Yorbeau Confirms Excellent Concentrate Grades and Good Recoveries During Metallurgical Test at Its Scott Project.
YORBEAU RESOURCES INC.
110 Place Crémazie, Suite 430, Montréal, QC, H2P 1B9
www.yorbeauresources.com
PRESS RELEASE
FOR IMMEDIATE RELEASE
YORBEAU CONFIRMS EXCELLENT CONCENTRATE GRADES AND GOOD
RECOVERIES DURING METALLURGICAL TEST AT ITS SCOTT PROJECT.
Montréal, August 29, 2017 - Yorbeau Resources Inc. (TSX: YRB) (the “Company” or “Yorbeau”) is
pleased to report results from metallurgical tests at its Scott project in Quebec.
A composite sample weighing 55 kilograms was prepared from drill core selected from several
representative drill holes from all mineralized zones forming the Mineral Resources except the Selco lens.
The composite sample is considered to be representative of the Mineral Resources and contained
approximately the same ratio of massive sulphides and stringer sulphides as shown in the Mineral
Resources (re: press release of March 30, 2017).
A series of metallurgical tests were completed by Chibougamau-based Services Métallurgiques Metchib,
in cooperation with SGS Canada Inc. in Québec city. The work done includes a mineralogical
characterization (QEMSCAN), a Davis Tube magnetic test, an oxidation and activation test , 11 batch
flotation tests, and a “ locked cycle” flotation test. The batch flotation tests were done to determine the
response of the mineralization to various grinds and flotation parameters , and to determine the process
and flowsheet to be used for the locked cycle test. The locked cycle test was designed to replicat e at
bench scale, as much as possible, the physical and chemical conditions that would ultimately be used at
industrial scale in a concentrator.
Based on the QEMSCAN analysis and the preliminary tests, a primary grind of 55 microns was selected
for the te sts. A total of six cycles were completed in the locked cycle test. The concentrates obtained in
cycles B and C are considered representative of the final copper concentrate, while the concentrate
obtained in cycle F is considered the closest representative of the final zinc concentrate (see details
below). The highlights of the tests are presented below.
Copper concentrate
• In the chalcopyrite batch flotation tests various copper concentrate grades were obtained, ranging
from 19% Cu to 33% Cu, and a good copper concentration potential with low zinc content was
shown.
• During the locked cycle test, the highest copper grade achieved in a given cycle was 27.2% Cu.
• The locked cycle test (cycles B -C) showed an overall 82% copper recovery in a 23.3% Cu
concentrate.
• Copper concentrate grade for cycle B:
% Cu % Zn g/t Au g/t Ag Fe%
25.4 6.5 8.5 612 27.5
YORBEAU RESOURCES INC.
110 Place Crémazie, Suite 430, Montréal, QC, H2P 1B9
www.yorbeauresources.com
• Although the full mass balance and recovery estimate still remain to be done for gold, the high
gold and silver grades in the copper concentrate are very encouraging. These results reflect the
strong affinity between precious metals and the copper concentrate, which is critical for recovery
of payable precious metals.
• According to the report submitted by Metchib’s metallurgists, it appears i n light of all the
metallurgical test work done for the Scott deposit , that once the optimization of the process is
done, it will be possible to achieve an 84% copper recovery at 25% Cu in the copper concentrate.
• Trace element content – copper concentrate cycle B:
arsenic <30 berylium <0.07 bismuth <200
cadmium 137 cobalt <30 mercury 1.4
lead 7500 antimony <20 selenium <50
All analyses in ppm (parts per million)
Zinc concentrate
• In the sphalerite batch flotation tests, a recovery of over 80% was achieved at a concentrate grade
of 48% Zn, this before any cleaner stage. A higher recovery was expected during the locked cycle
test, since the Cu cleaner tails stream is to be sent into the zinc circuit.
• The locked cycle test showed an overall 83% zinc recovery in a 51.1% Zn concentrate.
• Zinc concentrate grade for the last cycle F:
% Cu % Zn g/t Au g/t Ag Fe%
0.6 53.3 0.27 63.6 11.9
• According to the report submitted by Metchib’s metallurgists, it appears i n light of all the
metallurgical test work done for the Scott deposit, that once the optimization of the process is
done, it will be possible to achieve an 87% zinc recovery at 55% Zn in the zinc concentrate.
• Trace element content – zinc concentrate cycle F:
arsenic <30 berylium <0.07 bismuth <200
cadmium 1110 cobalt <30 mercury 3.0
lead 771 antimony <20 selenium <50
All analyses in ppm (parts per million)
The concentrates produced in the tests are clean of typical unwanted (so -called “nasty”) elements such as
arsenic, antimony, cadmium and mercury. Other metals such as lead and zinc in the copper concentrate,
or iron in the zinc concentrate, have good potential of being reduced while upgrading the concentrates
during process optimization. Therefore, both the copper and the zinc c oncentrates appear to be of
“commercial quality”, particularly in terms of copper and zinc grades, but also in terms of their very low
contents of arsenic, mercury, and cadmium.
The above metallurgical results were obtained f rom “standard” flotation process with “ off the shelf ”
standard reagents. They represent a very important milestone for the Scott project and will serve as
additional strong technical support for the on- going Preliminary Economic Assessment by Roscoe Postle
Associates.
YORBEAU RESOURCES INC.
110 Place Crémazie, Suite 430, Montréal, QC, H2P 1B9
www.yorbeauresources.com
Gérald Riverin, Company president commented: “We are very pleased with the results obtained in the
metallurgical test. Indeed, while a critical milestone for the Scott project was reached by outlining very
important mineral resources, the met allurgical test is yet another important milestone. Indeed, the results
of the test clearly indicate that zinc and copper recoveries are very good and, most importantly, that
excellent metal concentrates comparable to typical commercial grade concentrates can be obtained from
the resources. The next step will be the completion of the on-going Preliminary Economic Assessment.”
Metallurgical work was performed and supervised by Jonathan Lapointe, P.Eng., of Services
Métallurgiques Metchib , and Dominique Las celle, M.Eng., of SGS. Chemical analyses were done by
SGS. The work was commissioned for Yorbeau by Gérald Riverin, PhD, P. Geo. He is a qualified person
(as defined by NI 43-101) and has reviewed and approved the content of this release.
About Yorbeau Resources Inc.
The Company’s 100% controlled Rouyn Property contains four known gold deposits in the 6- km-long
Augmitto-Astoria corridor situated on the western half of the property. Two of the four deposits, Astoria
and Augmitto, have substantial undergr ound infrastructure and have been the subject of NI 43 -101
technical reports that include resource estimates. The Company has signed an Option Agreement with an
affiliate of Kinross Gold Corporation to pursue exploration on the Rouyn Property (see press re lease
dated October 25, 2016). In 2015, the Company expanded its exploration property portfolio by acquiring
strategic base metal properties in prospective areas of the Abitibi Belt of Quebec and Ontario that also
feature infrastructure favourable for mini ng development. The newly acquired base metal properties
include Scott Lake which hosts important mineral resources (see press release dated March 30, 2017).
More information on the Company may be found on the Company’s website at
www.yorbeauresources.com.
For further information, please contact:
Gérald Riverin, Ph D., P. Geo
President
Yorbeau Resources Inc.
Tel : 819-279-1336
G. Bodnar Jr.
Vice President
Yorbeau Resources Inc.
Tel.: 514-384-2202
Toll free in North America: 1-855-384-2202
Forward-looking statements: Except for statement of historical fact, all statements in this news release,
without limitation, regarding new projects, acquisitions, future plans and objectives are forward -looking
statements which involve risks and uncertainties. There can be no assurance that such statements will
prove to be accurate; actual results and future events could differ materially from those anticipated in
such statements.