Trailbreaker Resources Ltd. (TBK.V)
(“Trailbreaker” or “the Company”) is pleased to announce it has now
added the 919-hectare (ha) Sheldon property, located in central
Yukon, as part of its robust property portfolio.
The Sheldon property covers a “Reduced Intrusion
Related Gold System” (RIRGS), located within the Tombstone Gold
Belt of the Selwyn Basin. The Tombstone Belt is host to gold
(Au)-bearing prospects and deposits including: Snowline Gold’s
Valley discovery (e.g. 410.0 m @ 1.89 g/t Au)1; Kinross Gold’s Fort
Knox mine (10 million ounces of gold, including past production)2
and Victoria Gold’s Eagle mine (4.3 million ounces of gold)3.
The property is located along the North Canol
Road approximately 110 km northeast of the town of Ross River
(Figure 1). The property has excellent infrastructure with road
access within 800 m of the property boundary.
Highlights of the Sheldon
Property
- Located within the
geologically fertile and highly prospective Tombstone Gold
Belt of the mining-friendly Yukon Territory;
- Road
accessible via the North Canol Road, approximately 110 km
northeast of Ross River;
- Historic rock
samples assayed up to 6.17 g/t Au;
- Reduced-Intrusion
Related Gold System (RIRGS) style mineralization
evident on the property, with many characteristic RIRGS geological
features;
-
Underexplored, with a number of strong geochemical
and geophysical targets identified;
- 100% owned
by Trailbreaker Resources, with no underlying payments or
royalties.
Figure 1: Location of the Sheldon
property within the Tombstone Gold Belt and the Selwyn
Basin.
Exploration Potential
The Sheldon property is underexplored and has
undergone only short surface sampling campaigns between the early
1990s and 2012.
A regional-scale Z-Axis Tipper Electromagnetic
(ZTEM) survey was flown over a significant portion of the Selwyn
Basin in 2008. This data was reprocessed by Condor Consulting in
20134 and made publicly available by the Yukon Geological Survey.
The data from this survey shows magnetic and conductivity
characteristics across the Sheldon property that are common in
RIRGS deposits. These features include a high resistivity signature
associated with the felsic intrusive rocks and magnetic high
features surrounding the intrusions, associated with
pyrrhotite-bearing hornfelsed sedimentary rocks. Of particular
interest are two magnetic ‘pimples’ within the claim boundaries
that may reflect strongly hornfelsed rocks above a blind intrusion
(Figure 2). As the highest grades of RIRGS mineralization commonly
occur in upper portions of fertile intrusions, the potentially
intact carapace in the northwest and southeast property areas
highlight attractive exploration targets. Neither of these target
areas have undergone any documented exploration .
Most geochemical sampling and mapping to date
has been focused on the southern extent of the Sheldon Stock, where
gold mineralization was first encountered. Although less
geochemical coverage occurred along the northern flank of the
stock, the more limited work revealed consistently elevated gold
values from rock and soil sampling. Additionally, this area has the
best correlation between gold (Au) and tellurium (Te), a robust
pathfinder element for Au in RIRGSs. The spacing between sampling
in this area is such that a significant deposit could occur between
sample locations, based on the approximate footprint of other RIRGS
deposits (Figure 3), including Snowline Gold’s Valley prospect.
Figure 2: ‘Magnetic’ pimples highlighted
in yellow where strongly hornfelsed sedimentary rocks may overlie
blind intrusive centers. No exploration work has been conducted on
these targets. Low conductivity (high resistivity) features
indicate the presence of an intrusive center at the Sheldon
property, as confirmed from regional and local
mapping.
History
Gold-bearing quartz veins were first recognized
at Sheldon by the Geological Survey of Canada (GSC) in 1944. In
1990, a regional stream sediment survey conducted by the GSC
highlighted multiple drainages with anomalous arsenic and
antimony.
The work conducted by the GSC, along with the
then-recent discovery at Dublin Gulch (now Victoria Gold’s Eagle
Mine) in Yukon, resulted in the initial staking of the property in
1991. Between 1991-1993, surface rock and soil geochemical
sampling, as well as geological mapping, were completed, targeting
Fort Knox style mineralization. Rock chip samples from this work
returned assays as high as 6.17 g/t Au 5, from
quartz veining in the granitic Sheldon Stock (Figure 3).
The claims were restaked in 2011, followed by a
short prospecting and sampling program conducted in 2012. Rock
samples from this program graded up to 2.08 g/t Au
6.
Since 2012, no work has been completed on the
property. The Sheldon block is a legacy property originally held by
Goldstrike Resources Ltd. Trailbreaker owns 100% of the property
with no underlying payments or royalties.
Figure 3: Gold in soil and rock samples
overlain on mapped geology of the Sheldon property. Gold shows a
strong correlation with the granitic stock and locally the
hornfelsed sedimentary rocks. White dashed ellipsoid indicates 1 km
x 1.2 km area with limited sampling and elevated Au-Te values in
surrounding samples.
Geology
The Sheldon property is centered on the
mid-Cretaceous Sheldon stock, a member of the Tombstone Gold Belt
intrusive suite emplaced within the Selwyn Basin of Yukon. The
Sheldon stock is described as a polyphase biotite granitic to
granodioritic intrusion, emplaced during a regional extensional
event coincident with emplacement of the Tombstone intrusive suite.
Gold mineralization is associated with quartz and arsenopyrite
veining within the Sheldon Stock, as well as in hornfelsed
sedimentary rocks surrounding the stock.
The Sheldon property displays many classic
features of RIRGS deposits 7, including, but not limited to:
- Sheeted quartz
veins hosted in a mid-Cretaceous granite;
- Intrusive rocks
with biotite>hornblende, indicating volatile content of the
intrusion;
- Constrained size of
intrusive stock is favourable for hosting RIRGS;
- Strong
gold-arsenic-bismuth-tellurium-tungsten (Au-As-Bi-Te-W) geochemical
association;
- Typical geophysical
characteristics (resistivity high and magnetic high around stock)
of a felsic intrusion surrounded by a hornfelsed aureole in
sedimentary rocks
Future work recommendations
Additional geochemical sampling and geological
mapping is recommended to be completed over areas of low sample
density, particularly where magnetic ‘pimples’ occur in the
northwest and southeast of the property. This is also recommended
to be done along the northern margin of the Sheldon Stock, where a
strong Au-Te association is observed.
A higher-resolution magnetic survey will aid in
further defining the hornfelsed alteration zone and granitic
intrusive boundaries.
Follow-up drill testing should focus on the most
prospective geological and geochemical targets to test for
bulk-tonnage RIRGS mineralization in the vertical dimension.
Message from the President
“Adding the RIRGS Sheldon property to our
portfolio greatly increases our exposure to potential significant
gold discoveries within the exciting Tombstone Gold Belt, with no
additional cost to the shareholders. With the recent discoveries by
Snowline Gold, which have resulted in an enhanced understanding of
the Yukon-based RIRGS systems, we have re-evaluated this target. We
are impressed with the similarities, even at this early stage. We
feel that the geological characteristics of this project suggest
that there is potential for multiple mineralized zones to occur,
associated with the Sheldon Stock complex, within our existing
claim boundaries.”
ON BEHALF OF THE BOARD
Daithi Mac GearailtPresident and Chief Executive Officer
Carl Schulze, P. Geo., Consulting Geologist with Aurora
Geosciences Ltd, is a qualified person as defined by National
Instrument 43-101 for Trailbreaker's BC and Yukon exploration
projects, and has reviewed and approved the technical information
in this release.
Other
For new information about the Company’s
projects, please visit Trailbreaker’s website at
TrailbreakerResources.com and sign up to receive news. For further
information, follow Trailbreaker’s tweets at
Twitter.com/TrailbreakerLtd, use the ‘Contact’ section of our
website, or contact us at (604) 681-1820 or at
info@trailbreakerresources.com.
References1)
https://snowlinegold.com/news/2)
https://www.kinross.com/operations/default.aspx#americas-fortknox3)
https://vgcx.com/production/eagle-gold-mine/overview/4)
https://data.geology.gov.yk.ca/Reference/68174#InfoTab5) Doherty,
R.A., J van Randen, J.A., 1994, Report on the 1994 geological and
geochemical assessment work on the Mount Sheldon property,
Whitehorse Mining District, Yukon, Assessment Report #0932206) C.
Jones, 2013, Report on the CANDO 2 property: 2012 exploration
program, Whitehorse Mining District, Yukon, Assessment Report #
0963517) Hart, C.J.R., 2007, Reduced Intrusion-related Gold
Systems, in Goodfellow, W.D., ed, Mineral deposits of Canada: A
synthesis of Major Deposit Types, District Metallogeny, the
Evolution of Geological Provinces, and Exploration Methods:
Geological Association of Canada, Mineral Deposits Division,
Special Publication No. 5, p. 95-112
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Forward-Looking Statements
Statements contained in this news release that
are not historical facts are "forward-looking information" or
"forward-looking statements" (collectively, "Forward-Looking
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legislation and the United States Private Securities Litigation
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making the forward-looking statements in this news release, if any,
Trailbreaker has applied several material assumptions, including
the assumption that general business and economic conditions will
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at:https://www.globenewswire.com/NewsRoom/AttachmentNg/1adb71a6-ce6e-4d22-931f-11390f9342d1https://www.globenewswire.com/NewsRoom/AttachmentNg/2bb8b517-6432-45e2-8a68-abddde6b6eb6https://www.globenewswire.com/NewsRoom/AttachmentNg/54363db8-2e65-4732-bcc8-e965cb9deddb
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