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PREDICTIVE DISCOVERY LIMITED — Regulatory Filings 2021
May 12, 2021
65537_rns_2021-05-12_58df59b5-abb8-436a-8232-a2eb3e892ec8.pdf
Regulatory Filings
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ASX: PDI | 13[th] May 2021
WIDESPREAD AND HIGH-GRADE GOLD FROM REGIONAL AUGER DRILLING AT BANKAN
HIGHLIGHTS
-
-
New auger drilling reports high grade gold at the Bankan Project with Argo Regional Target AG1 returning 12m @ 9.84g/t Au from 4m (BKAU0175) and 16m @ 2.02g/t Au from 4m (BKAU0294).
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Figure 1 – Bankan Project, power auger drilling results overlain RTP aeromagnetic data, interpreted targets and lineaments.
ASX: PDI | 13[th] May 2021
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Figure 2 – Bankan Project, Argo Prospects showing new power auger and rock chip sample results.
- Encouraging rock chip results of up to 9.48g/t Au from workings north-east of AG1 (Figure 1) have highlighted an additional target on the Argo permit for follow-up power auger drilling.
Bankan Creek North
-
KKOAU1618 : 18m @ 0.24g/t Au from 4m
-
KKOAU1619 : 21m @ 0.56g/t Au from 4m.
-
The auger drilling continues to identify evidence of widespread gold in saprolite beneath shallow lateritic cover across the Bankan Project, providing numerous targets for follow-up by Air Core (AC) drilling.
-
Results were also received from NE Bankan core holes BNERD0018A and BNERD0069 (Figure 4), respectively from the northern and southern extensions of the NE Bankan gold mineralised system, but outside of the core gold mineralised zone. Better results included:
-
BNERD0018A: 25m @ 0.51g/t from 106m
-
BNERD0069: 21m @ 1.27g/t from 112m, including 15m @ 1.59g/t Au from 118m
ASX: PDI | 13[th] May 2021
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Figure 3 – Bankan Project – new power auger results from main Bankan Gold Project area.
- While diamond drilling of depth extensions of the core gold mineralised zone at NE Bankan is ongoing with two rigs, the third drill rig has now moved to Bankan Creek for RC infill drilling on 40m spaced lines over a 320m strike length. Results from this drilling will contribute to the Maiden Resource Estimate for the Bankan Project.
Managing Director Paul Roberts commented: “It is still very early days in our regional Bankan exploration program following up the recent aeromagnetic survey targets. We are very encouraged by these first results, which are providing good indications of widespread gold values in weathered bedrock (saprolite) and some high grade gold at AG1 - the first of our new targets.
We have already identified shallow gold mineralisation from auger drilling closer to NE Bankan and Bankan Creek, which we will follow up with AC drilling in the next month. Further AC drilling will be planned on the new northern targets over the next few months after we get a clearer picture from the ongoing auger drilling program.”
Predictive Discovery Limited (ASX: PDI, Predictive or the Company) is pleased to announce further results from regional and resource drilling at the Company’s Bankan Project. Predictive has made two significant gold discoveries within 18 months – at the NE Bankan and Bankan Creek prospects through the successful application of power auger drilling.
ASX: PDI | 13[th] May 2021
Power auger drilling is a rapid and cost-effective exploration method for the collection of weathered bedrock samples below tracts of lateritic and transported cover.
Power Auger Drill Results
With the recent aeromagnetic survey identifying nine high priority regional gold drill targets along a major 35km-long NNW structural corridor, the Company is using power auger drilling to test each area, targeting shallow oxide gold mineralisation in deeply weathered bedrock. Such zones can extend down into fresh rock with thick widths and good continuity, as demonstrated at the NE Bankan and Bankan Creek prospects.
The auger holes reported here were located on the Argo permit on Target AG1 and AG2 (Figure 1) as well as from the large auger grid encompassing the area around and between the NE Bankan, Bankan Creek and Bankan West prospects (Figure 2). Results from 386 holes, totalling 8,735m are reported in this release. Encouraging gold values were returned in numerous holes including Argo auger hole BKAU0175, which intersected 12m @ 9.84g/t Au from 4m .
More holes have now been drilled on the AG2 target, south of AG1 and results are pending.
Ongoing Bankan Exploration
Two power auger rigs are currently active on the Bankan Project. The immediate focus of the current auger program is to explore for gold mineralisation on structural targets AG2, BK1 and SA1, identified from the recently completed aeromagnetic survey.
RC and diamond drilling continues with two rigs currently diamond drilling at NE Bankan and one rig RC drilling Bankan Creek, all of which is designed to support the Maiden Resource Estimate, planned for Q3-2021.
Metallurgical test work is expected to begin this month. Core samples are currently being prepared on site and will be air freighted to Australia in the next week.
ASX: PDI | 13[th] May 2021
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Figure 4 – Bankan Project, NE Bankan Prospect, new diamond holes and results overlain previously RC/DD results.
-END-
Predictive advises that it is not aware of any new information or data that materially affects the exploration results contained in this announcement.
This announcement is authorised for release by Predictive Managing Director, Paul Roberts.
For further information please contact:
ASX: PDI | 13[th] May 2021
Paul Roberts
Managing Director
Tel: +61 402 857 249 Email: [email protected]
COMPETENT PERSONS STATEMENT
The exploration results reported herein are based on information compiled by Mr Paul Roberts (Fellow of the Australian Institute of Geoscientists). Mr Roberts is a full-time employee of the company and has sufficient experience relevant to the style of mineralisation and type of deposits being considered to qualify as a Competent Person as defined by the 2012 Edition of the Australasian Code for Reporting of Exploration Results, Mineral Resources and Ore Reserves. Mr Roberts consents to the inclusion in the report of the matters based on his information in the form and context in which it appears.
ASX: PDI | 13[th] May 2021
ABOUT PREDICTIVE
The Company’s primary focus is the 100%-owned Bankan Project, located in Guinea’s Siguiri Basin, which hosts AngloGold’s large Siguiri Mine (+10Moz). In April 2020, the Company made a greenfields gold discovery on its Kaninko permit, now known as the Bankan Project.
Bankan comprises 4 tenements - Kaninko, Saman, Argo and Bokoro – a 358km[2 ] land package with no previous drilling undertaken. A 25,000-meter drilling program is currently underway with the aim of delivering an initial resource in mid-2021.
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Figure 5 - Predictive Discovery’s 100%-owned Guinea Portfolio of gold projects
ASX: PDI | 13[th] May 2021
TABLE 1 – BANKAN PROJECT – AUGER & GEOCHEMICAL RESULTS
| Hole numbers | Northing (WGS84- 29N) |
Easting (WGS84 – 29N) |
RL | Hole dips |
Azimuth | Hole Depth | From | Interval | Au (ppb) |
|---|---|---|---|---|---|---|---|---|---|
| Augers | |||||||||
| KKOAU1549 – 1639, 91 holes totalling 2,083m. Significant holes are shown below |
Refer to Figure 3 for most sample locations. |
Refer to Figure 3 for most sample locations |
386 – 440 See notes |
All vertical | Not relevant to vertical holes |
The holes were 4-20m deep with an average depth of 19m. Some holes stopped short of the target depth because they encountered wet samples at shallow depths |
Not relevant to the samples described in this report |
Not relevant to the samples described in this report |
See notes and Figure 3 for colour-coded composite gold value intervals |
| KKOAU1618 | 393010 | 1175101 | 386 | -90 | 0 | 22 | 4 | 18 | 239 |
| KKOAU1619 | 393080 | 1175100 | 388 | -90 | 0 | 25 | 4 | 21 | 564 |
| BKAU0001 – 0298, & BKAU0301- 0302, 295 holes totalling 6,652m Significant holes are shown below. |
Refer to Figure 2 for most sample locations |
Refer to Figure 2 for most sample locations |
378- 488 See notes |
All vertical | Not relevant to vertical holes |
The holes were 8-30m deep with an average depth of 22m. Some holes stopped short of the target depth because they encountered wet samples at shallow depths |
Not relevant to the samples described in this report |
Not relevant to the samples described in this report |
See notes and Figure 2 for colour-coded composite gold value intervals |
| BKAU0082 | 395259 | 1191921 | 393 | -90 | 0 | 24 | 5 | 19 | 695 |
| BKAU0083 | 394622 | 1191920 | 379 | -90 | 0 | 15 | 6 | 9 | 639 Incl.5m @1.14g/t Au from 10m |
| BKAU0175 | 393981 | 1192641 | 385 | -90 | 0 | 16 | 4 | 12 | 9844 Incl.4m @29.5g/t Au from 7m |
| BKAU0202 | 394702 | 1192480 | 397 | -90 | 0 | 15 | 4 | 11 | 589 |
| BKAU0294 | 394139 | 1192248 | 389 | -90 | 0 | 20 | 4 | 16 | 2025 Incl.8m @3.87g/t Au from 4m |
| Notes: Power auger drilling is carried out with a 4WD mounted auger rig capable of drilling vertical holes up to 30m deep. The target depth on this drill program was 20m. Up to 5 samples were collected in 4m intervals and assayed for gold. The prepared drill samples were sent to the SGS laboratory in Bamako, Mali for pulverisation and fire assay gold analysis. Reported (colour coded) results are for a calculated length-weighted composite starting from a depth of 4m (the average thickness of the laterite – which is partly transported) to the end of each hole. The RL range for the power auger grid in the project areas are shown above in metres. Individual RLs are not reported in this announcement because theyare not relevant to interpretingauger drill data of this type. |
ASX: PDI | 13[th] May 2021
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|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
||Trenches|||||||||||||||
||BKTR001|1192290||393838||399|0||355.5||110||78|80|740|
||BKTR002|1192275||393880||397|0||355.5||110||84|86|660|
||Note 2: Trenches - a backhoe was used to dig a 2.5m deep by 2m wide trench. The floor of the trenches were sampled using a chisel
and hammer to create ~2.5kg composite samples over 2m intervals that were assayed for gold. Trenches are treated as horizontal
holes.|||||||||||||||
||Surface Samples - Rocks|||||||||||||||
||SampleID||Northing
(WGS84-
29N)||Easting
(WGS84 –
29N)|||RL||Au g/t||Note: Significant results only.
Other reconnaissance rock samples locations may
be shown on plans.||||
||PDG0012229||1194018||396023|||392||6.55||||||
||PDG0012629||1194230||395795|||390||9.48||||||
||PDG0012634||1189840||394105|||390||1.04||||||
||PDG0012052||1187426||394547|||395||2.40||||||
TABLE 2 – JORC CODE – AUGER & GEOCHEMICAL RESULTS
| TABLE 2 – JORC CODE – AUGER & GEOCHEMICAL RESULTS | TABLE 2 – JORC CODE – AUGER & GEOCHEMICAL RESULTS | TABLE 2 – JORC CODE – AUGER & GEOCHEMICAL RESULTS |
|---|---|---|
| Section 1: Sampling Techniques and Data | ||
| Criteria | JORC Code Explanation |
Commentary |
| Sampling Technique | Nature and quality of sampling (eg cut channels, random chips, or specific specialised industry standard measurement tools appropriate to the minerals under investigation, such as downhole gamma sondes, or handheld XRF instruments, etc). These examples should not be taken as limiting the broad meaning of sampling Include reference to measures taken to ensure sample representivity and the appropriate calibration of any measurement tools or systems used. Aspects of the determination of mineralisation that are Material to the Public Report. In cases where ‘industry standard’ work has been done this would be relatively simple (eg ‘reverse circulation drilling was used to obtain 1 m samples from which 3 kg was pulverised to produce a 30 g charge for fire assay’). In other cases more explanation may be required, such as where there is coarse gold that has inherent sampling problems. Unusual commodities or mineralisation types (eg submarine nodules) may warrant disclosure of detailed information. |
The sampling described in this report refers to power auger drill samples, as well as surface geochemical samples which includes trenching and rock sampling. In all the power auger drill holes reported here, 2kg composite samples were collected for every 4m downhole. In all the trench sampling reported here, ~2.5 kg composite samples were collected for every 2m along the trench. All samples including individual reconnaissance rock chips were submitted for fire assay Au (FAA515) analysis at the SGS laboratory in Bamako. |
| Drilling | Drill type (eg core, reverse circulation, open- hole hammer, rotary air blast, auger, Bangka, sonic, etc) and details (eg core diameter, triple or standard tube, depth of diamond tails, face- sampling bit or other type, whether core is oriented and if so, bywhat method,etc). |
The power drilling was carried out using 4WD-mounted power auger rigs. Trenches of 2.5m deep by 2m wide were dug using a backhoe. The floor of the trench was then channel sampled using hammer and chisel. |
ASX: PDI | 13[th] May 2021
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|---|---|---|
|Drill Sample Recovery|Method of recording and
assessing core and chip sample
recoveries and results assessed.
Measures taken to maximise
sample recovery and ensure
representative nature of the
samples.
Whether a relationship exists
between sample recovery and
grade and whether sample bias
may have occurred due to
preferential loss/gain of
fine/coarse material.|Sample recovery is not assessed for power auger drilling as it is a geochemical
method. In general, however, recoveries are good because the hole has to be cleared
by the screw-type rods in order for the drill rods to advance downwards.
Trench sample recovery is good as floor of the trench is cleaned and then sampled.|
|Logging|Whether core and chip samples
have been geologically and
geotechnical logged to a level of
detail to support appropriate
Mineral Resource estimation,
mining studies and metallurgical
studies.
Whether logging is
qualitative or quantitative
in nature. Core (or
costean/Trench, channel,
etc) photography.
The total length and percentage
of the relevant intersections
logged.|None of these samples will be used in a Mineral Resource estimation. Nonetheless,
all power auger holes, trenches and geochem samples were geologically logged in a
qualitative fashion.|
|Sub-Sampling
Technique and
Sample Preparation|If core, whether cut or sawn and
whether quarter, half or all core
taken. If non-core, whether
riffled, tube sampled, rotary
split, etc and whether sampled
wet or dry.
For all sample types, the nature,
quality and appropriateness of the
sample preparation technique.
Quality control procedures
adopted for all sub-sampling
stages to maximise representivity
of samples.
Measures taken to ensure that the
sampling is representative of the in
situ material collected, including for
instance results for field
duplicate/second-half sampling.
Whether sample sizes are
appropriate to the grain size of the
materialbeing sampled.|Auger -Each 4 m to 5 m interval in the composite interval was subsampled using a
scoop.
Trench -Each 2m interval in the trench composite was channel sampled by hammer
and chisel onto a tarp along the base of the trench. This was then collected into each
sample bag.
All samples are considered sufficiently representative of the drilled and trenched
material in a geochemical program.
Both company standards and blanks were included in the sample batches for
auger and trenching at a ratio of 1:20, no field duplicates were collected.|
ASX: PDI | 13[th] May 2021
| Quality of Assay Data and Laboratory Tests |
The nature, quality and appropriateness of the assaying and laboratory procedures used and whether the technique is considered partial or total. For geophysical tools, spectrometers, handheld XRF instruments, etc, the parameters used in determining the analysis including instrument make and model, reading times, calibrations factors applied and their derivation, etc. Nature of quality control procedures adopted (eg standards, blanks, duplicates, external laboratory checks) and whether acceptable levels of accuracy (ie lack of bias) and precision have been established. |
The analytical method used was a fire assay method (FA515) with a 5ppb Au detection limit which is appropriate for a geochemical drilling program. Company standards and blanks were inserted in batches at a ratio of 1:20. The results of these QC check as well as the laboratory standards, blanks, duplicates and checks indicate the analytical results are suitable for a geochemical drilling program and indicate no bias. |
|---|---|---|
| Verification of Sampling and Assaying |
The verification of significant intersections by either independent or alternative company personnel. The use of twinned holes The verification of significant intersections by either independent or alternative company personnel. Discuss any adjustment to assay data |
Hole twinning is not normally practised with power auger drilling. |
| Location of Data points |
Accuracy and quality of surveys used tolocate drill holes (collar and down- hole surveys), trenches, mine workings and other locations used in Mineral Resource estimation. Specification of the grid system used Quality and adequacy of topographic control |
Collar and sample locations were located using a hand held GPS with a location error of +/-3m.All co-ordinates are recorded in Universal Transverse Mercator (UTM), Datum WGS 84, Zone 29 - Northern Hemisphere. |
| Data Spacing and Distribution |
Data spacing for reporting of Exploration Results Whether the data spacing and distribution is sufficient to establish the degree of geological and grade continuity appropriate for the Mineral Resource and Ore Reserve estimation procedure(s) and classifications applied. Whether sample compositing has been applied |
Power auger holes were located on 320m x 80m, 150m x 80m or 80m x 80m grids as required. Trench spacing was ~40m apart This type of drilling and trenching is not appropriate for the calculation of any Mineral Resource estimate. |
| Orientation of Data in Relation to Geological Structure |
Whether the orientation of sampling achieves unbiased sampling of possible structures and the extent to which this is known, considering the deposit type. If the relationship between the drilling orientation and the orientation of key mineralised structures is considered to have introduced a sampling bias, this should be assessed and reported if material. |
Most of the reported power auger holes are located on east-west lines 80m to 320m apart based on regional geophysical trends and the known N-S orientation of the NE Bankan mineralisation and the NNW-SSE orientation of the Bankan Creek mineralisation. |
| Sample Security | The measures taken to ensure sample security |
Reference samples are stored at PDI’s sample store in Kouroussa, Guinea. |
| Section 2 Reporting of Exploration Results |
ASX: PDI | 13[th] May 2021
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|---|---|---|
|Mineral Tenement
and Land Tenure
Status|Type, reference name/number,
location and ownership including
agreements or material issues
with third partiessuch asjoint
ventures, partnerships, overriding
royalties, native title interests,
historical sites, wilderness or
national park and environmental
settings.
The security of the tenure held at
the time of reporting along with
any known impediments to
obtaining a licence to operate in
the area.|The auger drilling was conducted over the Bankan Gold Project which comprises 4
exploration and reconnaissance permits, Kaninko (100%), Saman (100%), Bokoro
(100%) and Argo JV (right to earn 100%). Permits are held by Predictive
subsidiaries in Guinea or, in the case of Argo, in a joint venture structure.|
|Exploration Done
by Other Parties|Acknowledgment and
appraisal of exploration by
otherparties.|Predictive is not aware of any significant previous gold exploration over the
permit.|
|Geology|Deposit type, geological
setting and style of
mineralisation.|The geology of the Bankan project permits consists of mafic volcanics and
intrusives, granitic rocks and metasediments.|
|Drill Hole Information|A summary of all information
material to the understanding of
the exploration results including a
tabulation of the 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 whythisisthe case.|The required information is provided in Table 1.|
|Data Aggregation
Methods|In reporting Exploration Results,
weighting averaging techniques,
maximum and/or minimum
grade truncations (eg cutting of
high grades) and cut-off grades
are usually Material and should
be stated.
Where aggregate intercepts
incorporate short lengths of high
grade results and longer lengths of
low grade results, the procedure
used for such aggregation should
be stated and some typical
examples of such aggregations
should be shown in detail.
The assumptions used for any
reporting of metal equivalent
values should be clearlystated.|No weighted average or truncation methods were used for the power auger results,
sample composites were only used from 4m depth.
No cut-off grade was applied in the average grade calculation.|
|Relationship Between
Mineralisation Widths
and Intercept Lengths|These relationships are
particularly important in the
reporting of Exploration Results
If the geometry of the
mineralisation with respect to|True widths cannot be estimated for the power auger drill results as the
orientation of the underlying weathered rocks is not known.|
ASX: PDI | 13[th] May 2021
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|---|---|---|
||the drill hole angle is known, its
nature should be reported. If it
is not known and only the down
hole lengths are reported, there
should be a clear statement to
this effect (eg ‘down hole length,
truewidth not known’).||
|Diagrams|Appropriate maps and sections
(with scales) and tabulations of
intercepts should be included for
any significant discovery being
reported These should include,
but not be limited to a plan view
of drill hole collar locations and
appropriate sectional views.|An appropriate map is provided in Figure 1-3.|
|Balanced Reporting|Where comprehensive reporting
of all Exploration Results is not
practicable, representative
reporting of both low and high
grades and/or widths should be
practiced to avoid misleading
reporting of Exploration Results.|All significant results are reported in Table 1.|
|Other
Substantive
Exploration Data|Other exploration data, if
meaningful and material, should
be reported including (but not
limited to): geological
observations; geophysical survey
results; geochemical survey
results; bulk samples – size and
method of treatment;
metallurgical test results;
bulk density, groundwater,
geotechnical and rock
characteristics; potential
deleterious or contaminating
substances.|Apart from the previously reported surface soil samples and the AC/RC/DD drill
results, there are no other exploration data which are relevant to the results
reported in this release.|
|Further Work|The nature and scale of planned
further work (eg tests for lateral
extensions or large scale step out
drilling.
Diagrams clearly highlighting the
areas of possible extensions,
including the main geological
interpretations and future drilling
areas, provided this information is
notcommercially sensitive.|Power auger and AC drilling will be carried out to follow up the results reported in
this release.|
ASX: PDI | 13[th] May 2021
TABLE 3 – BANKAN PROJECT DD/RC SIGNIFICANT DRILLING RESULTS
| Hole No. | Prospect | UTM 29N East |
UTM 29N North |
RL (GPS) |
Hole azim uth |
Hole dip |
Hole depth |
0.25g/t gold cut-off | 0.25g/t gold cut-off | 0.25g/t gold cut-off | Comments |
|---|---|---|---|---|---|---|---|---|---|---|---|
| From | Inter val |
Au **g/t ** |
|||||||||
| BNERD0018A | Bankan NE | 396592 | 1175577 | 413 | 90 | -55 | 232.14 | 50.0 | 7.0 | 0.59 | |
| 62.0 | 2.0 | 1.67 | |||||||||
| 67.0 | 2.0 | 1.11 | |||||||||
| 106.0 | 25.0 | 0.51 | |||||||||
| 141.0 | 1.0 | 1.66 | |||||||||
| 159.0 | 3.0 | 0.37 | |||||||||
| 172.0 | 12.2 | 0.78 | |||||||||
| 187.0 | 1.8 | 0.63 | |||||||||
| 211.0 | 2.0 | 0.65 | |||||||||
| BNERD0069 | Bankan NE | 396647 | 1174858 | 426 | 90 | -55 | 229.90 | 112.0 | 21.0 | 1.27 | Incl. 15m @ 1.59g/t Au from 118m |
| 136.0 | 14.0 | 0.45 | |||||||||
| 171.0 | 12.3 | 0.49 | |||||||||
| 204.0 | 7.0 | 0.46 | |||||||||
| 215.0 | 3.0 | 0.41 | |||||||||
| 227.2 | 2.7 | 0.56 | Mineralised to EOH |
TABLE 4 - JORC CODE – RC-DD DRILLING
Section 1: Sampling Techniques and Data
JORC Code Criteria Commentary Explanation Sampling Nature and quality of sampling (eg Samples assayed were cut drill core and reverse circulation (RC) drill Technique cut channels, random chips, or chips. specific specialised industry standard measurement tools appropriate to the minerals under Core was cut in half with a core saw where competent and with a knife in investigation, such as downhole soft saprolite in the upper sections of the diamond drill holes. gamma sondes, or handheld XRF instruments, etc). These examples One metre RC chip samples were riffle split producing samples which should not be taken as limiting the weighed 2-3kg for submission to the assay laboratory. Duplicate samples broad meaning of sampling Include reference to measures taken to were also retained for re-assay. ensure sample representivity and the appropriate calibration of any Sampling was supervised by qualified geologists. measurement tools or systems used. Aspects of the determination of mineralisation that are Material Samples were dried, crushed and pulverised at the SGS laboratory in to the Public Report. Bamako to produce a 50g fire assay charge. In cases where ‘industry standard’ work has been done this would be relatively simple (eg ‘reverse circulation drilling was used to obtain 1 m samples from which 3 kg was pulverised to produce a 30 g charge for fire assay’). In other cases more explanation may be required, such as where there is coarse gold that has inherent sampling problems. Unusual commodities or mineralisation types (eg submarine nodules) may warrant disclosure of detailed information. Drilling Drill type (eg core, reverse Drill types are 2 multipurpose drill rigs and one dedicated diamond drill circulation, open- hole hammer,
Drill types are 2 multipurpose drill rigs and one dedicated diamond drill rig, all of which are capable of collecting PQ, HQ and NQ core. One of the
ASX: PDI | 13[th] May 2021
|||ASX: PDI | 13thMay 2|
|---|---|---|
||rotary air blast, auger, Bangka,
sonic, etc) and details (eg core
diameter, triple or standard tube,
depth of diamond tails, face-
sampling bit or other type,
whether core is oriented and if so,
by what method, etc).|multipurpose rigs is being used for RC drilling using a 118mm diameter
reverse circulation hammer.|
|Drill Sample
Recovery|Method of recording and
assessing core and chip sample
recoveries and results assessed.
Measures taken to maximise
sample recovery and ensure
representative nature of the
samples.
Whether a relationship exists
between sample recovery and
grade and whether sample bias
may have occurred due to
preferential loss/gain of
fine/coarse material.|Drill core:
Sample recoveries were measured in the normal way for diamond drill core.
Core recoveries were generally excellent except for the saprolite where some
core loss was experienced owing to clayey core being washed out in the
diamond drilling process. Given that most of these saprolite core loss zones
were obtained in mineralised intervals, grade is probably underestimated in
those sections as zones of core loss are assumed to contain no gold.
Significant sample bias is not expected with cut core.
RC chips:
Each 1 metre drill sample was weighed.
Sample recoveries were in general high and no unusual measures were taken
to maximise sample recovery.
Significant sample bias is not expected with riffle splitting of RC chips.|
|Logging|Whether core and chip samples
have been geologically and
geotechnical logged to a level of
detail to support appropriate
Mineral Resource estimation,
mining studies and metallurgical
studies.
Whether logging is
qualitative or quantitative
in nature. Core (or
costean/Trench, channel,
etc) photography.
The total length and percentage
of the relevant intersections
logged.|All drill samples were logged systematically for lithology, weathering,
alteration, veining, structure and minor minerals. Minor minerals were
estimated quantitively. A core orientation device was employed enabling
orientated structural measurements to be taken.|
|Sub-Sampling
Technique and
Sample
Preparation|If core, whether cut or sawn and
whether quarter, half or all core
taken. If non-core, whether
riffled, tube sampled, rotary split,
etc and whether sampled wet or
dry.
For all sample types, the nature,
quality and appropriateness of the
sample preparation technique.
Quality control procedures
adopted for all sub-sampling
stages to maximise representivity
of samples.
Measures taken to ensure that the
sampling is representative of the in
situ material collected, including for
instance results for field
duplicate/second-half sampling.
Whether sample sizes are
appropriate to the grain size of the
material being sampled.|The diamond drill samples were collected by longitudinally splitting core
using a core saw or a knife where core was very soft and clayey. Half of
the core was sent off to the laboratory for assay. The sampling method is
considered adequate for a diamond drilling program of this type.
The RC samples were collected by riffle splitting samples from large bags
collected directly from the cyclone on the drill rig. Sample condition is
generally dry, however a few samples are moist or wet. One field
duplicate was taken and assayed every 45m. The sampling method is
considered adequate for an RC drilling program of this type.|
ASX: PDI | 13[th] May 2021
| Quality of Assay Data and Laboratory Tests |
The nature, quality and appropriateness of the assaying and laboratory procedures used and whether the technique is considered partial or total. For geophysical tools, spectrometers, handheld XRF instruments, etc, the parameters used in determining the analysis including instrument make and model, reading times, calibrations factors applied and their derivation, etc. Nature of quality control procedures adopted (eg standards, blanks, duplicates, external laboratory checks) and whether acceptable levels of accuracy (ie lack of bias) and precision have been established. |
All samples were assayed by SGS technique FAA505 for gold with a detection limit of 5ppb Au. All samples with gold values exceeding 10g/t Au were re- assayed using SGS method FAA515 with a detection limit of 0.01g/t Au. Field duplicates, standards and blank samples were each submitted for every 15 samples on a rotating basis. Diamond core field duplicates were obtained by cutting the half core sample into two quarter core samples. As samples are not homogenised some variation is expected. Duplicate and standards analyses were all returned were within acceptable limits of expected values. |
|---|---|---|
| Verification of Sampling and Assaying |
The verification of significant intersections by either independent or alternative company personnel. The use of twinned holes The verification of significant intersections by either independent or alternative company personnel. Discuss any adjustment to assay data |
At this stage, the intersections have not been verified independently. No twin holes were drilled in the holes reported here but some drilling has been done previously sufficiently close to a previously drilled holes to provide confirmation of the location of mineralisation. Specifically KKODD002 was drilled close to Air Core Hole KKOAC001 and demonstrated that that similar, consistent gold mineralisation was present in the near surface. |
| Location of Data points |
Accuracy and quality of surveys used tolocate drill holes (collar and down- hole surveys), trenches, mine workings and other locations used in Mineral Resource estimation. Specification of the grid system used Quality and adequacy of topographic control |
Drill hole collar locations were recorded at the completion of each hole by hand-held GPS. Positional data was recorded in projection WGS84 Zone 29N. Hole locations will be re-surveyed using a digital GPS system at completion of program. |
| Data Spacing and Distribution |
Data spacing for reporting of Exploration Results Whether the data spacing and distribution is sufficient to establish the degree of geological and grade continuity appropriate for the Mineral Resource and Ore Reserve estimation procedure(s) and classifications applied. Whether sample compositing has been applied |
The diamond and RC drill holes were designed to explore the gold mineralised system in fresh rock. A series of DD holes are in the process of being drilled on most 80m spaced sections in the 1.3km long zone tested previously with RC drilling. The adequacy of the current drill hole spacing for Mineral Resource estimation will be determined with an Independent Expert at the time when the Mineral Resource Estimate is calculated |
| Orientation of Data in Relation to Geological Structure |
Whether the orientation of sampling achieves unbiased sampling of possible structures and the extent to which this is known, considering the deposit type. If the relationship between the drilling orientation and the orientation of key mineralised structures is considered to have introduced a sampling bias, this should be assessed and reported if material. |
There is very limited outcrop in the immediate area but based on the small number of geological observations and the overall strike of the anomaly, an east west line orientation with holes inclined to the west was considered most likely to test the target mineralised zone. Results from earlier drilling has now determined that the overall dip of the gold mineralised envelope is to the west. All drill holes reported in this release were drilled from west to east to obtain near-true widths through the gold mineralisation. |
| Sample Security | The measures taken to ensure sample security |
Core trays and RC chips are stored in the Company’s sample storage facility close to the nearby Bankan Village. Coarse rejects and pulps will be eventually recovered from SGS in Bamako and stored at the same facility. |
ASX: PDI | 13[th] May 2021
|||ASX: PDI | 13thMay 2|
|---|---|---|
|Audits or Reviews|The results of any audits or
reviews of sampling techniques
and data|No reviews or audits of sampling techniques were conducted.|
|Section 2 Reporting of Exploration Results|||
|Mineral
Tenement and
Land Tenure
Status|Type, reference name/number,
location and ownership including
agreements or material issues with
third partiessuch asjoint
ventures, partnerships, overriding
royalties, native title interests,
historical sites, wilderness or
national park and environmental
settings.
The security of the tenure held at
the time of reporting along with
any known impediments to
obtaining a licence to operate in
the area.|The Kaninko Reconnaissance Authorisation was granted to a Predictive
subsidiary in Guinea in June 2019. It was converted to an Exploration
Permit in early October 2019. It is 100% owned by Predictive.|
|Exploration Done
by Other Parties|Acknowledgment and
appraisal of exploration by
other parties.|Predictive is not aware of any significant previous gold exploration over
the permit.|
|Geology|Deposit type, geological setting
and style of mineralisation.|The geology of the Kaninko permit consists of felsic intrusives including
granite and tonalite, with mafic to intermediate volcanics and
intrusives. Metasediments including marble, chert and schists have also
been observed.|
|Drill Hole
Information|A summary of all information
material to the understanding of
the exploration results including a
tabulation of the 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.|See Table 3 and the accompanying notes in this table.|
|Data
Aggregation
Methods|In reporting Exploration Results,
weighting averaging techniques,
maximum and/or minimum grade
truncations (eg cutting of high
grades) and cut-off grades are
usually Material and should be
stated.
Where aggregate intercepts
incorporate short lengths of high
grade results and longer lengths of
low grade results, the procedure
used for such aggregation should
be stated and some typical
examples of such aggregations
should be shown in detail.
The assumptions used for any
reporting of metal equivalent
values should be clearlystated.|Diamond and RC drill sampling was generally in one metre intervals.
Up to 2m (down-hole) of internal waste is included for results reported at the
0.25g/t Au cut-off grades.
Mineralised intervals are reported on a weighted average basis.|
|Relationship
Between
Mineralisation
Widths and
Intercept Lengths|These relationships are particularly
important in the reporting of
Exploration Results
If the geometry of the
mineralisation with respect to
the drill hole angle is known, its|True widths have been estimated for intercepts where mineralisation
orientation is reasonably clear.|
ASX: PDI | 13[th] May 2021
|||ASX: PDI | 13thMay 2|
|---|---|---|
||nature should be reported. If it is
not known and only the down
hole lengths are reported, there
should be a clear statement to
this effect (eg ‘down hole
length, true width not known’).||
|Diagrams|Appropriate maps and sections
(with scales) and tabulations of
intercepts should be included for
any significant discovery being
reported These should include,
but not be limited to a plan view
of drill hole collar locations and
appropriate sectional views.|An appropriate map is included in this release (Figure 4).|
|Balanced Reporting|Where comprehensive reporting
of all Exploration Results is not
practicable, representative
reporting of both low and high
grades and/or widths should be
practiced to avoid misleading
reporting of Exploration Results.|Comprehensive reporting of the drill results is provided in Table 3.|
|Other
Substantive
Exploration
Data|Other exploration data, if
meaningful and material, should
be reported including (but not
limited to): geological
observations; geophysical survey
results; geochemical survey
results; bulk samples – size and
method of treatment;
metallurgical test results;
bulk density, groundwater,
geotechnical and rock
characteristics; potential
deleterious or contaminating
substances.|All other exploration data on this area has been reported previously by
PDI.|
|Further Work|The nature and scale of planned
further work (eg tests for lateral
extensions or large scale step out
drilling.
Diagrams clearly highlighting the
areas of possible extensions,
including the main geological
interpretations and future drilling
areas, provided this information is
not commercially sensitive.|These results form part of a large ongoing program of RC and diamond
drilling. Geological studies will continue to be conducted to characterise
the gold mineralisation going forward.|