Final High Grade Nickel Sulphide Assays 5A
Released
Released
Announcement PDF
ASX:ESR
30 August 2022
Final High-Grade Results Received for Spargoville 5A
HIGHLIGHTS
High-grade results over minable widths returned from final two holes below the 5A Open Pit:
SPDD019 – 4.34m* @ 3.58% Ni from 71.46m including 1.40m @ 7.79% Ni
SPDD020 – 8.03m* @ 3.17% Ni from 61.0m including 2.63m @ 9.23% Ni
Water removal from the open pit is complete allowing preparation for the extraction of the bulk
metallurgical sample to begin
JORC Resource Estimate work to commence with results anticipated in the following weeks
Blending for composite float test samples being finalised
Estrella Resources Limited (ASX: ESR) (Estrella or the Company) is pleased to announce the receipt of
assays for the final two resource and metallurgical diamond holes at the Company’s Spargoville Nickel
Project 5A Mine, located approximately 20km Southwest of Kambalda, Western Australia.
Both SPDD019 and SPDD020 returned very high grades from the northern and central portions of the
deposit. With receipt of these assays, work on a new Resource Estimate can be finalised within a few
weeks. Composite assays from the last holes are presented in Table 1 with the full assay listing in Table 3
at the end of this announcement.
Estrella Managing Director Chris Daws commented:
“The results which Estrella has received from the Spargoville nickel project will permit the
commencement of work on an updated Resource Estimation and I am very confident that the highgrade assays we have unearthed places us in a strong position to define a robust resource.
The completion of drilling also allows the Company to proceed with bulk sampling, de-risking the
project from a resource as well as metallurgical perspective.
Estrella has sought to broaden its focus to include the Spargoville project and the 5A nickel deposit
precisely because it contains high-grade mineralisation at a time when the price and underlying
fundamentals of nickel demand are strong.
I am exceptionally pleased with the progress we have made to date, which positions the Company to
meet its target of bringing Spargoville into operation next year should the DFS be favourable.”
* Down hole widths quoted. For true widths refer to Table 1
_________________________________________________________________________________
Office Address London House, Level 11, 216 St Georges Terrace, PERTH WA 6000 Postal Address GPO Box 2517, PERTH WA 6831
Phone +61 8 9481 0389 Fax +61 8 9463 6103
Email info@estrellaresources.com.au
Figure 1: Spargoville 5A Open Pit digital model with recent diamond drilling
Table 1: Composite Significant Intercepts
Hole ID
Metallurgical
Length
From (m) To (m)
Type
(m)
T.W.
(m)
Ni %
Cu % Co ppm Pt g/t Pd g/t
2.76
Total
S%
Fe %
MgO% As ppm
SG
71.46
75.80
4.34
3.58
0.17
655
0.11
0.26
7.9
17.4
14.9
733
3.1
SPDD019 including
TRANS
73.15
75.80
2.65
5.19
0.26
970
0.17
0.41
12.3
22.5
11.0
864
3.2
including
TRANS
74.40
75.80
1.40
7.79
0.4
1462
0.23
0.63
19.1
28.5
5.3
1212
3.4
61.00
69.03
8.03
3.17
0.19
730
0.18
0.28
7.9
12.3
20.3
1190
2.7
66.40
69.03
2.63
9.23
0.60
2071
0.56
0.86
25.1
22.6
5.4
1421
2.9
SPDD020
Total
including
TRANS
5.20
Results for SPDD001 to SPDD018 have previously been released to the market
Compared to the previous Resource Estimate, the Company is expecting the amount of transitional material
below the Open Pit to rise and the amount of Fresh material to fall. The Company is investigating the
economics of two separate production streams for the Transitional and Fresh material which will feed into
the Definitive Feasibility Study.
The removal of drill water from the base of the open pit has been completed and cleaning up of the ramp
and pit floor will commence within weeks. Removal of the bulk sample is expected to be completed in
October. This sample of Transitional material will be tested at an alternative treatment facility to the
Kambalda Concentrator and will be extending on successful bench-scale tests conducted in 2019.
The drill core obtained from the recent drilling is being used for mineralogical analysis to zero in on the
Transitional to Fresh boundary. Visual observation of the core suggests that the Transitional boundary is
situated lower in the profile than the previous resource had estimated. Semi-quantitative XRD analysis is
underway on all intersections and blending of Transitional and Fresh composites will be sent to a Perth
laboratory for further flotation tests (see Shareholder Presentation released to the ASX on 13 March 2019).
The Company looks forward to updating shareholders when the Resource Estimate has been completed
and as the results of metallurgical and mineralogical studies begin to arrive.
The Board has authorised for this announcement to be released to the ASX.
FURTHER INFORMATION CONTACT
Christopher J. Daws
Managing Director
Estrella Resources Limited
+61 8 9481 0389
info@estrellaresources.com.au
Media:
David Tasker
Managing Director
Chapter One Advisors
E: dtasker@chapteroneadvisors.com.au
T: +61 433 112 936
Competent Person Statement
The information in this announcement relating to Exploration Results is based on information compiled by Steve
Warriner, who is the Exploration Manager of Estrella Resources, and a member of The Australasian Institute of
Geoscientists. Mr. Warriner has sufficient experience relevant to the style of mineralisation and type of deposit under
consideration, and to the activity he is undertaking to qualify as a Competent Person as defined in the 2012 Edition of
the “Australasian Code for Reporting of Exploration Results, Mineral Resource and Ore Reserves”. Mr. Warriner
consents to the inclusion in the report of the matters based on his information in the form and context in which it
appears.
Forward Looking Statements
This announcement contains certain forward looking statements which have not been based solely on historical facts
but, rather, on ESR’s current expectations about future events and on a number of assumptions which are subject to
significant uncertainties and contingencies many of which are outside the control of ESR and its directors, officers and
advisers.
Table 3: Collar and Survey Details
Hole ID
SPDD019
SPDD020
Easting
357977.5
357981.5
Northing
6530214.7
6530249.5
RL
347.3
345.1
Depth
100
85
Dip
-50
-46
Azimuth
270
286
Status
Complete
Complete
Table 4: Assay results
Hole ID
m From
m To
Interval
Sample #
Ni %
Cu%
Co
ppm
Pt
g/t
Pd
g/t
S%
Fe %
MgO
%
As
g/t
SG
SPDD019
SPDD019
SPDD019
SPDD019
SPDD019
SPDD019
SPDD019
SPDD019
SPDD019
SPDD019
SPDD019
SPDD019
SPDD019
SPDD019
SPDD019
SPDD019
SPDD019
SPDD019
SPDD019
SPDD019
SPDD019
SPDD019
SPDD019
SPDD019
SPDD019
SPDD019
SPDD019
SPDD019
SPDD019
SPDD019
SPDD019
SPDD019
51.5
53
54.35
55.45
55.95
57.11
58.27
59.43
60.6
61.7
63.16
64.62
66.08
67.54
69
69.92
71.46
72.25
72.5
73.15
73.45
74
74.4
74.8
75.2
75.5
75.8
77
78
79
80
81
53
54.35
55.45
55.95
57.11
58.27
59.43
60.6
61.7
63.16
64.62
66.08
67.54
69
69.92
71.46
72.25
72.5
73.15
73.45
74
74.4
74.8
75.2
75.5
75.8
77
78
79
80
81
82
1.5
1.35
1.1
0.5
1.16
1.16
1.16
1.17
1.1
1.46
1.46
1.46
1.46
1.46
0.92
1.54
0.79
0.25
0.65
0.3
0.55
0.4
0.4
0.4
0.3
0.3
1.2
1
1
1
1
1
CBR115665
CBR115666
CBR115667
CBR115668
CBR115669
CBR115670
CBR115671
CBR115672
CBR115673
CBR115675
CBR115676
CBR115677
CBR115678
CBR115679
CBR115680
CBR115681
CBR115682
CBR115683
CBR115684
CBR115685
CBR115687
CBR115688
CBR115689
CBR115690
CBR115691
CBR115692
CBR115693
CBR115694
CBR115695
CBR115696
CBR115697
CBR115698
0.32
0.21
0.20
0.62
0.37
0.30
0.26
0.39
0.26
0.21
0.20
0.22
0.22
0.24
0.17
0.27
0.86
1.55
0.54
3.28
0.49
2.83
7.48
5.73
11.30
7.12
0.28
0.13
0.36
0.21
0.02
0.02
0.00
0.00
0.00
0.02
0.01
0.01
0.01
0.01
0.00
0.00
0.01
0.00
0.00
0.00
0.00
0.00
0.00
0.07
0.00
0.19
0.01
0.09
0.36
0.30
0.44
0.54
0.02
0.03
0.02
0.02
0.01
0.01
75
71
77
636
134
78
69
78
91
97
102
101
93
97
69
97
95
256
86
581
118
494
1415
843
1870
1865
92
74
98
92
49
55
<0.005
<0.005
0.01
0.01
0.01
0.02
0.04
0.02
0.02
0.01
0.01
<0.005
<0.005
<0.005
<0.005
<0.005
<0.005
<0.005
<0.005
0.39
0.02
0.03
0.20
0.18
0.22
0.33
0.02
0.02
0.02
0.02
0.01
0.01
0.01
0.01
0.01
0.04
0.01
0.04
0.07
0.03
0.02
0.01
0.02
<0.001
0.00
0.00
0.00
0.00
0.00
0.02
0.01
0.22
0.03
0.17
0.25
0.03
0.39
2.12
0.03
0.01
0.02
0.07
0.01
0.01
<0.01
0.01
0.06
0.01
0.10
0.08
0.09
0.05
0.10
0.14
0.17
0.05
0.03
0.08
0.05
0.05
0.04
2.00
0.03
5.98
0.49
6.36
18.30
15.40
23.90
19.90
0.40
0.41
0.76
0.51
0.07
0.09
5.77
6.31
6.63
9.31
8.51
6.89
6.39
6.57
5.27
6.35
6.46
5.42
5.08
5.26
3.91
4.80
5.46
12.15
11.25
20.00
10.80
16.95
26.20
28.60
28.00
32.00
5.77
6.93
7.67
7.44
6.96
6.25
23.38
25.20
26.20
21.47
25.45
26.12
25.04
23.21
26.78
31.01
30.76
33.49
33.49
33.83
27.69
30.84
23.63
18.57
20.06
14.67
22.14
15.12
7.76
6.10
4.03
2.72
4.29
5.24
5.32
5.39
5.84
5.52
164
127
91
783
287
169
249
516
348
146
8
824
896
645
197
801
517
636
458
231
653
215
323
185
1400
3410
523
22
46
89
10
18
2.705
2.755
2.806
2.644
2.822
2.771
2.751
2.669
3.003
2.916
2.9
2.741
2.868
2.846
2.792
2.782
2.994
2.585
2.925
2.741
3.078
2.969
3.318
3.21
3.582
3.483
2.605
2.689
2.858
2.758
2.774
2.88
SPDD020
SPDD020
SPDD020
SPDD020
SPDD020
SPDD020
SPDD020
SPDD020
SPDD020
SPDD020
SPDD020
SPDD020
SPDD020
SPDD020
SPDD020
SPDD020
SPDD020
SPDD020
SPDD020
SPDD020
SPDD020
SPDD020
SPDD020
SPDD020
SPDD020
SPDD020
SPDD020
SPDD020
SPDD020
SPDD020
SPDD020
41.9
43.2
45
46
47
48
48.89
50
51
52
53
54.18
55
56
57
58.68
59.25
59.92
61
61.68
62.97
64.52
65.35
66.4
67.27
68.02
68.7
69.03
70
71
73
43.2
45
46
47
48
48.89
50
51
52
53
54.18
55
56
57
58.68
59.25
59.92
61
61.68
62.97
64.52
65.35
66.4
67.27
68.02
68.7
69.03
70
71
73
74
1.3
1.8
1
1
1
0.89
1.11
1
1
1
1.18
0.82
1
1
1.68
0.57
0.67
1.08
0.68
1.29
1.55
0.83
1.05
0.87
0.75
0.68
0.33
0.97
1
2
1
CBR115699
CBR115700
CBR115701
CBR115703
CBR115704
CBR115705
CBR115706
CBR115707
CBR115708
CBR115709
CBR115710
CBR115711
CBR115712
CBR115713
CBR115714
CBR115716
CBR115717
CBR115718
CBR115719
CBR115720
CBR115721
CBR115722
CBR115723
CBR115724
CBR115725
CBR115726
CBR115727
CBR115728
CBR115730
CBR115731
CBR115732
0.25
0.65
0.32
0.34
0.72
0.75
0.26
0.18
0.37
0.62
0.68
0.19
0.13
0.12
0.11
0.45
0.15
0.29
1.29
0.31
0.25
0.46
0.37
5.75
8.08
14.30
1.33
0.07
0.16
0.02
0.03
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.00
0.00
0.00
0.00
0.01
0.00
0.01
0.01
0.04
0.01
0.01
0.00
0.00
0.02
0.01
0.96
0.00
0.77
0.07
0.03
0.03
0.02
0.01
108
199
124
116
415
237
195
102
168
221
204
102
93
92
93
97
107
113
276
121
100
127
95
1225
1625
3460
253
45
111
48
61
0.01
0.01
0.01
0.01
0.02
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
<0.005
<0.005
0.01
0.02
0.02
0.98
0.54
0.11
0.03
0.01
0.02
0.01
0.01
0.01
0.03
0.01
0.01
0.03
0.02
0.02
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.00
0.00
0.01
0.05
0.03
2.06
0.14
0.19
0.08
0.01
0.05
0.01
0.01
<0.01
0.01
0.01
0.01
0.01
0.01
0.11
0.08
0.06
0.08
0.03
0.04
0.02
0.03
0.13
0.13
1.06
0.17
0.14
0.04
0.03
0.56
0.16
13.90
21.80
41.10
2.51
0.08
0.38
0.09
0.09
9.04
7.40
6.61
7.64
10.20
9.62
6.79
8.17
9.30
9.80
10.10
7.32
7.52
7.45
8.19
9.43
8.60
6.76
8.68
5.88
5.44
5.99
13.00
17.90
22.80
27.70
11.70
8.03
5.85
5.64
6.38
22.22
22.22
23.46
25.04
18.49
21.56
24.04
23.63
23.13
21.89
21.39
22.63
23.63
22.47
20.64
14.23
21.47
26.03
26.45
29.35
34.49
24.13
19.81
9.60
5.92
0.17
3.25
4.48
4.59
4.99
5.24
85
185
166
323
984
902
203
162
403
240
751
114
201
86
85
96
352
468
549
1065
1425
297
1750
2940
643
438
494
54
86
6
16
2.79
2.546
2.583
2.472
2.591
2.237
2.581
2.921
2.936
2.86
2.617
2.63
2.988
2.99
2.791
2.582
2.759
2.976
2.834
2.538
2.551
2.851
2.743
2.78
2.714
3.127
1.343
2.715
2.621
2.749
2.591
APPENDIX 1 JORC TABLE 1 - JORC CODE, 2012 EDITION – TABLE 1
Section 1 Sampling Techniques and Data
(Criteria in this section apply to all succeeding sections.)
Criteria
JORC Code explanation
Commentary
Sampling
Nature and quality of sampling (e.g. cut Diamond core is HQ sized. Core samples are
techniques
channels, random chips, or specific
quarter cut with one quarter sent to the lab for
specialised
industry
standard
assay and three quarters kept frozen at Carr
measurement tools appropriate to the
Boyd for metallurgical sampling. Sulphide
minerals under investigation, such as
determinations for visual estimates are
down hole gamma sondes or handheld
assisted with the use of a handheld Bruker
XRF
instruments,
etc.).
These
XRF.
examples should not be taken as
limiting the broad meaning of sampling.
Include reference to measures taken to All core is measured against actual drill depths
ensure sample representivity and the
and recovery calculated to ensure samples are
appropriate
calibration
of
any
representative. Core is cut perpendicular to
measurement tools or systems used.
sulphide/olivine layering.
Drilling
techniques
Drill sample
recovery
Aspects of the determination of
mineralisation that are material to the
Public Report.
Intersections
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
30g 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
Nickel mineralisation consists of contact
massive
sulphides
(pyrite,
pyrrhotite,
pentlandite, violarite, chalcopyrite) typically
less than 1.5m thick, overlain by matrix
sulphides and disseminated sulphides. At 5A
the sulphides have been weathered to produce
supergene
sulphides
of
pyrite
and violarite.
Nickel and multielement analysis is performed
by 4 acid digest and a combination of ICP-MS
and ICP-OES analysis techniques. Gold and
PGEs are determined by a fire assay fusion,
followed by aqua regia digest and atomic
absorption spectrometer (AAS) finish.
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, facesampling bit or other type, whether core
is oriented and if so, by what method,
etc).
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.
Diamond core is predominantly HQ triple tube
are visually assessed to
determine oxide, transitional and fresh nickel
mineral species. Handheld XRF assists in the
identification of sulphide and arsenic levels.
to maximise recovery.
All core is measured against actual drill depths
and recovery calculated to ensure samples are
representative and to identify core loss.
Logs will include lithology, oxidation, mineral
species, RQD, alteration and gangue mineral
determination.
Criteria
Logging
Subsampling
techniques
and sample
preparation
Quality of
assay data
and
laboratory
tests
Verification
of sampling
and
assaying
JORC Code explanation
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.
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 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.
Commentary
Detailed drill hole logs are produced on 100%
The
verification
of
significant
intersections by either independent or
alternative company personnel.
Significant intersections have been reviewed
The use of twinned holes.
Several of the current drillholes twin existing
of the core as per current industry best practise.
All core is photographed and all digital and
paper records will be kept.
Core is ¼ cut for assay with the remaining ¾
stored in a freezer for metallurgical sampling.
Procedures ensure the appropriateness of
samples in line with this style of high-grade
mineralisation.
Standards and blanks have been inserted
into the sample stream at a ratio of 20:1
The size of the core is adequate for this
style of mineralisation.
Standards and blanks are inserted into the
sample stream at a ratio of 20:1
Handheld XRF results are for internal use
within the company and will not be
published. A Bruker XRF instrument was
recently purchased by the company.
by alternative company personnel.
drilling. SPDD005 twins 5ADD002; SPDD009
twins 5ADD018; SPDD018 twins KWC0006.
Documentation of primary data, data
entry procedures, data verification, data
storage (physical and electronic)
protocols.
Drill hole is captured into the LogChief digital
Discuss any adjustment to assay data.
No adjustments are necessary to assay data
system and later validated in 3D using
Micromine. All core will be photographed and
all digital and paper records will be kept.
for this style of mineralisation.
Criteria
Location of
data points
JORC Code explanation
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.
Commentary
Surface topography is derived from drill hole
collars and the historical mining pick-ups. Drill
holes were set out using an RTK theodolite and
final hole pickups will use DGPS or similar.
Initial drill hole line-ups will be controlled using
a Reflex Azimuth Alligner and drillholes are
surveyed using a Reflex North Seeking Gyro.
Specification of the grid system used.
The MGA94/51 grid system is used.
Quality and adequacy of topographic
control.
Topographic control is considered good. The
Data spacing for
Exploration Results.
of
The Mineral Resource area is drilled on roughly
a 20 x 10m spacing.
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 drill data spacing and sampling is
The drill line and drill hole orientation is oriented
as close as practicable to perpendicular to the
orientation of the general mineralised
orientation.
Sample
security
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.
The measures taken to ensure sample
security.
Audits or
reviews
The results of any audits or reviews of
sampling techniques and data.
Visualisation of drilling data will be completed
Data
spacing
and
distribution
Orientation
of data in
relation to
geological
structure
reporting
open pit was surveyed by production personnel
during mining and this has been checked
recently using an RTK system and found to be
accurate in MGA94/51.
adequate to establish the geological and grade
continuity required for the Mineral Resource
estimate.
Significant intersections and metallurgical
samples are composited based upon individual
assays received as per current industry
practise.
Drillholes will intersect mineralisation at a range
of angles. These angles will be measured for
each intersection.
Industry standard sample security standards
will be followed. Samples will remain in the
control of Company personnel up until delivery
to the lab.
in three dimensional software and QA/QC
sampling review will be ongoing. Lab visits will
occur.
Section 2 Reporting of Exploration Results
(Criteria listed in the preceding section also apply to this section.)
Criteria
JORC Code explanation
Commentary
Mineral
Type, reference name/number,
ESR has entered into agreements to hold a
tenement and
location and ownership including
100%
interest
in
all
nickel
land tenure
agreements or material issues with
rights to the project.
status
third parties such as joint ventures,
There are no known impediments to operate in
partnerships, overriding royalties,
the area.
native title interests, historical sites,
The area is held under M15/395 and M15/703.
wilderness or national park and
Exploration
done by other
parties
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.
Anaconda explored the area for nickel between
1967 and 1972. These programs led to the
discovery of nickel mineralisation. Anaconda
entered into a joint venture with Union-Minere
between 1972 and 1975.
Metals Exploration acquired the Widgiemooltha
leases between 1979 and 1983. They did not
undertake any exploration activity during this
time.
By 1983 Western Mining Corporation (WMC)
had
acquired
the
Widgiemooltha leases. WMC reviewed the
project’s gold potential in 1996 following a
completed percussion and diamond drill
program. They completed a technical
evaluation of Munda as a gold / nickel resource
in 1998.
Amalg Resources held the package from 1993
to 2002.
The tenements were acquired by Titan
Resources in late 2003 as part of the
acquisition of the Central Widgiemooltha
tenements.
Breakaway Resources explored on the
tenements until 2004.
Tychean held the tenure between 20013 and
2015 upon which the tenure was acquired by
Maximus Resources.
Geology
Deposit type, geological setting and
style of mineralisation.
All Widgiemooltha Dome nickel deposits are
Kambalda-style deposits. 1A, 5a, 5B and 5D
deposits are type 1A massive-matrix style.
Nickel mineralisation is located along the
contact
of
basalt
and
ultramafic
rocks.
High
grade
nickel
mineralisation
is
in
the
form
of
poddy contact shoots, with a broad
disseminated component. The contact itself is
quite disturbed as the area has been
extensively deformed, with numerous footwall
thrusts of thin packages of mineralised
ultramafic. The hanging wall ultramafic unit
varies from talc, tremolite, and serpentinised
Criteria
JORC Code explanation
Commentary
altered ultramafics. Disseminated nickel
mineralisation is generally in serpentinised
ultramafic.
The stratigraphy at a deposit scale consists of
the
Archaean
Mt
Edwards basalt overlain by the Widgiemooltha
Komatiite.
The
ultramafic succession consists of a series of
flows with intercalated sediments. It is
approximately 250m thick and displays
carbonate alteration and serpentinisation. The
mineral assemblages are talc-antigoritechlorite-magnetite
and
talc-magnesiteamphibolite-magnetite.
Drill hole
Information
Data
aggregation
methods
Relationship
between
mineralisation
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.
All relevant drillhole information can be found in
the Tables and sections within the
announcement.
In reporting Exploration Results,
weighting averaging techniques,
maximum and/or minimum grade
truncations (e.g. cutting of high
grades) and cut-off grades are
usually Material and should be
stated.
Where
aggregate
intercepts
incorporate short lengths of highgrade 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.
Drill hole summary results are included in this
No information is excluded.
release. The results reported include all
mineralisation which is stated in the relevant
tables.
A nominal cut off of 1.0% Ni was used to define
the drill intersections composites of low-grade
and high-grade respectively.
No metal equivalents have been stated
The drill line and drill hole orientation is oriented
as close to 90 degrees to the orientation of the
anticipated
mineralised
orientation
as
Criteria
widths and
intercept
lengths
Diagrams
Balanced
reporting
Other
substantive
exploration
data
Further work
JORC Code explanation
If the geometry of the mineralisation
with respect to 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 (e.g. ‘down hole length, true
width not known’).
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.
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.
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.
The nature and scale of planned
further work (e.g. tests for lateral
extensions or depth 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.
Commentary
practicable.
The majority of the drilling intersects the
mineralisation between 45 to 80 degrees.
Maps and sections with drill hole locations are
included in
appropriate.
the
announcement
when
All new drillhole information within this
announcement is reported
Everything meaningful and material is
disclosed in the body of the report.
Geological observations are included in the
report.
There are arsenic species within the deposit
which can be semi-quantified by XRF and fully
quantified by assay analysis.
Further work has been recommended in the
body of the announcement.
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