International Iconic Gold Exploration Corporation (“
Iconic
Gold” or
the “
Company”) (TSXV:
ICON)
(OTC:
MFMLF) announces the receipt from SGS in
Burnaby, Canada (“
SGS”) of a final report entitled
“An Investigation into Preliminary Metallurgical TestWork – San
Roque Deposit” dated July 13, 2022 (the
“
Metallurgical Report”), which is
a professional, complete and complex third-party document detailing
early-stage bench-scale metallurgical testwork (the
“
Metallurgical Testwork”) results
on drill core samples that adequately represent the geologic
diversity of mineralization from the Company’s wholly owned,
advanced exploration stage San Roque property (the
“
Property”) located in Northeast Patagonia near
the Atlantic coast in the Province of Rio Negro, Argentina.
OBJECTIVE
The primary objective of the Metallurgical
Testwork was to ascertain the practicability of recovering the
metallic minerals and metal elements, mainly gold, from the
estimated inferred resource zones and varied geologic realms of San
Roque deposit and report the finding in the Metallurgical
Report.
Robert Abenante, CEO of Iconic Gold, summed up
the report with the following: “Management and its technical
consultants believe the Metallurgical Testwork objective has been
expertly and successfully achieved. We interpret the extensive
metallurgical testing results in the Metallurgical Report as being
very positive overall for the current stage of the Property, and
view them as a green light to move forward with continued
exploration and evaluation of the Property.”
BACKGROUND
SGS has an 80-year history of metallurgical
testing in Canada. The Metallurgical Report was initiated under
contract late 2021, but COVID-19 related issues prevented adherence
to normal timelines. Preparations and job characterizations leading
into the 172 page Metallurgical Report are detailed in two prior
Company news releases: the first is titled “Iconic Gold Engaged in
San Roque Project Extractive Metallurgical Testing", dated November
16, 2021, and the second is titled “Iconic Gold Highlights its
Current Resource Findings and Geometallurgical Program for San
Roque”, dated November 29, 2021. The Company has also posted on its
website and on SEDAR, the Property’s National Instrument 43-101 –
Standards of Disclosure for Mineral Projects (“NI
43-101”) technical report titled, “Technical Report and
Mineral Resource Estimate on the San Roque Project, Rio Negro
Province, Argentina” with an effective date of September 10, 2019,
authored by Tetra Tech Canada Inc. (“Tetra
Tech”), a prominent, global geologic and
engineering consulting firm.
OVERSIGHT
The Company contracted Tetra Tech to
independently select the samples for the Metallurgical Testwork as
well as to oversee, guide and provide ongoing advice for and review
of the Metallurgical Testwork results. Jianhui (John) Huang, Ph.D.,
P.Eng. and Senior Metallurgist at Tetra Tech with extensive
practice in mineral processing, metallurgy and chemical
engineering, led on overseeing the Metallurgical Testwork.
Dr. Huang offered his general assessment of the
findings: “The test results indicate that the mineralized samples
tested respond well to direct cyanidation, excluding the samples
from the transition and sulfide zones of Zone 25 deposit. The
sulfide samples respond reasonably well to the flotation
concentration to produce lead and zinc concentrates. These
Metallurgical Testwork results clearly justify carrying further
metallurgical testwork to a more advanced level, especially the
heap leach tests on the oxide samples.”
SAMPLES TESTED
The Company provided SGS with 191 kilograms of
San Roque drill core samples for the Metallurgical Testwork. This
material consisted of 61 core splits of original assay sample run
intervals that represent about 58 meters of quartered HQ size drill
cores and were obtained from 19 widely spaced drill holes. These
samples were independently selected by a Tetra Tech geologist in
such a way so as to fairly represent the mineralization in all four
separate estimated Inferred Mineral Resource zones as defined in
the Property’s NI 43-101 report as well as the down hole oxide,
transition oxide to sulfide, and sulfide (unoxidized) segments of
each of those horizons as well as the varied rock types hosting
mineralization. SGS appropriately blended the core samples into 13
composite samples and used those as feed for individual tests aimed
at characterizing the extractive metallurgy of each of the oxide,
translon and sulfide horizons. The intent of this geometallurgical
program is to ultimately create a geologically based predictive
modeling for the estimated Inferred Mineral Resource zones of the
Property.
The layout of the four zones of mineralization
as presented in the NI 43-101 report is displayed in the Company’s
November 29, 2022 news release available on SEDAR (See Figure
1).
CONCLUSIONS
The Property accommodates a porphyry-scale
low-sulphidation epithermal polymetallic mineral deposit in
Jurassic age volcanics that is endowed primarily with gold and
sulfides of lead, zinc and to a greatly lesser extent copper. The
sulfide minerals are oxidized to an average depth of 38 meters
which includes a 5 to 8 meter transition interval of partially
oxidized sulfides.
- Bottle
roll cyanidation
(leach retention time of
72 hours)
of -10 mesh crushed
oxidized material from
two (Zone
Griselda - Del
Indio and Zone 51) of the
four estimated inferred
oxide resource zones representing
71.8% of the total
estimated inferred oxide
resource tonnage
shows
86.3% gold recovery and
21.2% silver recovery with normal
reagent consumption (0.16 kg/t NaCN + 0.95 kg/t
CaO). The third estimated inferred oxide resource zone,
Zone 25, showed recoveries of 65.6% for gold and 63.4% for silver,
also with 33.2% for copper. Oxidized material from the fourth zone,
Zone 34, was not tested. Management believes these results clearly
show potential for Heap Leach precious metals recovery for the
oxidized mineralization on the Property.
- Some of the
tested samples show that some of the gold may occur as
fine-grained nugget gold.
- Gravity
concentration of all Metallurgical Testwork samples (oxide,
transition and sulfide horizons from all four resource zones)
produced an average concentrate grade of 107 g/t Au with 356 g/t Ag
at average recoveries of 18.9% for the gold and 4.9% of the silver.
Overall gold and silver
recovery by
combining
their respective gravity
recoveries with gravity
tailing bottle roll
cyanidation (at
80% passing 75 microns for a leach
retention time of 48 hours)
averages 88.2%
for gold and 63.9% for
silver.
- Rougher flotation trial runs on all
13 of the metallurgical samples determined that
the sulfides
and their contained gold generally
responded well to recovery by conventional
flotation technology. It was, however, also established
that the targeted base metals in the oxide horizon to not respond
well to the flotation recovery. That finding effectively
reduces the Property’s
NI 43-101 estimated inferred resource for contained lead
and zinc by approximately 15% and 10% respectively.
- The open
circuit cleaner froth flotation runs
produced lead concentrates from
Metallurgical Testwork samples
representing the sulfide horizons of Zone
Griselda – Del Indio, Zone 25 and Zone 51
averaging 55.5% Pb and 11.1% Zn
with 86 g/t Au and 971 g/t Ag. The open
circuit zinc concentrates from the same samples average 38.4%
Zn and 5.1% Pb with 10.2g/t Au
and 201 g/t Ag. The Metallurgical Report
states: “There is likely opportunity for considerable improvements
to the zinc flotation conditions with further optimization.”
- More advanced
metallurgical testing incorporating
locked cycle flotation circuits
is projected to produce salable lead concentrate (>55% Pb) and
zinc concentrate (>45% Zn). The
precious metals along with copper are expected to chiefly report to
the lead concentrate.
- Multi-element assay on the open
circuit cleaner flotation concentrates shows that impurities in the
concentrates are expected to be lower than the penalty
thresholds set by most smelters.
- Three samples
were subjected to standard Bond ball mill grindability tests.
Two (Del Indio Oxide and Del Indio
Sulfide) were classified as being
moderately hard (due to
silicification alteration),
with an average ball
mill work index of 16.4 kWh/tonne and one
(Zone 34 Sulfide) was found to be very
hard. However, the very hard sample represents an
estimated inferred resource zone of the deposit comprising only 2%
of the overall estimated inferred sulfide resource tonnage of the
Property. Notably, the potential mine site is close to high tension
500 KVA power lines of the National Grid, and would likely not have
to rely on expensive on-site diesel power generation.
- Three samples,
including cyanidation leach residues and flotation tailings, were
evaluated for acid generation potentials. All were found to
be in the range for potentially generating acid drainage that would
require neutralization. This is a normal characteristic of
nearly all sulfide mineral deposits.
- Mineralogical
analyses (QEMSCAN DATA) identified the vanadium hydroxide mineral
Mottramite in the oxidized samples, which has also recently been
corroborated by other petrographic studies. It is probable that
most of the lead and zinc values in the oxidized portions of the
four estimated inferred resource zones are tied up in the
Mottramite which is not amenable to cyanide leaching or
conventional mill flotation recoveries. Vanadium is a valuable
element and would reside in the spent leach residues after precious
metal extraction. Management thinks that could become a valuable
resource for the future as current industry metallurgical research
shows promise for the economic processing recovery of vanadium
hydroxides.
QUALIFIED
PERSON
The technical information disclosed within this
news release has been prepared by Richard R. Walters. He is a
Qualified Person as defined in NI 43-101. Mr. Walters is a
certified Professional Geologist by the American Institute of
Professional Geologists (AIPG), holds a Legion of Honor Membership
in the Society for Mining, Metallurgy and Exploration (SME), and is
a licensed geologist in the State of Washington.
Additionally, metallurgist Dr. Jianhui Huang,
P.Eng. has reviewed the technical information herein concerning the
testwork.
ON BEHALF OF INTERNATIONAL ICONIC GOLD EXPLORATION
CORP. "Rob Abenante"Robert Abenante, President & CEO
Contact Information:
Phone: 236-259-0279Email:info@iconicgold.com Website:
www.iconicgold.com
For further information regarding International
Iconic Gold Exploration Corp., please refer to the Company’s
filings available on SEDAR (http://www.sedar.com) or at ICON’s
Website (http://www.iconicgold.com)
Disclaimer for Forward-Looking
Information
Certain statements in this release are
forward-looking statements, which reflect the expectations of
management regarding the Company and the Property. Forward-looking
statements consist of statements that are not purely historical,
including any statements regarding beliefs, plans, expectations or
intentions regarding the future, including but not limited to,
statements regarding: (i) the results, interpretations and
expectations therefrom from the Company’s Metallurgical Testwork;
(ii) any potential mineral value amounts or estimates as a
resulting of the Metallurgical Testwork or their recovery; (iii)
probable recovery methods to obtain any mineral deposits, in part
or as a whole, located on the Property; (iv) the expectations of
management with respect to the impurities in mineral concentrates
locate on the Property; and (v) other general statements made by
the Company regarding the intended exploration activities to be
undertaken on the Property. Forward-looking statements involve
known and unknown risks, uncertainties and other factors which may
cause the actual results, performance or achievements of the
Company to differ materially from any future results, performance
or achievements expressed or implied by the forward-looking
information. Such risks and other factors include the inability of
the Company to execute its business plans and carry out planned
future activities as presently contemplated, including those
specific to its early-stage metallurgical test program currently
being conducted on San Roque and, more specifically, its design,
timeline, and anticipated findings. The novel strain of
coronavirus, COVID-19, and ongoing dispute between the sovereign
state of Ukraine and Russia also pose new risks that are currently
indescribable and immeasurable. Other factors may also adversely
affect the future results or performance of the Company, including
general economic, market or business conditions, future prices of
gold or other precious metals, changes in the financial markets and
in the demand for gold or other precious metals, changes in laws,
regulations and policies affecting the mineral exploration
industry, and risks related to the Company’s investments and
operations in the mineral exploration sector, as well as the risks
and uncertainties which are more fully described in the Company’s
annual and quarterly management’s discussion and analysis and other
filings made by the Company with the Canadian securities regulatory
authorities under the Company’s profile on SEDAR. Readers are
cautioned that forward-looking statements are not guarantees of
future performance or events and, accordingly, are cautioned not to
put undue reliance on forward-looking statements due to the
inherent uncertainty of such statements. These forward-looking
statements are made as of the date of this news release and, unless
required by applicable law, the Company assumes no obligation to
update the forward-looking statements or to update the reasons why
actual results could differ from those projected in these
forward-looking statements.
Neither TSX Venture Exchange nor its Regulation
Services Provider (as that term is defined in the policies of the
TSX Venture Exchange) accepts responsibility for the adequacy or
accuracy of this release.
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