Latest Infill Drilling Results from Rockface
Released
Released
Announcement PDF
Latest Infill Drilling Results from Rockface
6 June 2024
•
Assays from eleven diamond drill holes at Rockface have been received.
•
Significant intersections returned in the Northern Lode include:
▪
KJCD208D11: 2.00 m @ 7.37% Cu, 41.12 g/t Ag, 0.38 g/t Au from 617.16 m
•
▪
7.44 m @ 7.49% Cu, 36.19 g/t Ag, 0.89 g/t Au from 708.75 m including
o
0.73 m @ 10.83% Cu, 33.80 g/t Ag, 0.43 g/t Au from 709.77 m, and
o
0.86 m @ 10.94% Cu, 51.00 g/t Ag, 0.64 g/t Au from 713.30 m and
o
0.47 m @ 18.91% Cu, 56.60 g/t Ag, 0.20 g/t Au from 716.50 m
KJCD208D2:
•
▪
And
And
1.42 m @ 1.63% Cu, 9.55 g/t Ag, 0.49 g/t Au from 677 m
KJCD604D2:
o
•
1.33 m @ 1.52% Cu, 11.54 g/t Ag, 0.52 g/t Au from 622.4 m
1.75 m @ 1.60% Cu, 42.31 g/t Ag, 0.09 g/t Au from 594.3 m
Incl.
0.83 m @ 2.69% Cu, 21.20 g/t Ag, 0.11 g/t Au
Other intersections at the upper part of main lodes:
▪
KJD619:
2.17 m @ 1.82% Cu, 13.48 g/t Ag, 0.12 g/t Au from 129.68 m
▪
KJD621:
0.74 m @ 4.10% Cu, 16.20 g/t Ag, 0.18 g/t Au From 204.30 m
▪
KJD623:
1.61 m @ 2.55% Cu, 11.75 g/t Ag, 0.06 g/t Au from 287.00 m
KGL Resources (ASX:KGL) has recently obtained assay results for eleven drill holes in the ongoing 2024
drilling program conducted at Jervois. The primary objective of the drilling program at the Rockface deposit
is to increase the geological confidence of the Mineral Resource categories in a planned future update to the
Rockface Mineral Resource Estimate. All holes reported (Figure 1, Table A) were mainly targeted at infill
and testing lateral extents of mineralisation. Results continue to support the interpretation of parallel lodes at
Rockface shown in the previous announcement dated 27th March 2024.
North Lode
Holes KJCD208D1 and D2 were targeted primarily at gaps in Rockface North and Main lodes to better
constrain geological interpretations and increase confidence in resource models.
Hole KJCD208D1 was targeted at a gap in the center of the Rockface North lodes (Figure 2, Figure 4) and
continued through to the Rockface Main lode. A narrow zone of high-grade copper mineralisation was
intersected corresponding to the North lode, with a thick zone of high-grade mineralisation corresponding
with the Main lode. Best results from this hole were:
•
2.00 m @ 7.37% Cu, 41.12 g/t Ag, 0.38 g/t Au from 617.16 m (RF North) and
•
7.44 m @ 7.49% Cu, 36.19 g/t Ag, 0.89 g/t Au from 708.75 m (RF Main) including
•
0.73 m @ 10.83% Cu, 33.80 g/t Ag, 0.43 g/t Au from 709.77 m, and including
•
0.86 m @ 10.94% Cu, 51.00 g/t Ag, 0.64 g/t Au from 713.30 m and including
•
0.47 m @ 18.91% Cu, 56.60 g/t Ag, 0.20 g/t Au from 716.50 m
1 All intervals in this report are estimated true thicknesses unless otherwise specified.
Latest Infill Drilling Results from Rockface
Hole KJCD208D2 was targeted at a gap in the center of Rockface North lodes 35 m east of KJCD208D1,
and extended to the Main lode (Figure 2, Figure 4). Two zones of mineralisation corresponded with the
North and North Footwall lodes, separated by an extended zone (54 m) of no or low-grade mineralisation.
•
1.33 m @ 1.52% Cu, 11.54 g/t Ag, 0.52 g/t Au From 622.40 m (HW) and
•
1.42 m @ 1.63% Cu, 9.55 g/t Ag, 0.49 g/t Au from 677.00 m (FW)
Drill hole KJCD604 and two daughter holes wedged from it (604D1 and 604D2) were planned to infill gaps
in the resource model and identify the easterly extension of the Rockface North lodes. All three holes were
extended further to confirm extensions of the Rockface main lodes.
Holes KJCD604 and KJCD604D1 were targeted at the eastern margin of the Rockface North lodes (Figure
2). Both holes intersected zones of mineralisation that effectively close out the lodes in this direction:
•
1.01 m @ 1.31% Cu, 9.90 g/t Ag, 0.21 g/t Au from 654.72 m (KJCD604)
•
0.64 m @ 1.04% Cu, 15.5 g/t Ag, 0.22 g/t Au from 584.65 m (KJCD604D1)
Hole KJCD604D2 was also targeted at a gap in the Rockface north lodes towards their eastern margin
(Figure 5, Figure 6). Two zones of sulphide mineralisation intersected, separated by a short interval of low
grade (<0.5% Cu):
•
1.75 m @ 1.60% Cu, 42.31 g/t Ag, 0.09 g/t Au from 594.30 m, including
•
0.83 m @ 2.69% Cu, 21.20 g/t Ag, 0.11 g/t Au, and
•
0.92 m @ 1.06% Cu, 5.20 g/t Ag, 0.05 g/t Au from 600.7 m
Main Lode
Drill holes KJD619, 620, 621, 622, 623 and 624 were targeted at the upper part of the Rockface Main lodes
to fill the gaps for the next resource upgrade. The aim of this drilling is to support a potential extension of the
underground resource upwards towards the surface.
Drill holes KJD620 and KJD624 targeted the western margin of the Main lode and intersected low-grade
mineralisation (< 1% Cu). Similarly, KJD622 targeted at the eastern margin of the lode intersected low-grade
mineralisation only.
Holes KJD619, 621 and 623 intersected strong zones of mineralisation carrying significant copper. KJD619
is located near the centre of the Main lode and intersected thick and high-grade copper mineralisation
(Figure 1, Figure 5, Figure 6). KJD621 intersected the eastern edge of the Main lode 70 m down-dip from
KJD619 yielding high-grade mineralisation (Figure 1, Figure 5, Figure 6). The intersection from hole KJD623
is located at the western edge of the Main lode 150 m down-dip from KJD619 and yielded strong copper
mineralisation (Figure 1, Figure 5, Figure 7).
•
KJD619: 2.17 m @ 1.82% Cu, 13.48 g/t Ag, 0.12 g/t Au from 129.68 m
•
KJD621: 0.74 m @ 4.10% Cu, 16.20 g/t Ag, 0.18 g/t Au From 204.30 m
•
KJD623: 1.61 m @ 2.55% Cu, 11.75 g/t Ag, 0.06 g/t Au from 287.00 m
These intersections in the upper part of the Main lode provide support for a potential upward extension of
optimized underground stoping, subject to achieving the appropriate Mineral Resource classification.
Next Steps at Rockface
The final resource infill drillholes at Rockface have been completed and are awaiting assays. These are
expected in the coming weeks and will be used to update the Rockface mineral resource.
KGL has successfully targeted resource extensions at Rockface North with its previous deepest hole,
KJCD575W1, intersecting strong copper with gold credits:
•
5.00 m @ 2.43% Cu, 18.10 g/t Ag, 0.55 g/t Au from 1,132.50 m including
▪ 2.10 m @ 3.53% Cu, 21.50 g/t Ag, 1.01 g/t Au from 1,134.54 m
Latest Infill Drilling Results from Rockface
High-grade zinc/copper/silver massive sulphides were also identified in drillhole KJCD556D4:
•
4.10 m
@ 3.59% Cu, 199.90 g/t Ag, 0.65 g/t Au, 20.49% Zn, 4.32% Pb from 990.00 m
The largest rig on site is now undertaking two deeper holes beneath the Rockface North lode with the aim of
further testing the Mineral Resource extensions. The latest Down-Hole Electromagnetic Survey (DHEM) at
Rockface confirms the continuation of mineralisation at depth (Figure 2). At the completion of drilling further
DHEM surveys will be undertaken to determine potential for resource extensions at depth.
Figure 1: Map of Rockface deposit showing locations of reported drill holes (black traces and labels). 2022 resource
block model blocks >1% Cu shown coloured by copper grade, other drilling shown by light grey trace lines.
Latest Infill Drilling Results from Rockface
Figure 2: Long projection of Rockface north lodes showing locations of reported drill hole intersections. 2022 resource
block model blocks >1% Cu shown coloured by copper grade, older drilling lode intersections shown by copper grade
>1%. locations of holes drilled waiting on assay results. Location of 2 targets yet to be drilled. All intersections quoted
are estimated true thickness (ETT). The DHEM conductor plates modelled from deepest hole (KJCD575W1) at Rockface.
Latest Infill Drilling Results from Rockface
Figure 3. North-south cross section looking west through KJDCD604, KJDCD604D1 and KJDCD604D2 hole trace.
2022 resource block model blocks >1% Cu coloured by copper grade; older drill hole traces shown in grey.
Latest Infill Drilling Results from Rockface
Figure 4. North-south cross section looking west through KJDCD208D1 and KJDCD208D2 hole trace. 2022 resource block
model blocks >1% Cu coloured by copper grade; older drill hole traces shown in grey
Latest Infill Drilling Results from Rockface
Figure 5: Long projection of Rockface main lodes showing locations/trace of reported drill hole intersections. 2022
resource block model blocks >1% Cu shown coloured by copper grade, older drilling lode intersections shown by copper
grade (>1%) 2021. All intersections quoted are estimated true thickness (ETT).
Latest Infill Drilling Results from Rockface
Figure 6. North-south cross section looking west through KJD619 and KJD620 hole trace. 2022 resource block model
blocks >1% Cu coloured by copper grade; older drill hole traces shown in grey.
Latest Infill Drilling Results from Rockface
Figure 7. North-south cross section looking west through KJD623 hole trace. 2022 resource block model blocks >1% Cu
coloured by copper grade; older drill hole traces shown in grey.
.
Latest Infill Drilling Results from Rockface
Table A: Reported drill hole collar details
Hole ID
Easting
Northing
Elevation
Collar
Collar
Final
dip
azimuth
depth
(grid)
(m)
Comment
KJCD604
628450.70
7490880.34
357.51
-69.54
164.27
780.70
HQ core, NQ core from 451 m
KJCD604D1
628450.70
7490880.34
357.51
-69.54
164.27
795.70
wedge from parent hole KJCD604
at 289.1 m, NQ core
KJCD604D2
628450.70
7490880.34
357.51
-69.54
164.27
762.70
wedge from parent hole KJCD604
at 289.9 m, NQ core
KJD619
628378.17
7490431.08
369.31
-60.34
179.35
166.60
NQ core
KJD620
628301.30
7490430.14
368.75
-63.58
181.76
237.30
NQ core
KJD621
628396.03
7490498.55
362.98
-59.57
178.76
246.30
NQ core
KJD622
7490518.77
7490526.80
7490523.92
361.88
362.70
362.76
-69.86
174.12
199.70
NQ core
-62.93
179.65
321.15
NQ core
KJD624
628404.03
628277.05
628250.03
-55.61
187.01
303.20 NQ core
KJCD208D1
628282.20
7490769.68
356.22
-75.00
156.91
795.70
NQ core, wedged from 407m in
parent hole KJCD208
KJCD208D2
628282.20
7490769.68
356.22
-75.00
156.91
776.50
NQ core, wedged from 414m in
parent hole KJCD208
KJD623
Table B: Reported drill hole intercept summary.
Hole_ID
KJD619
KJCD604
KJD620
KJCD604D1
KJD621
KJCD604D2
incl.
KJCD604D2
KJD622
KJCD208D1
KJCD208D1
incl.
&
incl.
&
incl.
KJD624
KJD623
KJCD208D2
KJCD208D2
Depth_From
m
Depth_To
m
129.68
135.00
654.72
133.00
135.72
655.90
584.65
204.30
594.30
595.30
600.70
585.40
205.32
596.20
596.20
601.70
617.16
708.75
709.77
713.30
716.50
619.66
717.87
710.67
714.35
717.07
287.00
622.40
626.30
677.00
Downhole
Thickness
m
Estimated
True
Thickness
m
Ag
g/t
Au
g/t
Pb
%
Zn
%
13.48
12.50
9.90
0.12
0.11
0.21
0.04
0.05
0.01
0.16
0.07
0.01
15.50
16.20
42.31
21.20
5.20
0.22
0.18
0.09
0.11
0.05
0.06
0.01
3.11
2.04
0.02
0.41
0.03
6.59
6.15
0.04
41.12
36.19
33.80
51.00
56.60
0.38
0.89
0.43
0.64
0.20
0.01
0.03
0.02
0.12
0.02
0.09
0.02
0.02
0.04
0.07
289.00
624.30
627.37
3.32
2.17
1.82
0.72
0.47
2.00
1.18
1.01
1.31
Not Reportable Copper intersection
0.75
0.64
1.04
1.02
0.74
4.10
1.90
1.75
1.60
0.90
0.83
2.69
1.00
0.92
1.06
Not Reportable Copper intersection
2.50
2.00
7.37
9.12
7.44
7.49
0.90
0.73
10.83
1.05
0.86
10.94
0.57
0.47
18.91
Not Reportable Copper intersection
2.00
1.61
2.55
1.90
1.33
1.52
1.07
0.75
1.69
11.75
11.54
12.10
0.06
0.52
0.33
0.01
0.03
0.02
0.09
0.49
0.24
679.00
2.00
9.55
0.49
0.01
0.02
1.42
Cu
%
1.63
This announcement has been approved by the directors of KGL Resources Limited.
Lode
Rockface Main
Rockface North
Rockface Main
Rockface North
Rockface Main
Rockface North
Rockface North
Rockface Main
Rockface North
Rockface Main
Rockface Main
Rockface Main
Rockface North
Rockface North
(FW)
Latest Infill Drilling Results from Rockface
Competent Person Statement
The information in this report that relates to Exploration Results is based on information compiled by Dr
James Lally, a Competent Person who is a Member of The Australian Institute of Geologists. Dr Lally is
employed by KGL Resources as a consultant through Mining Associates Pty Ltd. He has over 25 years of
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 ‘Australasian
Code for Reporting of Exploration Results, Mineral Resources and Ore Reserves’. Dr Lally consents to the
inclusion in the report of the matters based on his information in the form and context in which it appears.
The following drill holes were originally reported on the date indicated and using the JORC code specified
in the table. The Company confirms it is not aware of any new information or data that materially affects the
information included in the original market announcement and that all material assumptions and technical
parameters underpinning the estimates in the relevant market announcement continue to apply and have
not materially changed
JORC Reported
Hole
Date originally Reported
Under
KJCD575W1
08/11/2023
2012
KJCD556D4
08/11/2023
2012
The Rockface Resource information was first released to the market on 07/03/2022 and complies with JORC
2012. The company confirms that it is not aware of any new information or data that materially affects the
information included in the original market announcement and that all material assumptions and technical
parameters underpinning the estimates in the relevant market announcement continue to apply and have not
materially changed. The company confirms that the form and context in which the Competent Person’s
findings are presented have not been materially modified from the original market announcement.
Forward Looking statements
This release includes certain forward-looking statements. The words “forecast”, “estimate”, “like”, “anticipate”,
“project”, “opinion”, “should”, “could”, “may”, “target” and other similar expressions are intended to identify
forward looking statements. All statements, other than statements of historical fact, included herein, including
without limitation, statements regarding forecast cash flows and potential mineralisation, resources and
reserves, exploration results and future expansion plans and development objectives of KGL are forwardlooking statements that involve various risks and uncertainties. Although every effort has been made to verify
such forward-looking statements, there can be no assurance that such statements will prove to be accurate
and actual results and future events could differ materially from those anticipated in such statements. You
should therefore not place undue reliance on such forward-looking statements.
Statements regarding plans with respect to the Company’s mineral properties may contain forward-looking
statements. Statements in relation to future matters can only be made where the Company has a reasonable
basis for making those statements.
Latest Infill Drilling Results from Rockface
JORC Code, 2012 Edition – Table 1
1.1
Section 1 Sampling Techniques and Data
(Criteria in this section apply to all succeeding sections.)
Criteria
JORC Code explanation
Commentary
Sampling
techniques
•
•
•
•
•
Nature and quality of sampling (e.g. cut channels, random
chips, or specific specialised industry standard measurement
tools appropriate to the minerals under investigation, such as
down hole 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 (e.g. ‘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 (e.g. submarine
nodules) may warrant disclosure of detailed information.
•
•
•
•
Drilling
techniques
•
Drill type (e.g. core, reverse circulation, open-hole hammer,
rotary air blast, auger, Bangka, sonic, etc) and details (e.g.
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).
•
•
•
•
•
At Jervois all deposits diamond drilling and
reverse circulation (RC) drilling were used
to obtain samples for geological logging
and assaying. The core samples
comprised a mixture of sawn HQ quarter
core, sawn NQ half core and possibly BQ
half core (historical drilling only). Sample
lengths are generally 1m, but at times
length were adjusted to consider geological
variations. RC sample intervals are
predominantly 1m intervals with some 2
and 4m compositing (historical holes only).
RC samples are routinely scanned by KGL
Resources with a Niton XRF. Samples
assaying greater than 0.1% Cu, Pb or Zn
are submitted for analysis at a commercial
laboratory.
Al holes reported in this announcement are
diamond drilled and sample recovery is
>95% and 100% in the mineralised zone.
Mineralisation at all deposits is
characterized by disseminations, veinlets
and large masses of chalcopyrite,
associated with magnetite-rich alteration
within a psammite. The mineralisation has
textures indicative of structural
emplacement within specific strata i.e. the
mineral appears stratabound.
Documentation of the historical drilling
(pre-2011) for Reward is variable.
Reported holes drilled diamond with mostly
NQ (table 1). Some section of the deep
holes was drilled utilizing directional
technique with no core recovery.
Directional drilling is generally in the barren
upper part of the hole.
The KGL and previous Jinka-Minerals RC
drilling was conducted using a reverse
circulation rig with a 5.25-inch facesampling bit. Diamond drilling was either
in NQ2 or HQ3 drill diameters.
Metallurgical diamond drilling (JMET holes)
were PQ
There is no documentation for the historic
drilling techniques.
Diamond drilling was generally cored from
surface with some of the deeper holes at
Rockface and Reward utilizing RC precollars.
Oriented core has been measured for the
recent KGL drilling.
Latest Infill Drilling Results from Rockface
Criteria
JORC Code explanation
Commentary
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.
•
•
•
•
•
Logging
•
•
•
Whether core and chip samples have been geologically and
geotechnically 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, channel, etc) photography.
The total length and percentage of the relevant intersections
logged.
•
•
•
•
•
Sub-sampling
techniques 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.
•
For the reported hole sample recovery
stand above 95%, except the section cut
with directional technique.
No evidence found in between sample
recovery and grades.
The KGL RC samples were not weighed
on a regular basis but when completed no
sample recovery issues were encountered
during the drilling program.
Jinka Minerals and KGL split the rare
overweight samples (>3kg) for assay.
Since overweight samples were rarely
reported no sample bias was established
between sample recovery and grade.
Core recovery for recent drilling is >95%
with the mineral zones having virtually
100% recovery.
No evidence has been found for any
relationship between sample recovery and
copper grade and there are no biases in
the sampling with respect to copper grade
and recovery.
All KGL RC and diamond core samples
are geologically logged. Logging in
conjunction with multi-element assays is
appropriate for mineral resource
estimation.
Core samples are also orientated and
logged for geotechnical information.
All logging has been converted to
quantitative and qualitative codes in the
KGL Access database.
All relevant intersections were logged.
Paper logs existed for the historical drilling.
There is very little historical core available
for inspection.
The following describes the recent KGL
sampling and assaying process:
–
RC drill holes are sampled at 1m
intervals and split using a cone
splitter attached to the cyclone to
generate a split of ~3kg;
–
RC sample splits (~3kg) are
pulverized to 85% passing 75
microns.
–
Diamond core was quartered (HQ)
and halved (NQ) with a diamond
saw and generally sampled at 1m
intervals with samples lengths
adjusted at geological contacts;
–
Diamond core samples are
crushed to 70% passing 2mm and
then pulverized to 85% passing 75
microns.
–
Two quarter core field duplicates
were taken for every 20m samples
by Jinka Minerals and KGL
Resources.
–
All sampling methods and sample
sizes are deemed appropriate for
mineral resource estimation
Latest Infill Drilling Results from Rockface
Criteria
Quality of assay
data and
laboratory tests
JORC Code explanation
•
•
•
Commentary
•
Details for the historical sampling are not
available.
•
The KGL drilling has QAQC data that
includes standards, duplicates and
laboratory checks. In ore zones standards
are added at a ratio of 1:10 and duplicates
and blanks 1:20.
Base metal samples are assayed using a
four-acid digest with an ICP AES finish.
Gold samples are assayed by Aqua Regia
with an ICP MS finish. Samples over
1ppm Au are re-assayed by Fire Assay
with an AAS finish.
There are no details of the historic drill
sample assaying or any QAQC.
All assay methods were deemed
appropriate at the time of undertaking.
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 (e.g. standards,
blanks, duplicates, external laboratory checks) and whether
acceptable levels of accuracy (i.e. lack of bias) and precision
have been established.
•
•
•
Verification of
sampling and
assaying
•
•
•
•
The verification of significant intersections by either
independent or alternative company personnel.
The use of twinned holes.
Documentation of primary data, data entry procedures, data
verification, data storage (physical and electronic) protocols.
Discuss any adjustment to assay data.
•
•
•
•
Location of data
points
•
•
•
Accuracy and quality of surveys used to locate 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.
•
•
•
•
•
•
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.
•
•
Data is validated on entry into the MS
Access database, using Database check
queries and Maxwell’s DataShed.
Further validation is conducted when data
is imported into Micromine and Leapfrog
Geo software
Hole twinning was occasionally conducted
at Reward with mixed results. This may be
due to inaccuracies with historic hole
locations rather than mineral continuity
issues.
For the resource estimation below
detection values were converted to half the
lower detection limit.
For the KGL drilling surface collar surveys
were picked up using a Trimble DGPS,
with accuracy to 1 cm or better.
Downhole surveys were taken during
drilling with a Ranger or Reflex survey tool
at 30m intervals
All drilling by Jinka Minerals and KGL is
referenced on the MGA 94 Zone 53 grid.
All downhole magnetic surveys were
converted to MGA 94 grid.
For Reward there are concerns about the
accuracy of some of the historic drillhole
collars. There are virtually no preserved
historic collars for checking.
There is no documentation for the
downhole survey method for the historic
drilling.
Topography was mapped using Trimble
DGPS and LIDAR
Drilling at Rockface was on nominal 50m
centres with downhole sampling on 1m
intervals.
Drilling at Reward was on 25m spaced
sections in the upper part of the
mineralisation extending to 50m centres
with depth and ultimately reaching 100m
Latest Infill Drilling Results from Rockface
Criteria
JORC Code explanation
Commentary
•
•
•
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.
•
•
spacing on the periphery of mineralisation.
For Reward shallow oxide RC drilling was
conducted on 80m spaced traverses with
holes 10m apart.
The drill spacing for all areas is appropriate
for resource estimation and the relevant
classifications applied.
A small amount of sample compositing has
been applied to some of the near surface
historic drilling.
Holes were drilled perpendicular to the
strike of the mineralization; the default
angle is -60 degrees, but holes vary from 45 to -80.
Drilling orientations are considered
appropriate and no obvious sampling bias
was detected.
Sample security
•
The measures taken to ensure sample security.
•
Samples were stored in sealed polyweave
bags on site and transported to the
laboratory at regular intervals by KGL staff
or a transport contractor.
Audits or reviews
•
The results of any audits or reviews of sampling techniques
and data.
•
The sampling techniques are regularly
reviewed internally and by external
consultants.
1.2
Section 2 Reporting of Exploration Results
(Criteria listed in the preceding section also apply to this section.)
Criteria
Mineral tenement
and land tenure
status
Exploration done
by other parties
JORC Code explanation
• Type, reference name/number, location and ownership
including agreements or material issues with third
parties such as joint 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.
• Acknowledgment and appraisal of exploration by other
parties.
Commentary
• The Jervois Project is within EL25429 and
EL28082 100% owned by Jinka Minerals and
operated by Kentor Minerals (NT), both wholly
owned subsidiaries of KGL Resources.
• The Jervois Project is covered by Mineral Claims
and an Exploration licence owned by KGL
Resources subsidiary Jinka Minerals.
•
Previous exploration was primarily conducted by
Reward Minerals, MIM and Plenty River.
Latest Infill Drilling Results from Rockface
Criteria
Geology
JORC Code explanation
• Deposit type, geological setting and style of
mineralisation.
Drill hole
Information
•
•
Data aggregation
methods
•
•
•
Relationship
between
mineralisation
widths and
intercept lengths
•
Diagrams
•
•
•
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:
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.
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 clearly stated.
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 nature should be repor
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