Exceptional Assay Results of up to 5.12% Li2O at Mavis Lake
Released
Released
Announcement PDF
ASX Announcement
2 July 2024
Exceptional Lithium Assay Results of up to 5.12% Li2O
at Mavis Lake
Highlights
•
The Summer Field Program has delivered multiple new discoveries at Mavis Lake
reinforcing the Company’s recently announced Exploration Target of 18 - 29Mt at 0.81.2% Li2O1.
•
Detailed surface mapping has identified significant extensions to previously discovered
spodumene-bearing outcrops.
•
Assay results confirm exceptionally high grades at surface with lithium assays of up to
5.12% Li2O along the extensions of pegmatites 7 and 24.
•
Pegmatite 19 with confirmed high-grade spodumene up to 2.76% Li2O.
•
Pegmatite 20 extension reveals substantial and consistent mineralisation up to 1.17% Li2O.
•
The results confirm high-confidence drill targets to the south and east of the Mavis Lake
Main Zone Resource.
•
Northern Prospects confirmed as a highly fractionated system with significant potential.
•
Planning and permits in place to undertake mechanical stripping and channel sampling
of the Tot Pegmatite, within the Northern Prospects.
•
A detailed targeted drilling campaign is being finalised from the new data collected.
Lithium exploration and project development company Critical Resources Limited ASX:CRR
(“Critical Resources” or “the Company”) is pleased to announce that it has received
exceptionally high-grade lithium assay results from the recent field program at the Company’s
100%-owned Mavis Lake Lithium Project (“the Project”) in Ontario, Canada.
The discovery of surface extensions and new outcrops was announced in late May (refer to ASX
announcement, 29 May 2024). The subsequent receipt of assay results from these areas, with
lithium oxide concentrations reaching up to 5.12% Li2O, underscores the exceptional potential
of the Mavis Lake Project for continued Resource growth and, ultimately, the ability to deliver
on the Company’s recently announced JORC compliant Exploration Target of 18 - 29Mt at 0.81.2% Li2O1.
1. Refer Announcement 22 May 2024. The potential quantity and grade of the Exploration Target is conceptual
in nature. There has been insufficient exploration to estimate a Mineral Resource and it is uncertain if further
exploration will result in the estimation of a Mineral Resource.
Critical Resources Limited
ABN 12 145 184 667
ASX:CRR
Level 45, 108 St Georges Terrace, Perth WA 6000
P. +61 (8) 9465 1024 W. criticalresources.com.au E. info@criticalresources.com.au
High-Grade Extensions at Main Zone East
Field crews spent three weeks prospecting across the Mavis Lake Project Area, resulting in the
discovery of 31 new LCT-type pegmatites. A total of 83 grab samples were collected to assess
lithium mineralisation from spodumene, as well as fractionation and concentrations of Lithium,
Rubidium, Caesium and Tantalum. Key results are shown in Table 1 and Figure 1, with full
exploration results provided in Appendix 1.
Highlights include:
•
High-grade lithium results ranging from 2.07% to 5.12% Li2O in grab samples across the
~100-metre extensions of spodumene-bearing Pegmatites 7 and 24.
•
Up to 1.17% Li2O at the ~250-metre extension of spodumene-bearing Pegmatite 20.
•
Up to 2.76% Li2O in grab samples from Pegmatite 19.
Table 1: Significant Assay Results from the Summer Prospecting Program
Sample ID
Easting
Northing
Li (ppm)
Li2O (%)
Cs (ppm)
Rb (ppm)
Ta (ppm)
Pegmatite
Type
846868
524679
5517902
23800
5.12
254
738
52.4
Pegmatite 7ext
Outcrop
846831
524661
5517907
19800
4.26
81.9
486
14.4
Pegmatite 7ext
Outcrop
846751
526343
5518601
12800
2.76
658
5000
200
Pegmatite 19
Outcrop
846832
524690
5517914
12800
2.76
61.4
830
186
Pegmatite 7ext
Outcrop
846782
524972
5517685
10200
2.20
101
1930
60.2
Pegmatite 20
Outcrop
846803
526233
5518362
10000
2.15
370
3070
168
Pegmatite 19
Float
846787
524670
5517898
9610
2.07
204
538
50.1
Pegmatite 7ext
Outcrop
846788
524873
5517479
8800
1.89
175
2240
89.2
Pegmatite 20
Outcrop
846834
524868
5517459
7370
1.59
189
2780
96.9
Pegmatite 20
Outcrop
846829
525037
5517830
5420
1.17
15.1
53.4
2.4
Pegmatite 20ext
Outcrop
846817
525041
5517825
5290
1.14
24.8
105
5.2
Pegmatite 20ext
Outcrop
Page 2 of 18
Figure 1 – Plan map showing locations of grab samples and discovery reference areas.
Pegmatite 7 and 24 Extension.
Field teams completed prospecting and clearing around Pegmatites 7 and 24 and were able
to successfully expose both pegmatites towards the east and west by over a strike length of up
to ~100m. Assay results have confirmed high-grade mineralisation, up to 5.12% Li2O from grab
samples.
Pegmatite 7, trending roughly east-west, is up to 4 metres thick with a known strike length of 100
metres and the mineralisation appears to be open laterally in both directions. Notably,
Pegmatite 7 exhibits surface features of megacrystic quartz and spodumene, indicating
significant exploration potential (refer to Figure 2 and Figure 3).
Page 3 of 18
Figure 2 – Large Coare Spodumene samples from Pegmatite 7 (assays confirm grades up to
5.12% Li2O).
The surface contacts of these pegmatites revealed unexpected structural deviations, contrary
to previous understanding. Pegmatite 7 exhibited a near-vertical dip, while Pegmatite 24 dips
shallowly towards the south, contrasting with the typical shallow northward dip of the Main Zone.
This structural divergence is now better understood and the newly defined structural trend of
these pegmatites has revealed new drill targets with the potential to host significant high-grade
mineralisation close to surface.
Page 4 of 18
Figure 3 – Coarse Spodumene at Pegmatite 7 (assays confirm grades up to 5.12% Li2O).
Pegmatite 19, 20, and Pegmatite 25
Pegmatite 19 was previously mapped in 2009 and 2018 and was identified then to have
spodumene-mineralisation. Field crews were able to replicate similar grades of up to 2.76% Li2O.
This pegmatite extends over a known strike length of ~250 metres and is up to 3m wide.
Pegmatite 19 is an immediate drill target.
The mineralisation of Pegmatite 20 was extended by an additional 250 meters to the north,
resulting in a total strike length of approximately 535 meters. Assay results revealed grades of up
to 1.17% Li₂O. This extension provides several new high-priority drill targets for further exploration
and resource definition.
Pegmatite 25 hosted altered out relic spodumene minerals however the alteration remobilized
the majority of the lithium values. Even with minimum lithium values, this pegmatite remains a
priority for drill testing to determine if the alteration is pervasive throughout the pegmatite or if
spodumene minerals occur within this area.
Page 5 of 18
Highly Fractioned Pegmatites at Northern Prospects
During the field program, a total of 113 muscovite samples were collected from known
pegmatites across the Northern Prospects – Gullwing, Coates, Drope, East Drope and Little Wing
– with reference samples also taken from the Mavis Lake Main Zone. The samples were collected
for internal analysis by Laser Induced Breakdown Spectroscopy (LIBS).
LIBS analysis is aimed at determining the degree of fractionation of pegmatites, ultimately to
better target potential areas of spodumene mineralisation. A muscovite sample is shown in
Figure 4.
Figure 4 – Muscovite sample tested for fractionation trend using LIBS analysis
The Company utilised LIBS analysis on muscovite samples to determine the fractionation of
pegmatites in the following way:
•
Sample Collection: Muscovite samples were collected from different pegmatite bodies
in the field.
•
Preparation: Samples were cleaned and prepared to ensure accurate LIBS analysis.
•
LIBS Analysis: A high-energy laser pulse is directed at the muscovite samples. This laser
pulse ablates a small amount of the sample, creating a plasma.
Page 6 of 18
•
Emission Spectroscopy: As the plasma cools, it emits light at characteristic wavelengths.
The emitted light is collected and analysed to identify and quantify the elemental
composition of the sample.
•
Data Interpretation: A qualified geologist interprets the spectral data to determine the
concentrations of elements such as lithium, rubidium, caesium and tantalum. Higher
concentrations of these elements indicate higher degrees of fractionation.
•
Fractionation Assessment: By comparing the elemental compositions across different
samples, the Company can assess the degree of fractionation of the pegmatites. More
fractionated pegmatites typically show higher concentrations of incompatible elements.
•
Geological Implications: The results help in understanding the evolution of the pegmatite
bodies and can indicate areas with higher potential for lithium (spodumene) minerals.
The data allows Critical Resources to map the spatial distribution of mineralisation, guiding
drilling efforts to the most promising areas.
The ability to immediately adjust exploration strategies based on LIBS results, combined with the
correlation of LIBS data with other geophysical and geological information, reduces exploration
risks and validates existing models. Ultimately, this comprehensive, iterative and dynamic
approach will optimise drill target selection, increasing the likelihood of a successful spodumene
discovery and ensuring that drilling metres are optimised to deliver increased value for money.
The results revealed multiple locations with a high degree of fractionation within all pegmatites
(refer to Figure 5). Typically, a high-degree fractionation is defined by a K/Rb ratio of less than
20 and lithium concentrations exceeding 500 ppm, however these values are dependent on
the overall pegmatite system. Critical Resources will compare the values of known spodumenebearing pegmatite’s muscovite and determine what anomalous values to use.
Page 7 of 18
Lithium (ppm)
K/Rb ratio versus Li (ppm) of Muscovite
13000
12500
12000
11500
11000
10500
10000
9500
9000
8500
8000
7500
7000
6500
6000
5500
5000
4500
4000
3500
3000
2500
2000
1500
1000
500
0
0
50
100
150
200
K/Rb rATIO
Coates
Drope
East Drope
Gullwing
Pegmatite 1
Pegmatite 4
Pegmatite 6
Pegmatite 20
Little Wing
Figure 5 – LIBS results showing high-fractionation trends across the Project Area.
Future Work
These assays will further inform and refine the priorities for upcoming drill testing. Based on current
assessments, the Tot pegmatite has emerged as the highest priority for immediate follow-up
exploration due to its high-grade and consistent mineralisation.
To further delineate the Tot pegmatite, a mechanical stripping and channel sampling program
is being designed. This program will aim to expose surface extensions of the outcrop and provide
comprehensive channel sample results to support future resource definition drilling.
The Company has secured the necessary permits for drilling, stripping and channel sampling to
facilitate these efforts. The stripping and channel sampling program at Tot is scheduled to
commence in early July 2024.
Page 8 of 18
In addition to the Tot pegmatite, extensional drilling to the east and south of the Main Zone, as
well as drill testing of the Gullwing Pegmatite, remain priorities. These activities are expected to
be part of the Company’s CY2024 drilling program, ensuring a comprehensive approach to
exploring and evaluating the mineral potential of the entire project area.
This announcement has been approved for release by the Board of Directors.
-endsFor further information please contact
E: info@criticalresources.com.au
P: +61 (8) 9465 1024
ABOUT CRITICAL RESOURCES LIMITED Critical Resources is focused on the exploration, development and delivery of the
critical metals required for a decarbonized future, underpinned by a portfolio of lithium projects in Ontario, Canada
which are ideally positioned to participate in the rapidly growing North American battery materials supply chain.
The Company’s principal focus is on its flagship Mavis Lake Lithium Project in Ontario, Canada, where it has completed
over 45,000m of drilling and defined a maiden Inferred Mineral Resource of 8Mt grading 1.07% Li2O. Recent exploration
success has demonstrated substantial potential to expand this resource and make new discoveries in the surrounding
area. Critical is progressing a dual-track strategy at Mavis Lake of targeting resource growth in parallel with multiple
permitting and project development workstreams.
COMPETENT PERSONS STATEMENT The information in this ASX Announcement that relates to Exploration Results is based
on information compiled by Mr. Troy Gallik (P. Geo), a Competent Person who is a Member of the Association of
Professional Geoscientists of Ontario. Troy Gallik is a full-time employee of Critical Resources. Mr. Gallik has sufficient
experience that is relevant to the style of mineralisation and type of deposit under consideration and to the activity
being undertaken to qualify as a Competent Person as defined in the 2012 Edition of the “Australasian Code for
Reporting of Exploration Results, Mineral Resources and Ore Reserves”. Mr. Gallik consents to the inclusion in this
Announcement of the matters based on his information in the form and context in which it appears.
COMPLIANCE STATEMENT This announcement contains information on the Mavis Lake Lithium Project extracted from
ASX market announcements dated 20 December 2022, 27 March 2023, 17 July 2023, 2 November 2023, 18 March 2024,
17 April 2024, 22 May 2024 and 29 May 2024 reported in accordance with the 2012 JORC Code and available for
viewing at www.criticalresources.com.au. The Company confirms that it is not aware of any new information or data
that materially affects the information included in any original ASX market announcement.
This information in this ASX Announcement regarding that relates to the Mavis Lake Mineral Resource Estimate is
extracted from ASX market announcement dated 5 May 2023 and reported in accordance with the 2012 JORC Code
and available for viewing at criticalresources.com.au. The Company confirms that it is not aware of any new
information or data that materially affects the information included in any original announcement and that all material
assumptions and technical parameters underpinning the estimates in the original market announcement continue to
apply and have not materially changed.
JORC Classification
Li2O Cut-Off grade (%)
Tonnage (Mt)
Li2O (%)
Inferred
0.3
8.0
1.07
Total*
Inferred
8.0
1.07
*Reported at a cut-off grade of 0.30% Li2O for an open pit mining scenario. Estimation for the model is by
inverse distance weighting. Classification is according to JORC Code Mineral Resource categories. Refer to
ASX announcement 5 May 2023, 8.0 Mt at 1.07% Li2O Maiden Mineral Resource at Mavis Lake.
FORWARD LOOKING STATEMENTS This announcement may contain certain forward-looking statements and projections.
Such forward looking statements/projections are estimates for discussion purposes only and should not be relied upon.
Forward looking statements/projections are inherently uncertain and may therefore differ materially from results
ultimately achieved. Critical Resources Limited does not make any representations and provides no warranties
concerning the accuracy of the projections and disclaims any obligation to update or revise any forward-looking
statements/projects based on new information, future events or otherwise except to the extent required by applicable
laws. While the information contained in this report has been prepared in good faith, neither Critical Resources Limited
or any of its directors, officers, agents, employees or advisors give any representation or warranty, express or implied, as
to the fairness, accuracy, completeness or correctness of the information, opinions and conclusions contained in this
announcement.
Page 9 of 18
Appendix 1 – Table of all Assay Results from Prospecting Program
Sample ID
Easting
Northing
Li (ppm)
Li2O (%)
Cs (ppm)
Rb (ppm)
Ta (ppm)
Date
Type
846868
524679
5517902
23800
5.12
254
738
52.4
2024-05-09
Outcrop
846831
524661
5517907
19800
4.26
81.9
486
14.4
2024-05-09
Outcrop
846751
526343
5518601
12800
2.76
658
5000
200
2024-05-01
Outcrop
846832
524690
5517914
12800
2.76
61.4
830
186
2024-05-09
Outcrop
846782
524972
5517685
10200
2.20
101
1930
60.2
2024-05-07
Outcrop
846803
526233
5518362
10000
2.15
370
3070
168
2024-05-01
Float
846787
524670
5517898
9610
2.07
204
538
50.1
2024-05-09
Outcrop
846788
524873
5517479
8800
1.89
175
2240
89.2
2024-05-19
Outcrop
846834
524868
5517459
7370
1.59
189
2780
96.9
2024-05-19
Outcrop
846829
525037
5517830
5420
1.17
15.1
53.4
2.4
2024-05-09
Outcrop
846817
525041
5517825
5290
1.14
24.8
105
5.2
2024-05-06
Outcrop
846785
525039
5517842
3840
0.83
49.9
740
56.1
2024-05-08
Outcrop
846828
525035
5517835
2970
0.64
41.9
140
4.4
2024-05-09
Outcrop
846825
525041
5517837
2710
0.58
41
141
1.3
2024-05-08
Channel
846827
525036
5517835
2690
0.58
189
2200
50
2024-05-09
Channel
846802
526344
5518608
2580
0.56
986
5000
157
2024-05-01
Outcrop
846777
525044
5517882
2270
0.49
79.8
2120
37
2024-05-07
Outcrop
846824
525040
5517842
1680
0.36
76.5
1530
66.6
2024-05-08
Channel
846823
525043
5517843
1440
0.31
80.5
2130
50.1
2024-05-08
Channel
846816
525040
5517842
1040
0.22
88.3
1380
89.5
2024-05-06
Outcrop
846861
526454
5519220
552
0.12
857
673
2.3
2024-05-04
Outcrop
846781
524959
5517669
357
0.08
115
409
5.1
2024-05-07
Outcrop
846763
526409
5519215
289
0.06
171
533
128
2024-05-03
Outcrop
846811
526449
5519106
248
0.05
140
857
226
2024-05-04
Outcrop
846805
526232
5517965
218
0.05
1.4
3.1
29.1
2024-05-02
Outcrop
846773
525026
5517855
215
0.05
84.8
2210
64.1
2024-05-06
Outcrop
846863
526446
5519219
181
0.04
23.7
381
235
2024-05-04
Outcrop
846774
525026
5517855
97
0.02
68.6
1010
93.5
2024-05-06
Outcrop
846851
526198
5517990
95
0.02
198
5000
30.9
2024-05-02
Outcrop
846813
528095
5518261
76
0.02
15.3
251
6.7
2024-05-05
Float
846758
526955
5518685
74
0.02
11
212
4.7
2024-05-03
Float
846779
524959
5517669
72
0.02
71.4
790
282
2024-05-07
Outcrop
846819
525036
5517809
68
0.01
136
2480
58.7
2024-05-07
Outcrop
846814
525976
5517951
65
0.01
278
5000
340
2024-05-05
Outcrop
846857
526409
5519212
61
0.01
176
29.3
27.4
2024-05-03
Outcrop
846852
526204
5517991
59
0.01
121
2610
51.1
2024-05-02
Outcrop
846855
526408
5519214
57
0.01
188
3690
84
2024-05-03
Float
846769
526083
5517976
56
0.01
70.2
7.5
81.5
2024-05-05
Float
846761
526403
5519213
53
0.01
174
3390
83.6
2024-05-03
Float
846762
526406
5519212
53
0.01
180
2350
215
2024-05-03
Outcrop
Page 10 of 18
Sample ID
Easting
Northing
Li (ppm)
Li2O (%)
Cs (ppm)
Rb (ppm)
Ta (ppm)
Date
Type
846768
526167
5517917
52
0.01
7.3
142
1.6
2024-05-05
Float
846866
526036
5517675
51
0.01
45.5
74.7
3.5
2024-05-05
Float
846866
525755
5518512
51
0.01
45.5
74.7
3.5
2024-05-05
Outcrop
846818
525048
5517910
48
0.01
54.9
1280
64.2
2024-05-07
Outcrop
846822
525028
5517797
47
0.01
69.2
1850
42.9
2024-05-07
Outcrop
846812
526367
5519337
45
0.01
23
300
162
2024-05-04
Outcrop
846854
526950
5518319
45
0.01
25.4
499
6.4
2024-05-03
Float
846772
525740
5518506
42
0.01
12
62.4
1.7
2024-05-05
Outcrop
846821
525028
5517804
41
0.01
59.5
1040
65.7
2024-05-07
Outcrop
846826
525036
5517833
39
0.01
113
2640
91.5
2024-05-09
Channel
846776
524953
5517851
38
0.01
34.3
552
3.9
2024-05-06
Float
846801
526842
5518382
38
0.01
9.8
179
3.2
2024-05-01
Float
846804
526230
5517971
31
0.01
11.3
37
236
2024-05-02
Outcrop
846862
526450
5519220
31
0.01
291
3380
343
2024-05-04
Outcrop
846786
525039
5517830
27
0.01
50.7
428
63.5
2024-05-09
Channel
846789
524870
5517581
27
0.01
47.8
1260
71.8
2024-05-19
Outcrop
846775
524977
5517830
25
0.01
4.3
13.6
348
2024-05-06
Outcrop
846867
524958
5517811
22
0.00
9.3
114
5.1
2024-05-06
Float
846756
526461
5518073
21
0.00
59.5
972
169
2024-05-02
Outcrop
846766
526326
5519362
20
0.00
3.8
7.8
54.1
2024-05-04
Outcrop
846806
526922
5518845
19
0.00
21.1
350
1.9
2024-05-03
Float
846807
526901
5518244
18
0.00
8.8
176
2.4
2024-05-03
Float
846752
526202
5517971
17
0.00
4
5.4
539
2024-05-02
Outcrop
846767
527983
5518199
17
0.00
37.1
555
3.4
2024-05-05
Float
846778
525044
5517881
17
0.00
45.5
1730
52.9
2024-05-07
Float
846755
526406
5518054
16
0.00
33.9
280
361
2024-05-02
Outcrop
846815
525772
5518835
16
0.00
9.1
31.8
4.7
2024-05-05
Outcrop
846753
526207
5517980
15
0.00
8
7.1
417
2024-05-02
Outcrop
846754
526173
5517965
15
0.00
3.9
12.8
167
2024-05-02
Outcrop
846757
526770
5518786
15
0.00
21.8
649
21.1
2024-05-03
Float
846759
526957
5518354
15
0.00
11.4
266
6.1
2024-05-03
Float
846764
526472
5519056
15
0.00
11.6
239
5.8
2024-05-04
Float
846765
526446
5519102
15
0.00
6.4
30.3
237
2024-05-04
Outcrop
846771
525668
5518411
15
0.00
30
681
2.5
2024-05-05
Float
846783
524908
5517689
15
0.00
2.8
32.5
27.7
2024-05-07
Outcrop
846784
524941
5517687
15
0.00
14.7
303
52.5
2024-05-07
Outcrop
846808
526408
5519234
15
0.00
11.3
6.7
146
2024-05-03
Outcrop
846809
526439
5519117
15
0.00
11.6
196
66.6
2024-05-03
Outcrop
846853
526834
5518744
15
0.00
2
61.9
2.2
2024-05-03
Float
846856
526411
5519216
15
0.00
338
5000
35.2
2024-05-03
Float
846858
526412
5519132
15
0.00
80.6
2790
78.5
2024-05-03
Outcrop
Page 11 of 18
Sample ID
Easting
Northing
Li (ppm)
Li2O (%)
Cs (ppm)
Rb (ppm)
Ta (ppm)
Date
Type
846859
526429
5519114
15
0.00
382
5000
27.3
2024-05-04
Outcrop
846864
527958
5518198
15
0.00
16.3
697
4.7
2024-05-05
Float
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 Bedrock Grab Samples
(e.g., cut channels, random
• Sampling will be conducted on the surface of exposed
chips, or specific specialised
outcrops or float rocks via pick, hammer, or another
industry standard measurement
handheld tool.
tools appropriate to the
minerals under investigation,
• Samples only represent a direct point on the surface and
such as down hole gamma
may not be representative to the entire rock body.
sondes, or handheld XRF
• All rock samples collected were shipped to Actlabs
instruments, etc). These
Laboratories
in Dryden, ON, for trace and rare earth
examples should not be taken
elements
by
sodium
peroxide fusion ICP-OES/ICP-MS 58
as limiting the broad meaning
elements.
The
Company
submitted standards and blanks
of sampling.
while Actlabs also provided internal lab QAQC.
• All grab samples will have NAD83 15N coordinates.
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.
Page 12 of 18
Criteria
JORC-Code Explanation
Commentary
Drilling
techniques
Not applicable as no drilling was undertaken
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).
Drill sample
recovery
• Not Applicable
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.
Bedrock
• Sample site description and basic nature of the
sample medium was routinely collected and at times
photographed for reference.
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 If core, whether cut or sawn
• Not Applicable
techniques and and whether quarter, half or all
sample
core taken.
preparation
If non-core, whether riffled,
tube sampled, rotary split, etc
Page 13 of 18
Criteria
JORC-Code Explanation
Commentary
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.
Quality of assay The nature, quality and
data and
appropriateness of the assaying Bedrock Grab Samples
•All rock samples collected will be shipped to Actlabs
laboratory tests and laboratory procedures
Laboratories in Dryden, ON, Canada
used and whether the
technique is considered partial • Samples were analysed for trace and rare earth elements
by sodium peroxide fusion ICP-OES/ICP-MS 58 elements.
or total.
• The Company submitted standards and blanks while
Actlabs also provided internal lab QAQC
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.
Page 14 of 18
Criteria
JORC-Code Explanation
Commentary
The use of twinned holes.
Bedrock Grab Samples
• No independent verification completed at this stage.
Documentation of primary
data, data entry procedures, • No adjustments to the assay data.
data verification, data storage • No assay cut off grades are applied.
(physical and electronic)
• The data regarding sampling location and sample
protocols.
information is stored in tabular format and is appended to
Discuss any adjustment to assay this report.
data.
Location of
data points
Accuracy and quality of
Bedrock Grab Samples
surveys used to locate drill holes • Samples will be recorded with Garmin GPS that has an
(collar and down-hole surveys), accuracy in the order of ±3 metres for location.
trenches, mine workings and
• WGS 1984 UTM Zone 15N.
other locations used in Mineral
• No specific topography survey has been completed over
Resource estimation.
the project area.
Specification of the grid system
used.
Quality and adequacy of
topographic control.
Data spacing Data spacing for reporting of
and distribution Exploration Results.
Bedrock Grab Samples
• The samples are considered random taken directly from
outcropping spodumene-bearing pegmatite.
Whether the data spacing, and • The data spacing, and distribution are not sufficient to
distribution is sufficient to
establish the degree of geological and grade continuity.
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.
Orientation of Whether the orientation of
Bedrock Samples
data in relation sampling achieves unbiased
• ESE-WNW oriented grids are used to cover the
to geological sampling of possible structures
majority of known geological and structural trends.
structure
and the extent to which this is
known, considering the deposit • Samples were spaced to provide a first pass test of as
many geological/geophysical targets as possible in the
type.
time available.
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.
Page 15 of 18
Criteria
JORC-Code Explanation
Sample security The measures taken to ensure
sample security.
Audits or
reviews
Commentary
Bedrock Grab Samples
•All rock samples collected were shipped to Actlabs
Laboratories in Dryden, ON by transport trailer. All sample
bags had security tags and were confirmed upon arrive to
the lab.
The results of any audits or
• Assay results were checked and validated by
reviews of sampling techniques competent persons in Thunder Bay, Ontario.
and data.
Section 2: Reporting of Exploration Results
(Criteria listed in the preceding section also apply to this section)
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