15% Increase in Gold Grade Based on Initial Sample Reanalysis at the Cheechoo Property, Quebec
TSX-V : SOI August 26, 2021
15% Increase in Gold Grade Based on Initial Sample Reanalysis at the
Cheechoo Property, Quebec
Montréal (Québec) – The management of Sirios Resources Inc. (TSX -V: SOI) is pleased to
announce results from the first batch of reanalysis completed on samples from previous drilling
on the Cheechoo gold property in Eeyou Istchee James Bay, Quebec. A total of 359 samples
were reanalyzed using 1 kg of material per sample at Agat's laboratory using the "LeachWELL"
leaching technique. The recent assay results show an increase in the gold content of
approximately 15% compared to previous assays performed on 50g of material.
The comparative statistical data obtained include:
• 21% Increase in average gold content when comparing each pair of assay results,
• 15% Increase in median gold grade from 0.33 g/t to 0.38 g/t,
• 17% Increase in favour of 1 kg analyses according to the linear trend line of the Q -Q
(quantile-quantile) graph.
Au 50g (g/t) Au 1kg (g/t)
Total Average 0.51 0.53
Average without outliers (4) 0.41 0.47
Median 0.33 0.38
n (number of samples) 359 359
The average gold grade reported in the table above (0.51 g/t / 0.53 g/t) is lower than the current
reported grade of the Cheechoo mineral resource estimate (0.65 g/t). This decrease is due to the
selection of samples for reanalysis that excludes most of the pre -existing results above 2 g/t Au,
as these samples have already been analysed using 1 kg of material according to Sirios’ sampling
protocol in place for Cheechoo. The lower gold grade threshold for selecting samples for
reanalysis using 1 kg of material was set at 0.2 g/t in order to be as close as possible to the
mineral resource estimate cut-off grade defined for the project.
Previous work ha d identified that samples returning greater than 2 g/t gold show an in crease in
the gold content when assaying with 1 kg of material. Samples with a gold grade ranging
between 0.2 g/t and 2 g/t make up approximately 38% of the total number of samples use d in the
current resource estimation and therefore represent a major part of the reanalysis program.
This program is based on recommendations from Lynda Bloom, P.Geo. with Analytical
Solutions Ltd., a leading authority in the field of exploration geochemistry and assay methods .
The recommendations included using a larger sample size for assays, followed by a statistical
study conducted by Sirios' geologists . Results of this study indicate that the measured gold
content based on 1 kg samples is generally higher and more representative of the true gold grade
than the sample analyzed with 50 g of material, which is more commonly analysed in the
laboratory. This relationship between the measured gold content and the size of the analyzed
sample is consistent with the mineralogical observations and data from the various metallurgical
tests previously performed by Sirios and is typical of other deposits with a pronounced “nugget
effect”.
Dominique Doucet, founder and CEO of Sirios, stated: "Following these encouraging results, the
additional planned programs of reanalysis will be carried out in the coming months. In addition,
a revision to Sirios’ assaying protocol will be applied to the current drilling campaign to increase
the amount of assaying done using 1 kg of material. We believe that following the complet ion of
this important reanalysis program, the likelihood of an upward revision to the average gold grade
of the Cheechoo deposit is excellent. Drilling being carried out this summer and the reanalysis
program will increase the quality of the Cheechoo deposit and possibly its average gold grade."
y = 1.1718x
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0,2 0,3 0,4 0,5 0,6 0,7 0,8 0,9 1 1,1 1,2 1,3 1,4 1,5 1,6 1,7 1,8 1,9 2
Analyses Au 1kg (g/t)
Analyses Au 50g (g/t)
Q-Q Graph Au 1kg vs 50g n=355
without sample outliers >2 g/t (n=4)
Cheechoo
average deposit grade 0.65 g/t
0.75 g/t
Assay quality control
For the re -assay program, 1 kg of reject material was taken from previous core samples to be
assayed using the “LeachWELL” technique at AGAT Laborator ies. Th is technique uses
accelerated cyanide leaching equipment employing the patented LeachWELLTM reagent on 1
kg of pulverized material and was carried out over a 4 hours leaching period. After the leaching
process, the residue was filtered and dried. The leached solution was analysed by ICP -MS for
gold content and 50g of the residue was assayed by Fire A ssay with an Atomic Absorption
finish. The then combine d analysis give the total gold content for the sample. A strict QA/QC
program is in place by integrating blanks and certified reference standards to the reject sample
sequence. Special certified reference standards (assay pills) have been used for assuring an
adequate quality control on the 1 kg material assays.
About the Cheechoo property
The Cheechoo gold property, wholly- owned by Sirios, is located in Eeyou Istchee James Bay,
Quebec, less than 9 km from Newmont’s Eleonore gold mine. The latest resource estimate for
the Cheechoo project (October 2020) included an inferred resource of 2.0 million ounces of gold
contained in 93.0 million tonnes of rock at an average grade of 0.65 g/t Au, with significant
potential to increase this resource.1
The scientific and technical content of this press release has been reviewed and approved by
Dominique Doucet, P.Eng. president and CEO of Sirios Resources Inc. and Jordi Turcotte,
P.Geo. senior geologist, both qualified persons under National Instrument 43-101.
About Sirios
A pioneer in the discovery of significant gold deposits in Eeyou Istchee James Bay, Quebec,
Canada, Sirios Resources Inc. is focusing primarily on its Cheechoo gold discovery, while
actively exploring the gold potential of its other properties.
Forward Looking Statements:
This press release contains "forward -looking statements" within the meaning of applicable
Canadian securities laws based on expectations, estimates and projections as of the date of this
press release. Forward -looking statements involve risks, uncertaintie s and other factors that
could cause actual events, results, performance, expectations and opportunities to differ
materially from those expressed or implied by such forward- looking statements. Factors that
could cause actual results to differ materially f rom those indicated in such forward- looking
statements include, but are not limited to: capital and operating costs that differ materially from
estimates; the tentative nature of metallurgical test results; delays or failures in obtaining
required governmental, environmental or other approvals; uncertainties related to the availability
and cost of necessary financing in the future changes in financial markets; inflation; fluctuations
in metal prices; delays in project development; other risks relating to th e mineral exploration and
development industry; and risks disclosed in public filings of the Company on SEDAR at www.
sedar.com. Although the Company believes that the assumptions and factors used in preparing
the forward-looking statements contained in this news release are reasonable, readers should not
place undue reliance on this information, which speaks only as of the date of this news release,
and there can be no assurance that such events will occur or occur within the time periods
1 BBA, Mineral Resource Estimate Update for The Cheechoo Project, 31/10/2020
presented. The Co mpany disclaims any intention or obligation to update or revise any forward-
looking statements, whether as a result of new information, future events or otherwise, except as
required by applicable law.
Neither TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in the Rules of the TSX
Venture Exchange) accepts responsibility for the adequacy or accuracy of this release.
Contact :
Dominique Doucet, President, CEO, Eng.
Tel. : (514) 918-2867
website : www.sirios.com