Vista Gold Corp. Announces Final Results from Phase 2 Drilling at Mt Todd
__________________ NEWS _________________
Vista Gold Corp. Announces Final Results from Phase 2 Drilling at Mt Todd
Denver, Colorado, September 22, 2021 – 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.”
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“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
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.
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
Hole No.
Grid Co-ordinates Survey Data Intersections
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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 mineralization
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Figure 1 – Plan View of Drill Holes
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Figure 2 - Cross Section with VB21-012
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Figure 3 - Cross Section with VB21-013 and interpreted zones
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.
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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;
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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