive.
Date: 08/11/2017 09:15:00 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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