Skip to main content

AI assistant

Sign in to chat with this filing

The assistant answers questions, extracts KPIs, and summarises risk factors directly from the filing text.

ESTRELLA RESOURCES LIMITED Capital/Financing Update 2021

Apr 8, 2021

64878_rns_2021-04-08_4d016ebd-9c2f-4fd4-869d-589152a79c62.pdf

Capital/Financing Update

Open in viewer

Opens in your device viewer

9 April 2021

==> picture [145 x 60] intentionally omitted <==

ASX ANNOUNCEMENT

Carr Boyd Exploration Update

HIGHLIGHTS

  • Seismic survey over the T5 to Drinkwater basal contact recently completed by Ultramag. Data processing and interpretation is underway. Project will qualify for R&D rebate (Figure 1 & 2).

  • Two diamond core holes completed to collect rock properties (density & velocity readings) to augment the seismic modelling process and to confirm position of the basal contact (Figure 2).

  • Mapping of the Carr Boyd Intrusive Complex 50% complete, several new prospects identified with nickel gossan float material located at surface (Figure 3).

  • Phase 2 diamond drilling at T5 Prospect completed, Phase 3 infill and step-out holes underway. o CBDD042A intersected 4.9m @ 0.96% Ni, 0.35% Cu in feeder zone, net-textured sulphides

  • Additional Downhole Electromagnetic surveys utilising a very low resistance loop highlighted additional potential sulphide anomalism which will be tested in the next few weeks (Figure 4).

  • Combination Reverse Circulation / Diamond Drill Rig has arrived on site (Figure 5) to boost regional exploration along 30km of untested basal contact.

Estrella Resources Limited (ASX: ESR) (Estrella or the Company) is pleased to update the market with its progress at the Carr Boyd Nickel Project in the Eastern Goldfields, Western Australia.

R&D Hard-Rock Seismic Survey by Ultramag and 3D Geological Interpretation

The Seismic Program comissioned by Estrella Resources utilised a new type of impact vibrator called an e-Vibe (shown in Figure 1) which is operated by Ultramag. This is the first time this system combined with new seismic nodes from Schlumberger has been deployed in a hard-rock, Archean nickel environment. This compact seismic source was successfull in allowing the Company to access areas previously inaccessible to conventional seismic machinery due to their cost, size and environmental impact.

==> picture [231 x 152] intentionally omitted <==

==> picture [239 x 152] intentionally omitted <==

Figure 1: R&D Seismic Survey conducted by Ultramag enabled very low environmental impact seismic surveying at Carr Boyd, allowing the company to image the prospective basal contact at depth ahead of drill planning. The e-Vibe system enabled access into areas where traditional seismic systems were too large and destructive to operate effectively.

Ultramag have recently completed a 20 linear kilometre seismic acquisition process (Figure 2) and initial data available to the Company shows the experimental system has successfully performed to the


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 [email protected]

==> picture [145 x 60] intentionally omitted <==

specifications of the experiment. A further 8-10 weeks of data processing will take place before the Company will have a full 3D interpretation of T5 and the embayment area. The Company will update the market with the modelled results when available.

The Carr Boyd basal contact is the most prospective horizon within the Intrusive Complex. Historically it been difficult to intersect in drilling due to its variable dip and in places, faulted nature. The use of seismic will vastly improve the success rate of any targeted drilling at depth.

The company has comissioned Graeme Hird from Rock Solid Seismic to assist with the interpretation. Mr Hird is Australia’s most experienced hard-rock seismic interpreter. The seismic survey is a necessary derisking tool employed by the company that will increase the success rate of deeper drilling targeting the basal contact for nickel sulphides. Interpretation will utilise all new and historical, geological and geophysical datasets available to the company.

Drilling Conducted for the Seismic Program

Diamond drill holes CBDD045 and CBDD046 were completed to gather geophysical rock properties (density and velocity) as well as geological information to assist in the seismic modelling and interpretation of the basal contact. The holes were drilled just south and west of the Carr Boyd Mine (Figure 2) and this information will be incorporated into the seismic data processing and interpretation as a part of the R&D project.

The holes were planned to intersect the basal contact in the vacinity of seismic lines and were not targeting sulphides directly (Figure 2). The holes intersected chilled pyroxenitic rubble breccias clearly associated with the basal contact and DHEM will be completed on the holes to complete the geophysical anyalysis of the contact zone.

==> picture [429 x 334] intentionally omitted <==

Figure 2: Locations of CBDD045 and CBDD046 with respect to the Seismic lines and T5 Mineralised Contact

==> picture [145 x 60] intentionally omitted <==

Regional Potential

Mapping of the Carr Boyd Intrusive Complex to assist in the 3D structural and geological modelling and interpretation work has led the Company to an updated interpretation of the local geology with respect to nickel potential. Regional stratigraphy and geological context has now been established. Geological vectors known to be important for nickel accumulation are pointing south along the T5 Feeder Zone to an interpreted embayment at the base of the Intrusive Complex where pyroxenite intrusions have been mapped crosscutting and assimilating sulphidic sediments. The resulting sulphides, once exposed and assimilated by the pyroxenites, become progressively enriched in nickel and settle onto the base of the embayment. Nickel gossan float material can be found at surface which represent this mineralised material on the basal contact (Figure 3).

The company believes that the T5 nickel mineralisation and the Carr Boyd Mine mineralisation may have a common source at depth within the embayment. Additional work on structural offsets within the complex should allow Estrella’s geological team to begin to pinpoint these locations, and together with the updated 3D interpretation, to drill test them. A detailed drone DTM and aerial photography survey has been completed along the length of the contact zone (Figure 3) to assist with the targeted exploration program.

==> picture [452 x 437] intentionally omitted <==

Figure 3: Mapped basal contact in relation to sulphidic sediments, assimilation zones where sulphides enter the intrusion and nickel sulphides at surface (NiS). Mapping reveals that the paleo-gravity direction is to the west (left) with younging to the east, confirming the mapped embayment as a significant geological feature.

==> picture [145 x 60] intentionally omitted <==

T5 Drilling and Downhole Electromagnetics (DHEM)

The Company has completed Phase 2 drilling at the T5 discovery area. To date, 15 holes have been completed at the T5 Prospect for just over 7,659m. Significant intercepts are presented in Table 1 and in Figures 4 and 6. Drilling has revealed the T5 Prospect to be a feeder zone along which sulphides have travelled. Due to the deep nature of drilling at T5, de-risking work will be undertaken to enhance drill success offuture drilling. This de-risking will be based on seismic interpretation, further structural work and advanced downhole electromagnetics.

DHEM results recently received by the Company show the T5 Conductor continuing to increase with depth (Figure 4). In particular, DHEM and drill results confirm a steep south plunge to the sulphides at this location.

The next round of infill and step-out drilling has commenced and will test the T5 contact to the north and south of known mineralisation in order to expand this zone laterally. Deeper drilling will be planned once results of the Seismic Survey have been fully interpreted and small-scale faulting of the contact has been taken into account.

Estrella Managing Director Chris Daws commented:

“The experimental seismic program was completed successfully and the initial results are promising, which should allow our geologists to see the basal contact at depth for the very first time. The combination of technology and geological science coming togther at Carr Boyd is extremely exciting and eye opening. Combined with the regional mapping works and the drill rig which continues to uncover mineralisation at our flagship Carr Boyd Nickel & Copper Project, we are contining to work at full stride so that we can unlock the source of the nickel and copper sulphides discovered to date at the project. I look forward to the next round of drilling results and the seismic-geoligical interpretations.”

Combination Reverse Circulation / Diamond Drill Rig has arrived on site

Topdrive Drillers have supplied Estrella Resources a track-mounted Combination Diamond / Reverse Circulation Drill Rig (RC/DD) capable of up to 400m RC and 1,800m NQ2 diamond holes. This rig (Figure 5) will enable the Company to drill relatively cheap pre-collars ahead of diamond tails which will reduce the overall costs on deeper drilling. The RC/DD rig will also enable a cost-effective expansion of the regional exploration effort into the interpreted embayment in Figure 3.

Proposal of Works approvals have been received for the company to progress exploration north, south and east along the basal contact covering Dunn, Drinkwater, Schmidt, Sir William Wallace, Tregurtha and Gossan Hill Prospects (Figure 2) as well as other prospects further afield along the basal contact. The company intends to use the RC capability of the rig to test and refine the Seismic Interpretation of the basal contact ahead of deeper diamond drilling of targets generated.

==> picture [145 x 60] intentionally omitted <==

==> picture [451 x 284] intentionally omitted <==

Figure 4: T5 Basal Contact Longsection showing significant intersections >0.5% nickel and a broadening zone of Downhole Electromagnetic conductors.

==> picture [451 x 338] intentionally omitted <==

Figure 5: Track-mounted Combination RC - Diamond Drill Rig from Topdrive Drillers to arive in early April

==> picture [145 x 60] intentionally omitted <==

==> picture [228 x 297] intentionally omitted <==

==> picture [228 x 296] intentionally omitted <==

==> picture [228 x 297] intentionally omitted <==

==> picture [228 x 296] intentionally omitted <==

Figure 6: Cross-sections through the T5 Feeder Zone. The intersections to date have been complicated by a set of flat faults and sheared dyke intrusion along the basal contact. Further DHTEM and seismic results will assist in Phase 3 targeting.

==> picture [145 x 60] intentionally omitted <==

Table 1: Significant Intersection Summary, SG adjusted

Hole m From
m To
Interval
Ni% Cu% Co% 2PGE* **Ag g/t **
CBDD028 165.2
167
1.8
0.73 0.34 0.04 0.65 1.78
including 165.2
165.6
0.4
1.12 1.07 0.06 0.91 6.80
CBDD029 NSA - Hole did not test T5 contact
CBDD030 431.6
445.5
13.9
1.18 0.39 0.05 0.45 1.61
including 436.3
439.5
3.2
3.19 0.64 0.14 0.71 2.56
CBDD031 NSA - Hole did not test T5 contact
CBDD032 NSA - Fault blank,T5 contact not tested
CBDD033 368.5
388.6
20.1
1.04 0.67 0.05 0.79 2.45
including 372.52
378.4
5.88
1.39 0.66 0.07 0.90 2.31
and 380.7
382.8
2.1
1.37 0.54 0.06 2.34 2.61
and 386.15
388.6
2.45
1.65 2.01 0.08 0.83 7.31
CBDD034 NSA - Fault blank,T5 contact not tested
CBDD035 516.8
524.85
8.05
0.83 0.49 0.03 0.62 2.84
including 516.8
520.5
3.7
1.18 0.76 0.04 0.97 5.29
CBDD036 505.6
511
5.4
0.87 0.76 0.04 0.61 3.25
including 506.15
508.1
1.95
1.34 1.41 0.05 0.93 6.12
CBDD037 NSA - Fault blank,T5 contact not tested
CBDD039 NSA - Sheared T5 contact,low tenor sulphides
CBDD041 NSA - Sheared T5 contact,low tenor sulphides
CBDD042A
603.7
608.6
4.9
0.96 0.35 0.04 0.29 1.35
including 606.89
608.6
1.71
1.63 0.66 0.07 0.43 3.12
CBDD043 Dyked + sheared T5 contact -Awaiting Assays
CBDD044 Sheared T5 contact
Note: Intervals quoted are downhole lengths, true widths are not known due to faulting
Intervalgrades weighted by downhole length and bulk density, _2PGE refers to Pt + Pd ing/t _

Table 2: Drill hole collar details for T5 Drilling

Hole ID Final
Depth
Easting Northing RL Dip Azimuth Status
CBDD0028 251 367048.96 6673939.6 421.8 -60 90 Completed
CBDD0029 603.8 367004.61 6673939.07 421.6 -70 90 Completed
CBDD0030 495.7 367030.37 6673642.32 418.3 -65 90 Completed
CBDD0031 591.8 366943.09 6674243.14 424.5 -65 90 Completed
CBDD0032 335.6 367279.38 6673941.27 423.3 -65 270 Completed
CBDD0033 450 367397.53 6673657.83 422.2 -65 270 Completed
CBDD0034 412 367361.34 6673941.15 423.5 -65 270 Completed
CBDD0035 581.7 367441.86 6673659.47 423 -65 270 Completed
CBDD0036 576.8 367420 6673620 422.4 -65 270 Completed
CBDD0037 420.8 367425 6673625 422.4 -60 270 Completed
CBDD0039 609.7 367450 6673710 423.6 -65 270 Completed
CBDD0041 480.7 367400 6673500 421.9 -60 270 Completed
CBDD0042A 654.7 367403 6673500 421.9 -70 270 Completed
CBDD0043 495.3 367449 6673940 432 -65 270 Completed
CBDD0044 699.8 367446 6673707 429.8 -70 256 Completed

==> picture [145 x 60] intentionally omitted <==

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 [email protected]

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.

==> picture [144 x 60] intentionally omitted <==

Table 3. List of assay results from CBDD042A

Hole_ID SampleID mFrom mTo Interval Ni% Cu% Co ppm Ag g/t Pt g/t Pd g/t As ppm S% MgO%
CBDD042A ECB10658 589.25 590.75 1.5 0.07 0.01 72 <0.5 0.02 0.01 <5 0.02 21.31
CBDD042A ECB10659 590.75 592.25 1.5 0.08 0.02 75 <0.5 0.02 0.02 <5 0.02 21.47
CBDD042A ECB10660 592.25 593.75 1.5 0.08 0.01 73 <0.5 0.02 0.02 <5 0.02 20.89
CBDD042A ECB10661 593.75 595.25 1.5 0.10 0.02 79 <0.5 0.03 0.03 <5 0.03 20.97
CBDD042A ECB10662 595.25 596.59 1.34 0.23 0.05 128 <0.5 0.06 0.08 <5 0.48 21.31
CBDD042A ECB10663 596.59 597.21 0.62 0.13 0.02 95 <0.5 0.04 0.03 <5 0.31 19.98
CBDD042A ECB10664 597.21 597.93 0.72 0.14 0.07 110 0.50 0.03 0.02 <5 0.61 22.22
CBDD042A ECB10665 597.93 598.55 0.62 0.19 0.74 150 6.80 0.02 0.05 <5 1.66 22.47
CBDD042A ECB10666 598.55 599.48 0.93 0.19 0.07 104 0.60 0.04 0.03 <5 0.34 21.39
CBDD042A ECB10667 599.48 600.75 1.27 0.33 0.27 125 2.50 0.10 0.05 <5 0.56 21.89
CBDD042A ECB10668 600.75 601.75 1 0.29 0.11 115 1.00 0.02 0.01 <5 0.33 22.05
CBDD042A ECB10669 601.75 602.46 0.71 0.31 0.12 140 0.60 0.04 0.03 <5 0.73 21.80
CBDD042A ECB10670 602.46 603.7 1.24 0.37 0.14 184 <0.5 0.13 0.06 <5 1.92 20.89
CBDD042A ECB10671 603.7 604.63 0.93 0.56 0.15 259 0.50 0.30 0.09 <5 3.02 21.47
CBDD042A ECB10672 604.63 605 0.37 1.21 0.26 568 0.70 0.17 0.13 <5 6.59 20.39
CBDD042A ECB10673 605 605.96 0.96 0.43 0.12 200 <0.5 0.04 0.06 <5 2.23 21.89
CBDD042A ECB10674 605.96 606.26 0.3 0.95 0.38 433 1.30 0.05 0.17 <5 5.04 15.90
CBDD042A ECB10675 606.26 606.89 0.63 0.28 0.15 145 <0.5 0.04 0.04 <5 1.50 21.64
CBDD042A ECB10676 606.89 607.71 0.82 0.73 0.34 329 0.90 0.06 0.09 <5 4.10 16.66
CBDD042A ECB10677 607.71 608.6 0.89 2.39 0.93 1055 5.00 0.07 0.60 <5 >10.0 10.43
CBDD042A ECB10678 608.6 609.7 1.1 0.14 0.04 121 <0.5 0.01 0.01 <5 0.61 21.89
CBDD042A ECB10679 609.7 610.82 1.12 0.12 0.03 114 <0.5 0.01 0.00 <5 0.27 21.56
CBDD042A ECB10680 610.82 611.26 0.44 0.20 0.68 149 6.90 0.06 0.04 <5 1.32 19.98
CBDD042A ECB10681 611.26 612.53 1.27 0.11 0.02 103 <0.5 <0.005 0.00 <5 0.27 19.65
CBDD042A ECB10682 612.53 613.28 0.75 0.06 0.02 65 <0.5 0.01 0.00 <5 0.31 12.25
CBDD042A ECB10683 613.28 614.2 0.92 0.12 0.13 122 0.70 0.02 0.01 <5 1.43 12.57
CBDD042A ECB10684 614.2 614.5 0.3 0.30 0.54 333 2.40 0.01 0.02 <5 5.45 10.23
CBDD042A ECB10685 614.5 615.86 1.36 0.07 0.02 79 <0.5 <0.005 0.00 <5 0.34 13.28
CBDD042A ECB10686 615.86 617.36 1.5 0.02 0.03 74 <0.5 0.01 <0.001 <5 0.64 6.12
CBDD042A ECB10687 617.36 618.92 1.56 0.01 0.01 54 <0.5 <0.005 0.00 <5 0.18 6.37
CBDD042A ECB10688 618.92 620.42 1.5 0.01 0.01 56 <0.5 <0.005 <0.001 <5 0.17 6.67
CBDD042A ECB10689 620.42 621.92 1.5 0.01 0.01 63 <0.5 <0.005 <0.001 <5 0.18 7.23
CBDD042A ECB10690 621.92 623.42 1.5 0.01 0.01 56 <0.5 <0.005 <0.001 <5 0.20 6.42

==> picture [144 x 60] intentionally omitted <==

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.
DD core samples have been half cut with an
techniques cut channels, random chips, or
automatic core saw.
specific
specialised
industry

0.25m-1.1m samples are collected from the core trays
standard
measurement
tools

as marked out by the supervising geologist.
appropriate to the minerals under
A handheld XRF tool was used to verify the
investigation, such as down hole
mineralisation with samples reporting >0.3% Ni in
gamma sondes or handheld XRF
disseminated zones and >1% Ni in the matrix
instruments, etc.). These examples
sulphide zones.
should not be taken as limiting the
XRF results have not been reported and are used as
broad meaning of sampling. a logging/sampling verification tool only.
Include reference to measures taken
Core is cut and sampled to ensure the sample is
to ensure sample representivity and
representative and no bias is introduced. Cutting of
the appropriate calibration of any
specific, banded or stringer sulphide zoned core is
measurement tools or systems used.
done orthogonal to the banding to ensure there is no
bias.
Aspects of the determination of
Determination of mineralisation has been based on
mineralisation that are material to the
geological logging, visual sulphide estimates and
Public Report. confirmation using a pXRF machine. Samples were
dispatched to an accredited laboratory for multi-
element analysis.
.
In cases where ‘industry standard’
Diamond core drilling was used to obtain 3m length
work has been done this would be
samples from the core barrel which are then marked
relatively
simple
(e.g.
‘reverse

in one meter intervals, based on core block
circulation drilling was used to obtain
measurements.
1 m samples from which 3 kg was
Samples are selected based on geological logging
pulverised to produce a 30g charge
boundaries or on nominal meter marks.
for fire assay’). In other cases more
Collected samples weigh a nominal 2-3 kg
explanation may be required, such
(depending on sample length).
as where there is coarse gold that
Samples have been dispatched to an accredited
has inherent sampling problems.
commercial laboratory in Perth for analysis.
Unusual
commodities
or

Samples are being analysed using a 4-acid digest,
mineralisation types (e.g. submarine
ME-ICP for 33 elements and ore zone samples are
nodules) may warrant disclosure of
also being tested for Au & PGE elements using ICP
detailed information analysis.
Drilling Drill
type
(e.g.
core,
reverse

Drilling was undertaken using NQ2 sized drill core.
techniques circulation,
open-hole
hammer,

Holes have been collared with mud rotary from
rotary air blast, auger, Bangka, sonic,
surface, HQ rough cored to top of fresh rock then NQ2
etc) and details (e.g. core diameter,
cored to EOH.
triple or standard tube, depth of
diamond tails, face-sampling bit or
other type, whether core is oriented
andifso, bywhatmethod, etc).

==> picture [144 x 60] intentionally omitted <==

Criteria JORC Code explanation Commentary
Drill Method of recording and assessing
Core recovery was recorded by the field crew and
sample core and chip sample recoveries and
verified by the geologist.
recovery results assessed. RQD measurements were digitally recorded to
Measures taken to maximise sample
ensure recovery details were captured.
recovery and ensure representative
Sample recovery in all mineralised zones is high with
nature of the samples. negligible core loss observed.
Whether
a
relationship
exists

Diamond core drilling is the highest standard and no
between sample recovery and grade
relationship has been established between sample
and whether sample bias may have
recovery and reported grade as the core is in very
occurred due to preferential loss/gain
good condition.
of fine/coarsematerial.
Logging Whether core and chip samples have
Detailed industry standard of collecting core in core
been geologically and geotechnically
trays, marking meter intervals & drawing core
logged to a level of detail to support
orientation lines was undertaken.
appropriate
Mineral
Resource

Core trays were photographed wet and dry prior to
estimation,
mining
studies
and

sampling.
metallurgical studies. Drill hole logs are recorded in Excel spread sheets
Whether logging is qualitative or
and validated in Micromine Software as the drilling
quantitative in nature. Core (or
progresses.
costean, channel, etc) photography. The entire length of all holes is logged.
The total length and percentage of
therelevantintersectionslogged.
Sub- If core, whether cut or sawn and
Core is half cut using an automatic core saw to
sampling whether quarter, half or all core
achieve a half-core sample for laboratory submission.
techniques
taken.
The sample preparation technique is considered
and sample
If non-core, whether riffled, tube

industry best standard practice.
preparation sampled,
rotary
split,
etc
and

No field duplicates have been collected in this
whether sampled wet or dry. program. Field duplicates will be collected once initial
For all sample types, the nature,
results
are
returned
and
resampling
of
the
quality and appropriateness of the
mineralised zones is warranted.
sample preparation technique. Sample sizes are appropriate to the grain size of the
Quality control procedures adopted
mineralisation.
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.
Quality of For
geophysical
tools,

No handheld XRF results are reported however
the
assay data spectrometers,
handheld
XRF

tool was used to verify the mineralisation with
and instruments, etc, the parameters
reporting >0.3% Ni in disseminated zones and >1%
laboratory used in determining the analysis
Ni in the matrix sulphide zones.
tests including
instrument
make
and

DHTEM parameters are as follows;
model, reading times, calibrations
Tx Loop size: 500 x 800 m
factors applied and their derivation,
Transmitter: GAP HPTX-70
etc. Receiver: EMIT SMARTem24
Nature of quality control procedures
Sensor: EMIT DigiAtlantis
adopted (e.g. standards, blanks,
Station spacing: 2m to 10m
duplicates,
external
laboratory

Tx Freq: 0.5 Hz
checks) and whether acceptable
Duty cycle: 50%
levels of accuracy (i.e. lack of bias)
Current: ~130 Amp
and precision have been established.
Stacks: 32-64
Readings: 2-3 repeatable readings per station
The
verification
of
significant

Results verified internally by Company personnel

==> picture [144 x 60] intentionally omitted <==

Criteria JORC Code explanation
Commentary
Verification
of
sampling
and
assaying
intersections by either independent
oralternative company personnel.
The use of twinned holes.
Hole CBDD0028 is twinning hole CBP042. No other
twinningiswarranted at this stage.
Documentation of primary data, data
entry procedures, data verification,
data
storage
(physical
and
electronic) protocols.
The data was collected and logged using Excel
spreadsheets
and
validated
using
Micromine
Software. The data will be loaded into an externally
hosted andmanaged database.
Discuss any adjustment to assay
data.
No adjustments have been made to the assay data
otherthan length xSGweighted averaging.
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.
The holes were pegged using a hand-held GPS+3m
The rig was setup over the nominated hole position
and final GPS pickup occurred at the completion of
the hole.
Holes are progressively surveyed by DGPS on a
batchbasis.
Specificationofthe grid systemused.
MGA94_51
Quality and adequacy of topographic
control.
Topography is relatively flat and control is more than
adequate given the early stage of the project. A 3D
drone ortho-photographic survey had been used to
create aDTMofthe project area.
Data
spacing
and
distribution
Data
spacing
for
reporting
of
Exploration Results.
Refer to Cross Sections and Plans included
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.
Not applicable, no Mineral Resource is being stated.
Whether sample compositing has
beenapplied
No compositing has been applied. Intercepts are
quoted aslength weightedintervals.
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
reportedif material.
The drill hole orientation does not introduce a sample
bias.
Sample
security
The measures taken to ensure
sample security.
Samples are in the possession of Estrella’s personnel
from field collectiontolaboratory submission.
Audits or
reviews
The results of any audits or reviews
ofsampling techniques and data.
No audits or reviews have been conducted for this
release giventhe early stage ofthe project.

==> picture [144 x 60] intentionally omitted <==

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,
Carr Boyd Nickel Pty Ltd (a wholly owned subsidiary of
tenement and
location and ownership including
ESR) holds a 100% interest in the nickel and base metal
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 the area.
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 operateinthe area.
Exploration Acknowledgment and appraisal of The Carr Boyd Rocks deposit was discovered by Great
done by other
exploration by other parties.
Boulder Mines, in a joint venture with North Kalgurli Ltd
parties in 1968. The deposit was mined between 1972 and
1975, during which time they explored for additional
breccia pipe occurrences near the mine.
WMC acquired Great Boulder Mines Ltd in 1975, briefly
reopening the mine in 1977 before closing it permanently
shortly thereafter due to a collapse in the nickel price.
The mine had produced 210,000t at 1.44% Ni and 0.46%
Cu before its closure.
From 1968 Pacminex Pty Ltd held most of the ground
over the CBLC outside of the immediate mine area.
Between 1968 and 1971 they conducted extensive
exploration programs searching for large basal contact
and/or stratabound Ni-Cu deposits. It was during this
time that most of the disseminated and cloud sulphide
occurrences such as those at Tregurtha, West Tregurtha
and Gossan Hill were discovered.
Defiance Mining acquired the regional tenements from
Pacminex in 1987 and focused on exploration for PGE
deposits between 1987 and 1990. In 1990 Defiance
purchased the Carr Boyd Rocks mine from WMC and
switched focus to the mine area between 1990 and 2001,
leaving many PGE targets untested.
From 1990 Defiance dewatered the mine to conduct
testwork and feasibility studies on the remnant
mineralisation. Metallurgical testwork, Mineral Resource
estimations, and scoping studies were completed.
Around 1996 the focus shifted again to regional
exploration for large tonnage basal contact deposits.
In 2001 Titan Resources Ltd (Titan) acquired the project
and recommenced economic evaluations of the remnant
material at Carr Boyd Rocks before embarking on
another regional exploration program focusing on the
basal contact. An aeromagnetic survey, airborne EM
reprocessing, and several programs of RAB and RC
drilling were completed.
From 2005 Yilgarn Mining entered a JV with Titan and
continued with some regional exploration, but focused
most attention in and around the Carr Boyd Rocks mine.
In 2007 Titan was acquired by Consolidated Minerals Ltd
(Consmin). Consmin conducted IP surveys and detailed
gravity surveys, but did not drill any targets before selling
the project to Salt Lake Mining (SLM) in 2013. SLM
completed
limited
drilling
to
meet
expenditure

==> picture [144 x 60] intentionally omitted <==

Criteria JORC Code explanation Code explanation Code explanation Commentary
commitments, before selling the project to Apollo
Phoenix Resources in 2016.
Apollo sold the project to ESR in 2018.
Geology Deposit type, geological setting and
The Carr Boyd project lies within the Achaean Yilgarn
style of mineralisation. Craton in a 700km belt of elongate deformed and folded
mafic, ultramafic rocks and volcanic sediments intruded
by granitoids which is referred to as the Norseman-
Wiluna Belt. The belt has been divided into several
geological distinct terranes, with the project area lying at
the northern end of the Gindalbie terrane (Swager, 1996).
The geology of the Carr Boyd area is dominated by the
Carr Boyd mafic-ultramafic intrusive complex (CBIC).
Several distinctive styles of Ni and Ni-Cu mineralisation
have been identified within the CBIC. At the Carr Boyd
Rocks Nickel Mine Ni-Cu mineralisation is hosted within
several 20 - 60m diameter brecciated pipe-like bodies
that appear to be discordant to the magmatic
stratigraphy. Mineralisation is hosted by a matrix of
sulphides
(pyrrhotite,
pentlandite,
pyrite
and
chalcopyrite) within brecciated Bronzite and altered
country rock clasts.
Stratiform Ni-Cu-PGE mineralisation has been identified
at several different locations within the layered magmatic
complex.
Estrella is in the process of re-mapping and reclassifying
the Carr Boyd Igneous Complex. Previous “Layered
Intrusive” models are misleading as the complex is made
up of many overprinted and juxtaposed, smaller layered
and non-layered intrusives that have progressed from
Ultramafic to Mafic over time. The complex is better
described as a magma feeder zone, where the earliest
melts passing through the Morelands Formation have
assimilated graphitic sulphidic shales, reached sulphur
saturation and deposited nickel sulphides along basal
contacts.
These basal contacts are not restricted to the base of the
complex, but can form within the complex, wherever
access was gained by these earlier flows.
The complex has then been intruded and inflated over
time by progressively more mafic, barren magmas to
produce what we see today.
Drill hole A summary
of
all information
All relevant drillhole information can be found in the
Information material to the understanding of the
Tables and sections within the announcement.
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.

==> picture [144 x 60] intentionally omitted <==

Criteria JORC Code explanation
Commentary
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.
No information is excluded.
Data
aggregation
methods
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 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
indetail.
Intersections are reported on a nominal 1% Ni+Cu cut-off
with length x SG weighted intervals.
All intercepts are reported using length x SG weighted
intervals.
The assumptions used for any
reporting of metal equivalent values
should be clearly stated.
No metal equivalents have been stated
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
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’).
True widths have not been estimated. The T5 zone is
variably sheared and faulted. Primary mineralisation has
been deposited in a turbid environment. Mineralisation
contact angles and continuity cannot be determined and
true width estimations would be considered misleading.
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.
Maps and sections with drill hole locations are included in
the announcement.
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 new drillhole information within this announcement is
reported
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
Everything meaningful and material is disclosed in the
body of the report.
Geological observations are included in the report.
No bulk samples, metallurgical, bulk density, groundwater,
geotechnical and/or rock characteristics test were carried
out.

==> picture [144 x 60] intentionally omitted <==

Criteria JORC Code explanation Commentary Commentary
samples – size and method of
There are no known potential deleterious or contaminating
treatment; metallurgical test results; substances.
bulk
density,
groundwater,
geotechnical
and
rock
characteristics; potential deleterious
orcontaminating substances.
Further work The nature and scale of planned
Diamond drilling and DHTEM geophysical testing is
further work (e.g. tests for lateral continuing.
extensions or depth extensions or
A Seismic survey is being planned for mid-2021.
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.