Vizsla Reports High Metallurgical Test Recoveries FOR Napoleon: 93% Silver and 90% GOLD
VIZSLA REPORTS HIGH METALLURGICAL
TEST RECOVERIES FOR NAPOLEON: 93%
SILVER AND 90% GOLD
VANCOUVER, BC
,
Feb. 17, 2022
/CNW/ -
Vizsla Silver Corp.
(TSXV: VZLA) (NYSE: VZLA)
(
Frankfurt
: 0G3) ("
Vizsla
" or the "
Company
") is pleased to announce initial metallurgical test results
for the Napoleon Resource Area ("
Napoleon
") at its 100%-owned flagship Panuco silver-gold
project ("
Panuco
" or the "
Project
") located in
Mexico
.
Highlights:
Open circuit rougher bulk flotation testing yielded recoveries of up to 93% for silver (Ag), 90%
gold (Au), 94% lead (Pb), and 94% zinc (Zn);
Open circuit rougher sequential flotation testing yielded lead and zinc concentrates with
combined recoveries up to 88% Ag, 88% Au, 96% pb and 96% Zn;
Direct cyanide leach tests yielded recoveries of up to 87% Ag and 93% Au after 48 hours
retention time; and,
Gravity separation testing highlighted recoveries of 29% Ag and 40% Au.
"The results of preliminary metallurgical testing at Napoleon are a major milestone for
Panuco
as it
significantly de-risks the Project ahead of the maiden resource in the first quarter of 2022,"
commented
Michael Konnert
, Vizsla President & CEO.
"Given the historical production in the
district, we had a good indication that
Panuco
metallurgy would be amenable to standard
processing methods. With high precious metals recoveries demonstrated through a variety of
different processing flowsheets, the Project has considerable flexibility in terms of processing
strategies. As we move forward, the project team will be able to evaluate and select the best
option, or use multiple processing options to optimize project returns."
Metallurgical Test Program Overview
As the first metallurgical testing program conducted by Vizsla at
Panuco
, the objective was to
assess the wide range of viable processing alternatives that could be applied to successfully recover
precious and base metals from mineralized material at Napoleon. The metallurgical test program
consisted of geo-metallurgical characterization, comminution testing, cyanide leach testing, gravity
recovery, grind size sensitivity, bulk and sequential flotation assessments.
A total of ~330 kg of core material was selected from six mineralized drill holes defining ten litho-
based point samples. The rationale for sample selection considered primary lithologies, spatial
coverage and representation, contiguous mineralization, distribution of grade and potential dilution.
The samples were blended to create a 65 kg master composite, which all subsequent tests were
based on.
The test program was designed and supervised by Ausenco Engineering Canada Inc. and completed
by ALS Canada Ltd. out of
Kamloops, BC
.
Process
Option
Stage
Mass
Recovery
(%)
Global Recovery (%)
Product Grade (% or g/t)
Ag
Au
Pb
Zn
Ag
Au
Pb
Zn
Whole Ore
Leach
Direct Cyanidation
Leach
100
87
93
-
-
-
-
-
-
Bulk Sulfide
Flotation*
Rougher Conc.
17.0
93
90
94
94
666
16
6.8
5.8
1 Stage Cleaner Conc
7.1
89
88
87
90
1,524
36
15.1
13.2
2 Stage Cleaner Conc
5.6
87
86
82
87
1888
45
18.1
16.2
Sequential
Flotation*
Lead Rougher Conc
6.0
79
80
93
24
1,804
40
18.3
4.4
Zinc Rougher Conc
6.2
9
8
3
72
194
4
0.5
12.8
Lead Rougher Conc
6.0
79
80
93
24
1,804
40
18.3
4.4
1 Stage Cleaner Conc
2.1
71
76
87
12
4,656
110
49.1
6.3
2 Stage Cleaner Conc
1.7
68
74
83
9
5,550
134
58.4
5.7
Zinc Rougher Conc
6.2
9
8
3
72
194
4
0.5
12.8
1 Stage Cleaner Conc
1.7
8
7
2
71
628
13
1.4
47.2
2 Stage Cleaner Conc
1.4
7
7
1
71
692
15
1.2
56.2
Gravity
Concentration
Knelson Concentrate
3.6
29
40
28
12
1,087
31
8.9
3.5
Tabled Knelson Conc
0.6
12
26
13
2
2,670
122
24.8
2.9
Table 1:
Summary of results from optimized test work. *Open circuit tests
Sequential & Bulk Flotation:
Conventional open circuit sequential lead rougher and zinc rougher
flotation tests were conducted on the master composite to assess the sample's amenability to
recover precious and base metals into separate marketable lead and zinc concentrates. Grind size
sensitivity analysis highlighted a P80 of 63 µm as the potential optimum primary grind. Following the
rougher steps, the individual lead and zinc concentrates were reground (P80 of 19 µm for lead and
36 µm for zinc) and subjected (respectively) to a two-stage open circuit cleaner flotation testwork.
Open circuit bulk rougher and cleaner flotation tests were conducted to investigate the sample's
amenability to recover base and precious metals into a single marketable concentrate. The bulk
rougher concentrate was reground and subjected to open circuit cleaner flotation testwork consisting
of two stages. Based on the sequential flotation testing results, a P80 of 63 µm was selected as the
primary grind, while 31 µm was selected as the regrind target.
Cyanide Leaching:
Bottle roll cyanidation testing was completed on the Napoleon master
composite using a grind size of P80 63 µm, retention time of 48 hours, and a pH of 11-11.5. Results
indicate a strong extraction profile, yielding 93% for gold and 87% for silver after 48 hours. Reagent
consumption was 2.5 kg/tonne of NACN and 0.5 kg/tonne of lime. Liquor assays indicated low levels
of impurities indicating leaching was highly successful in selectively leaching precious metals from the
mineralization with limited dissolution of other elements.
Gravity Testing:
The program tested the Napoleon master composite response to gravity
concentration via a Knelson concentrator followed by a hand panning program. Consistent with the
other tests, a grind size of P80 63 µm was selected. Whole ore gravity testing demonstrated that
40% Au and 29% Ag were recoverable.
Comminution:
The Napoleon composite material is considered to be a moderately hard mill feed,
returning a bond ball work index (BBWi) of 16.8 kWh/tonne, which is consistent with similar ore
material from nearby Mexican projects.
Future Work Programs
Based on these attractive results, the Company plans to complete further metallurgical testwork
following the announcement of its maiden resource estimate in Q1 2022.
Similar metallurgical testwork is currently underway for the
Tajitos
area mineralization. Once
complete, the combined metallurgical test results will guide the processing strategy for potential
development of the western portion of the
Panuco
district.
About the
Panuco
project
The newly consolidated
Panuco
silver-gold project is an emerging high-grade discovery located in
southern
Sinaloa, Mexico
, near the city of Mazatlán. The 6,754-hectare, past producing district
benefits from over 75 kilometres of total vein extent, a 500 ton per day mill, 35 kilometres of
underground mines, tailings facilities, roads, power and permits.
The district contains intermediate to low sulfidation epithermal silver and gold deposits related to
siliceous volcanism and crustal extension in the Oligocene and Miocene. Host rocks are mainly
continental volcanic rocks correlated to the Tarahumara Formation.
About Vizsla Silver
Vizsla Silver is a Canadian mineral exploration and development company headquartered in
Vancouver, BC
, focused on advancing its flagship, 100%-owned
Panuco
silver-gold project located
in
Sinaloa, Mexico
. To date, Vizsla has completed over 120,000 meters of drilling at
Panuco
leading
to the discovery of several new high-grade veins. With an ongoing fully funded +120,000-meter drill
program, the Company is well positioned to deliver a maiden project resource in the first quarter of
2022 while in parallel continuing to explore the significant upside potential remaining in the district.
About Ausenco
Ausenco is a global company redefining what's possible. Their team is based across 26 offices in 14
countries, with projects in over 80 locations worldwide. Combining their deep technical expertise with
a 30-year track record, they provide innovative, value-add consulting and engineering studies and
project delivery, asset operations and maintenance solutions to the mining & metals, oil & gas, and
industrial sectors.
Quality Assurance / Quality Control
Drill core and rock samples were shipped to ALS Limited in
Zacatecas
,
Zacatecas, Mexico
and in
North Vancouver, Canada
for sample preparation and for analysis at the ALS laboratory in North
Vancouver. The ALS Zacatecas and
North Vancouver
facilities are ISO 9001 and ISO/IEC 17025
certified. Silver and base metals were analyzed using a four-acid digestion with an ICP finish and
gold was assayed by 30-gram fire assay with atomic absorption ("AA") spectroscopy finish. Over
limit analyses for silver, lead and zinc were re-assayed using an ore-grade four-acid digestion with
AA finish.
Control samples comprising certified reference samples, duplicates and blank samples were
systematically inserted into the sample stream and analyzed as part of the Company's quality
assurance / quality control protocol.
Qualified Person
The Company's disclosure of metallurgical information in this press release has been collated and
reviewed by
Kevin Murray
, P.Eng, of Ausenco. All scientific and technical information in this press
release has been reviewed and approved by
Martin Dupuis
, P.Geo., Vice President of Technical
Services for Vizsla. Messrs. Murray and Dupuis are Qualified Persons as defined under the terms of
National Instrument 43-101.
Neither TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in
policies of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this
release.
SPECIAL NOTE REGARDING FORWARD LOOKING STATEMENTS
This news release includes certain "Forward–Looking Statements" within the meaning of the United
States Private Securities Litigation Reform Act of 1995 and "forward–looking information" under
applicable Canadian securities laws. When used in this news release, the words "anticipate",
"believe", "estimate", "expect", "target", "plan", "forecast", "may", "would", "could", "schedule" and
similar words or expressions, identify forward–looking statements or information. These forward–
looking statements or information relate to, among other things: the commencement of trading on the
NYSE American, the ceasing of trading on the OTCQB, the exploration, development, and
production at
Panuco
, including drilling programs and mobilization of drill rigs; and completion of a
maiden resource estimate.
Forward–looking statements and forward–looking information relating to any future mineral
production, liquidity, enhanced value and capital markets profile of Vizsla Silver, future growth
potential for Vizsla Silver and its business, and future exploration plans are based on management's
reasonable assumptions, estimates, expectations, analyses and opinions, which are based on
management's experience and perception of trends, current conditions and expected developments,
and other factors that management believes are relevant and reasonable in the circumstances, but
which may prove to be incorrect. Assumptions have been made regarding, among other things, the
price of silver, gold, and other metals; no escalation in the severity of the COVID-19 pandemic;
costs of exploration and development; the estimated costs of development of exploration projects;
Vizsla Silver's ability to operate in a safe and effective manner and its ability to obtain financing on
reasonable terms.
These statements reflect Vizsla Silver's respective current views with respect to future events and
are necessarily based upon a number of other assumptions and estimates that, while considered
reasonable by management, are inherently subject to significant business, economic, competitive,
political and social uncertainties and contingencies. Many factors, both known and unknown, could
cause actual results, performance, or achievements to be materially different from the results,
performance or achievements that are or may be expressed or implied by such forward–looking
statements or forward-looking information and Vizsla Silver has made assumptions and estimates
based on or related to many of these factors. Such factors include, without limitation: the Company's
dependence on one mineral project; precious metals price volatility; risks associated with the
conduct of the Company's mining activities in
Mexico
; regulatory, consent or permitting delays; risks
relating to reliance on the Company's management team and outside contractors; risks regarding
mineral resources and reserves; the Company's inability to obtain insurance to cover all risks, on a
commercially reasonable basis or at all; currency fluctuations; risks regarding the failure to generate
sufficient cash flow from operations; risks relating to project financing and equity issuances; risks
and unknowns inherent in all mining projects, including the inaccuracy of reserves and resources,
metallurgical recoveries and capital and operating costs of such projects; contests over title to
properties, particularly title to undeveloped properties; laws and regulations governing the
environment, health and safety; the ability of the communities in which the Company operates to
manage and cope with the implications of COVID-19; the economic and financial implications of
COVID-19 to the Company; operating or technical difficulties in connection with mining or
development activities; employee relations, labour unrest or unavailability; the Company's
interactions with surrounding communities and artisanal miners; the Company's ability to successfully
integrate acquired assets; the speculative nature of exploration and development, including the risks
of diminishing quantities or grades of reserves; stock market volatility; conflicts of interest among
certain directors and officers; lack of liquidity for shareholders of the Company; litigation risk; and
the factors identified under the caption "Risk Factors" in Vizsla Silver's management discussion and
analysis. Readers are cautioned against attributing undue certainty to forward–looking statements or
forward-looking information. Although Vizsla has attempted to identify important factors that could
cause actual results to differ materially, there may be other factors that cause results not to be
anticipated, estimated, or intended. Vizsla does not intend, and does not assume any obligation, to
update these forward–looking statements or forward-looking information to reflect changes in
assumptions or changes in circumstances or any other events affecting such statements or
information, other than as required by applicable law.
SOURCE
Vizsla Silver Corp.
View original content to download multimedia:
http://www.newswire.ca/en/releases/archive/February2022/17/c1928.html
%SEDAR: 00045314E
For further information:
and to sign-up to the mailing list, please contact: Michael Konnert,
President and Chief Executive Officer, Tel: (604) 364-2215, Email: [email protected], Website:
www.vizslasilvercorp.ca
CO: Vizsla Silver Corp.
CNW 06:30e 17-FEB-22