Vista Gold Corp. (NYSE American and TSX: VGZ) (“Vista” or the
“Company”) today announced positive results for the two remaining
holes in Phase 2 of the ongoing drilling program at the Company’s
100% owned Mt Todd gold project (“Mt Todd” or the “Project”)
located in Northern Territory, Australia.
Highlights
VB21-012 – Intersected over 100 meters of
mineralization, inclusive of three zones of +1 grams gold per tonne
(“g Au/t”) subvertical vein-sets
- 10.0 meters @ 1.29 g Au/t from 469
meters down hole
- 22.7 meters @ 1.10 g Au/t from 503
meters down hole
- 13.2 meters @ 1.03 g Au/t from 566
meters down hole
VB21-013 – Drilled perpendicular to VB21-002 and
VB21-005 to validate structural orientation
- 6.0 meters @ 1.25 g Au/t from 130
meters down hole
- 12.0 meters @ 3.11 g Au/t from 144
meters down hole
Frederick Earnest, President and CEO of Vista,
commented, “Phase 2 of our drilling program successfully achieved
our primary objective of identifying multiple areas north of the
Batman deposit where additional resources might be added most
efficiently in the future. In all, we drilled 3,725 meters in this
phase and intersected good intervals and gold grades in each hole.
We have verified continuity of gold mineralization extending from
the Batman deposit northeast over 1.4 km and down dip more than 400
meters. Holes VB21-012 and VB21-013 are the last two holes in this
phase of drilling. Our next phase of drilling will provide some
infill to our drilling to date, but importantly, continue to step
out toward the Quigleys deposit.”
“We were very pleased to have received a grant
from the Northern Territory Government under its Geophysics and
Drilling Collaborations Program (the “Program”) to co-fund
VB21-012. This gave us the opportunity to drill a hole directed at
increasing our understanding of the geology as we move north of the
Batman deposit. The Program awarded $1.7 million in grants to
support a diverse range of exploration drilling programs and
geophysical surveys across the Northern Territory. Mt Todd was one
of 15 successful projects to receive a grant from a total of 38
applicants. Fifty percent of the applicable direct drilling and
assay costs, up to a maximum of A$110,000, will be co-funded from
the Program.”
“Hole VB21-012 was drilled to a total depth of
901 meters. The primary objective was to intersect the granite
intrusive. From our drilling at Batman, we expected the intrusive
to be present at a depth of approximately 800 meters. We did not
intercept the intrusive, but gained a great deal of information
about the basement rocks at Mt Todd. And while not the primary
objective of this hole, we intersected three zones of +1 g Au/t
material within a broad zone of mineralization. Hole VB21-013 was
drilled to validate the orientation of our drilling and to provide
the assurance that we have not introduced a bias into our
understanding of the structures due to drillhole orientation. I’m
pleased with the thoroughness of our exploration programs and our
understanding of the geology and resource growth potential in the
area north of the Batman deposit.”
Mr. Earnest concluded, “In addition to the
ongoing exploration, completing a definitive feasibility study
(“DFS”) for Mt Todd will be an important milestone and catalyst. We
are pleased to report that engineering and other work related to
the DFS is on schedule and on budget. We are closely reviewing
interim reports and look forward to announcing the results of the
DFS in Q1 of 2022. Australia is making significant progress in
achieving its vaccination goals and we are hopeful this will lead
to a relaxing of the present travel restrictions, which will play
an important role in obtaining a strategic development
partner.”
Table 1 – Summary of Assay
Results
Hole No. |
Grid Co-ordinates |
Survey Data |
Intersections |
MGA94 Grid Easting |
MGA94 Grid Northing |
RL (m) |
Azimuth (°) |
Dip (°) |
Depth (m) |
|
From (m) |
To (m) |
Interval (m) |
True Thickness (m) |
Grade (g/t Au) |
Sample Type |
VB21-012 |
188435.0 |
8436405.0 |
155.0 |
260.9 |
-50.0 |
901.0 |
|
469.0 |
479.0 |
10.0 |
6.4 |
1.29 |
HQ ½ Core |
|
|
|
|
|
|
|
including |
477.0 |
479.0 |
2.0 |
1.3 |
4.48 |
HQ ½ Core |
|
|
|
|
|
|
|
and |
503.0 |
525.7 |
22.7 |
14.6 |
1.10 |
HQ ½ Core |
|
|
|
|
|
|
|
and |
555.3 |
579.2 |
23.9 |
15.3 |
0.77 |
HQ ½ Core |
|
|
|
|
|
|
|
including |
566.0 |
579.2 |
13.2 |
8.5 |
1.03 |
HQ ½ Core |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
VB21-013 |
187423.0 |
8436409.0 |
169.0 |
86.4 |
-53.0 |
311.9 |
|
130.0 |
136.0 |
6.0 |
3.9 |
1.25 |
HQ ½ Core |
|
|
|
|
|
|
|
and |
144.0 |
156.0 |
12.0 |
7.9 |
3.11 |
HQ ½ Core |
|
|
|
|
|
|
|
including |
144.0 |
148.6 |
4.6 |
3.0 |
1.62 |
HQ ½ Core |
|
|
|
|
|
|
|
including |
151.0 |
154.0 |
3.0 |
2.0 |
2.67 |
HQ ½ Core |
Notes:
(i) |
Results are based on 50g fire assay for Au. |
(ii) |
Intersections are from diamond
core drilling with half-core samples with 1 meter representative
samples. |
(iii) |
Core sample intervals were
constrained by geology, alteration or structural boundaries,
intervals varied between a minimum of 0.2 meters to a maximum of
1.2 meters. |
(iv) |
Mean grades have been calculated
on a 0.4 g Au/t lower cut-off grade with no upper cut-off grade
applied, and maximum internal waste of 4.0 meters. |
(v) |
All intersections are downhole
intervals and reflect approximate true widths. |
(vi) |
All downhole deviations have been
verified by downhole camera and/or downhole gyro. |
(vii) |
Collar coordinates surveyed by
Earl James & Assoc., an independent surveyor, using Trimble R8
GNSS. |
(viii) |
The Company maintains a quality
assurance/quality control (“QA/QC”) program, as further described
below. |
(ix) |
The assay laboratories
responsible for the assays were Northern Analytical Laboratories
Pty Ltd (“NAL”), an independent ISO 9000 certified lab, Pine Creek,
NT and Genalysis Laboratory Services Pty Ltd, Perth, WA, which is
also independent from Vista. |
Discussion of Results
Hole VB21-012
VB21-012 was drilled to test the potential depth
of the granitic intrusive under the Northern and Southern Cross
zones and for an enriched zone within the Southern Cross Zone
(“SXZN”) close to the intrusive. While VB21-012 did not intersect
the intrusive, alteration intensity did increase with depth and, as
veining persisted, the hole was pushed an additional 100 meters
past planned depth (see Figure 2). VB21-012 has shown that the
SXZN, both persists and thickens with depth. The SXZN has three +1
g Au/t zones with an overall width of 100 meters (when aggregated),
with dip continuity of +500 meters and a strike length of
approximately 1.1 km. Vein assemblages consist dominantly of
quartz, pyrrhotite, chalcopyrite, and sphalerite, with galena
occasionally present. The SXZN appears similar to the NXZN, which
exhibits the potential to host grades twice that of the Batman
deposit.
Consistent with our standard drilling protocols,
VB21-012 was drilled with oriented core and has provided
orientation data for bedding, veining and structures that will
greatly assist in understanding the mineralizing controls and
targeting future drilling.
Hole VB21-013
VB21-013 was planned to intersect the Northern
Cross Zone (“NXZN”) from the west instead of the east as drilled
previously on section 6400N (approximately 1,000 meters north of
the existing Batman Pit). VB21-013 intersected the NXZN between the
intercepts in holes VB21-005 and VB21-002, while also confirming
the thickness of the structure by intercepting it from the opposite
direction. Structural measurements have indicated that at section
6400N, the NXZN mineralized veins are subvertical and strike nearly
north-south. The veins vary in thickness and number. The NXZN has
intersected four zones to date, two of which are very well
developed on section 6400N.
The NXZN was intersected where predicted and
displays strong upper and lower contact mineralization. Hole
VB21-013, drilled from west to east, has shown a tighter,
higher-grade structure than the holes drilled east to west. The
revised drill direction appears appropriate and is consistent with
the measured vein orientations of the high-grade.
A portion of future work will focus on defining
high-grade mineralization within the NXZN, which is open in all
directions.
Photos – Drill intercepts from VB21-013
showing
mineralizationhttps://www.globenewswire.com/NewsRoom/AttachmentNg/82ca94ff-4c18-4ab1-b198-e9a00c9ad28ahttps://www.globenewswire.com/NewsRoom/AttachmentNg/5db7b09c-2389-463c-8523-661513b4446ehttps://www.globenewswire.com/NewsRoom/AttachmentNg/b3c3ed3e-afc0-4754-a27b-66b237211520
Figure 1 – Plan View of Drill
Holeshttps://www.globenewswire.com/NewsRoom/AttachmentNg/599c8cba-ff3f-497f-9ae1-f91ea96a5f43
Figure 2 - Cross Section with
VB21-012https://www.globenewswire.com/NewsRoom/AttachmentNg/e0341a92-051e-494f-97ac-69914a8b6787
Figure 3 - Cross Section with VB21-013
and interpreted
zoneshttps://www.globenewswire.com/NewsRoom/AttachmentNg/414539ab-cb9e-4d90-9f46-8c5ba9f21069
The sampling method and approach for the surface geochemistry
and grab samples is as follows:
- Soil samples are planned on a
regular grid and a sample sheet is generated.
- GPS is used to locate sample
positions and a pelican pick is used to clear debris and any
topsoil from the sample location 3.
- The hole is dug to the B horizon
and 7 to 10 kg of soil is collected and coarse sieved to remove
stones etc., a fine mesh is then employed and the entire sample
recovered post sieving is bagged.
- Soil sampling is usually undertaken
in the dry season, however if wet samples are obtained, they are
dried in the logging shed prior to sieving.
- Sample bags are calico and
purchased pre-numbered, these are then packaged in groups of 5 for
transportation to NAL, an independent ISO 9000 certified lab, Pine
Creek, NT and Genalysis Laboratory Services Pty Ltd, Perth, WA,
which is also independent from Vista.
- As the site is closed
to public access, no special security measures are
undertaken.
- A sample submission sheet is sent
to the lab, detailing required methodology, and number of
samples.
- No identifying data relating to
sample location is recorded on the bags submitted or the paperwork
beyond bag numbers.
Rock chip and soil geochemical samples are
routinely collected to determine if the potential exists for
anomalous gold values below the surface. The presence of
anomalous gold grades is not a guarantee of subsurface
mineralization. While both rock chip and soil samples have
sampling procedures, it is not considered rigorous enough to be
relied upon for use in the estimation of mineral
resources. Surface soil and rock chip samples are merely
considered to be potential indicators of subsurface
mineralization. Since the rock chip and soil assays are not
used in mineral resource estimation, it is rare that any additional
QA/QC or check assaying would be completed. The data are used
on an as received basis.
It is the QP’s (as defined below) opinion that
the sample preparation methods and quality control measures
employed before dispatch of samples to an analytical or testing
laboratory ensured the validity and integrity of samples taken.
John Rozelle, Vista’s Sr. Vice President, a
Qualified Person (“QP”) as defined by Canadian National Instrument
43-101 – Standards of Disclosure for Mineral Projects, has verified
the data underlying the information contained in and has approved
this press release. The information contained in this press release
does not change any of the mineral resources or reserves estimates
contained in Vista’s October 7, 2019 NI 43-101 Technical Report, Mt
Todd Gold Project, 50,000 tpd Preliminary Feasibility Study,
Northern Territory, Australia. The information contained in this
press release is provided to inform the reader of the growth of our
geologic understanding of the Project. There has been insufficient
exploration to define a mineral resource with respect to the
exploration target areas and it is uncertain if further exploration
will result in the exploration target areas being delineated as a
mineral resource.
Data Verification and QA/QC
The sampling method and approach for the
drillholes are as follows:
-
The drill core, upon removal from the core barrel, is placed into
plastic core boxes;
-
The plastic core boxes are transported to the sample preparation
building;
-
The core is marked, geologically logged, geotechnically logged,
photographed, and sawn into halves. One-half is placed into sample
bags as one-meter sample lengths, and the other half retained for
future reference. The only exception to this is when a portion of
the remaining core has been flagged for use in metallurgical
testwork;
-
The bagged samples have sample tags placed both inside and on the
outside of the sample bags. The individual samples are grouped into
“lots” for submission to NAL, a certified lab, for preparation and
analytical testing; and
-
All of this work was done under the supervision of a Vista
geologist.
Processing of the core included photographing,
geotechnical and geologic logging, and marking the core for
sampling. The nominal sample interval was one meter. When this
process was completed, the core was moved into the core
cutting/storage area where it was laid out for sampling. The core
was laid out using the following procedures:
-
One meter depth intervals were marked out on the core by a member
of the geologic staff;
-
Core orientation (bottom of core) was marked with a solid line when
at least three orientation marks aligned and used for structural
measurements. When orientation marks were insufficient an estimated
orientation was indicated by a dashed line;
-
Geologic logging was then done by a member of the geologic staff.
Assay intervals were selected at that time and a cut line marked on
the core. The standard sample interval was one meter, with a
minimum of 0.2 meters and a maximum of 1.2 meters;
-
Blind sample numbers were then assigned based on pre-labeled sample
bags. Sample intervals were then indicated in the core tray at the
appropriate locations; and
-
Each core tray was photographed and restacked on pallets pending
sample cutting and stored on site indefinitely.
The core was then cut using diamond saws with
each interval placed in sample bags. At this time, the standards
and blanks were also placed in plastic bags for inclusion in the
shipment. A reference standard or a blank was inserted at a minimum
ratio of 1 in 10 and at suspected high grade intervals additional
blanks sample were added. Standard reference material was sourced
from Ore Research & Exploration Pty Ltd and provided in 60 g
sealed packets. When a sequence of five samples was completed, they
were placed in a shipping bag and closed with a zip tie. All of
these samples were kept in the secure area until crated for
shipping.
Samples were placed in crates for shipping with
100 samples per crate (20 shipping bags). The crates were stacked
outside the core shed until picked up for transport and shipped to
NAL in Pine Creek, Northern Territory, for standard fire assays. At
the lab, the samples are pulverized and split down to 50-gram assay
samples prior to assaying. The industry-standard 3 assay-ton fire
assay is followed by an atomic absorption (AA) finish, except where
results report a result of greater than 3 g Au/tonne, and then a
gravimetric finish is used to report final results.
The QP is satisfied that sample security
measures meet industry standards. Statistical analysis of the
various drilling populations and QA/QC samples has not identified
or highlighted any reasons to not accept the data as representative
of the tenor and grade of the mineralization estimated at the
Batman deposit.
About Vista Gold Corp.
Vista is a gold project developer. The Company’s
flagship asset is the Mt Todd gold project located in the Tier 1,
mining friendly jurisdiction of Northern Territory, Australia.
Situated approximately 250 km southeast of Darwin, Mt Todd is the
largest undeveloped gold project in Australia and, if developed as
presently designed, would potentially be Australia’s fourth largest
gold producer on an annual basis, with lowest tertile in-country
and global all-in sustaining costs. All major operating and
environmental permits have now been approved.
For further information, please contact Pamela
Solly, Vice President of Investor Relations, at (720) 981-1185.
Forward Looking Statements
This press release contains forward-looking
statements within the meaning of the U.S. Securities Act of 1933,
as amended, and U.S. Securities Exchange Act of 1934, as amended,
and forward-looking information within the meaning of Canadian
securities laws. All statements, other than statements of
historical facts, included in this press release that address
activities, events or developments that we expect or anticipate
will or may occur in the future, including such things as our
belief that drill results from VB21-012 provided a great deal of
information about the basement rocks at Mt Todd; our belief that
drill results from VB21-013 validated the orientation of our
drilling and provided assurance that we have not introduced a bias
into our understanding of the structures due to drillhole
orientation; our belief that the completion of a DFS for Mt Todd
will be an important catalyst; our expectation to finalize the DFS
in Q1 2022; our belief that Australia is making significant
progress in achieving its vaccination goals; our belief that
Australia’s relaxation of its present travel restrictions will play
an important role in reaching our goal of having a strategic
development partner; our belief that the Southern Cross Zone, which
exhibits the potential to host grades twice that of the Batman
deposit; and our belief that Mt Todd is the largest undeveloped
gold project in Australia and, if developed as presently designed,
would potentially be Australia’s fourth largest gold producer on an
annual basis, are forward-looking statements and forward-looking
information. The material factors and assumptions used to develop
the forward-looking statements and forward-looking information
contained in this press release include the following: our approved
business plans, exploration and assay results, results of our test
work for process area improvements, mineral resource and reserve
estimates and results of preliminary economic assessments,
prefeasibility studies and feasibility studies on our projects, if
any, our experience with regulators, and positive changes to
current economic conditions and the price of gold. When used in
this press release, the words “optimistic,” “potential,”
“indicate,” “expect,” “intend,” “hopes,” “believe,” “may,” “will,”
“if,” “anticipate,” and similar expressions are intended to
identify forward-looking statements and forward-looking
information. These statements involve known and unknown risks,
uncertainties and other factors which may cause the actual results,
performance or achievements of the Company to be materially
different from any future results, performance or achievements
expressed or implied by such statements. Such factors include,
among others, uncertainties inherent in the exploration of mineral
properties, the possibility that future exploration results will
not be consistent with the Company's expectations; there being no
assurance that the exploration program or programs of the Company
will result in expanded mineral resources; uncertainty of mineral
resource and reserve estimates, uncertainty as to the Company’s
future operating costs and ability to raise capital; risks relating
to cost increases for capital and operating costs; risks of
shortages and fluctuating costs of equipment or supplies; risks
relating to fluctuations in the price of gold; the inherently
hazardous nature of mining-related activities; potential effects on
our operations of environmental regulations in the countries in
which it operates; risks due to legal proceedings; risks relating
to political and economic instability in certain countries in which
it operates; uncertainty as to the results of bulk metallurgical
test work; and uncertainty as to completion of critical milestones
for Mt Todd; as well as those factors discussed under the headings
“Note Regarding Forward-Looking Statements” and “Risk Factors” in
the Company’s latest Annual Report on Form 10-K as filed February
25, 2021 and other documents filed with the U.S. Securities and
Exchange Commission and Canadian securities regulatory authorities.
Although we have attempted to identify important factors that could
cause actual results to differ materially from those described in
forward-looking statements and forward-looking information, there
may be other factors that cause results not to be as anticipated,
estimated or intended. Except as required by law, we assume no
obligation to publicly update any forward-looking statements or
forward-looking information; whether as a result of new
information, future events or otherwise.
Cautionary Note to United States
Investors
The United States Securities and Exchange
Commission (“SEC”) limits disclosure for U.S. reporting purposes to
mineral deposits that a company can economically and legally
extract or produce. The technical reports referenced in this press
release uses the terms defined in Canadian National Instrument
43-101 – Standards of Disclosure for Mineral Projects (“NI 43-101”)
and the Canadian Institute of Mining, Metallurgy and Petroleum (the
“CIM”) – CIM Definition Standards on Mineral Resources and Mineral
Reserves, adopted by the CIM Council, as amended (the “CIM
Definition Standards”). These standards are not the same as
reserves under the SEC’s Industry Guide 7 and may not constitute
reserves or resources under the SEC’s newly adopted disclosure
rules to modernize mineral property disclosure requirements (“SEC
Modernization Rules”), which became effective February 25, 2019 and
will be applicable to the Company in its annual report for the
fiscal year ending December 31, 2021. Under the currently
applicable SEC Industry Guide 7 standards, a “final” or “bankable”
feasibility study is required to report reserves, the three-year
historical average price is used in any reserve or cash flow
analysis to designate reserves and all necessary permits and
government approvals must be filed with the appropriate
governmental authority. Additionally, the technical reports uses
the terms “measured resources”, “indicated resources”, and
“measured & indicated resources”. We advise U.S. investors that
while these terms are Canadian mining terms as defined in
accordance with NI 43-101, such terms are not recognized under SEC
Industry Guide 7 and normally are not permitted to be used in
reports and registration statements filed with the SEC. Mineral
resources described in the technical reports have a great amount of
uncertainty as to their economic and legal feasibility. The SEC
normally only permits issuers to report mineralization that does
not constitute SEC Industry Guide 7 compliant “reserves” as
in-place tonnage and grade, without reference to unit measures.
“Inferred resources” have a great amount of uncertainty as to their
existence, and great uncertainty as to their economic and legal
feasibility. It cannot be assumed that any or all part of an
inferred resource will ever be upgraded to a higher category.
U.S. Investors are cautioned not to assume that any part or
all of mineral deposits in these categories will ever be converted
into SEC Industry Guide 7 reserves.
Under the SEC Modernization Rules, the
definitions of “proven mineral reserves” and “probable mineral
reserves” have been amended to be substantially similar to the
corresponding CIM Definition Standards and the SEC has added
definitions to recognize “measured mineral resources”, “indicated
mineral resources” and “inferred mineral resources” which are also
substantially similar to the corresponding CIM Definition Standard.
However there are differences between the definitions and standards
under the SEC Modernization Rules and those under the CIM
Definition Standards and therefore once the Company begins
reporting under the SEC Modernization Rules there is no assurance
that the Company’s mineral reserve and mineral estimates will be
the same as those reported under CIM Definition Standards as
contained in the technical reports prepared under CIM Definition
Standards or that the economics for the Mt Todd project estimated
in such technical reports will be the same as those estimated in
any technical report prepared by the Company under the SEC
Modernization Rules in the future.
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