Arras Minerals Corp. (TSX-V: ARK) (“Arras” or “the
Company”) is pleased to announce assay results from holes
Bg21005 and Bg21006 from the ongoing exploration drill program at
the Beskauga copper-gold deposit and surrounding area (“Beskauga”
or the “Project”).
Highlights:
-
Hole Bg21006 returned a significant intersection
of 689.2 metres (“m”) of mineralization grading 0.76
% copper-equivalent (“CuEq”) or 0.92 gram per
tonne (“g/t”) gold-equivalent (“AuEq”)
(0.60 g/t gold (“Au”), 0.24 % copper (“Cu”), 1.4 g/t silver (“Ag”)
and 12.8 ppm molybdenum (“Mo”)) starting at 43.0 m from surface to
end of hole.
-
Including 120.9 m grading 2.35 % CuEq or 2.84 g/t
AuEq (1.95 g/t Au, 0.69 % Cu, 3.8 g/t Ag and 15.7 ppm Mo)
from 348.9 m depth down-hole.
-
Including an exceptionally high-grade interception of 17 m
grading 7.48 % CuEq or 9.05 g/t AuEq (6.77 g/t Au, 1.78 %
Cu, 8.8 g/t Ag and 24.5 ppm Mo) from 446.0 m depth down-hole.
- And including
99.9 m grading 1.11 % CuEq or 1.34 g/t
AuEq (0.85 g/t Au, 0.38 % Cu, 1.9 g/t Ag and 25.8 ppm Mo)
from 493.1 m depth down-hole.
-
Hole Bg21005 tested, for the first time, an
approximately 400 x 500 meter circular magnetic high immediately
west of the Beskauga deposit. The hole returned 903.6 m of
mineralization grading 0.16% CuEq or 0.20 g/t AuEq (0.16 g/t Au,
0.09 % Cu, 1.2 g/t Ag, and 43.5 ppm Mo) starting at 49 m from
surface and hosted within a strongly potassic-altered
monzodiorite.
Diamond drilling is ongoing at Beskauga with
further assay results expected in the coming months. The Company
has recently changed drilling contractors to have the option to
drill deeper, as required.
Tim Barry, CEO of Arras, commenting on these
latest results, stated, “The Company is pleased to deliver more
exceptional drill results with hole Bg21006 confirming historical
drilling and further increasing the continuity and dimensions of
the highest-grade ore shoot to the south and to depth at Beskauga.
With each new drill hole, we are improving our understanding of the
deposit geology and controls on mineralization. Bg21005 is an
exploration hole aimed at identifying the cause of a prominent
bulls-eye magnetic high, identified in our airborne magnetics
survey, west of the main deposit. We have now identified the
anomaly as a strongly potassic-altered monzodiorite intrusion.
Despite being weakly mineralized, there are several lines of
geochemical and structural evidence that support our favoured
hypothesis that the monzodiorite is not the causative intrusion for
the copper-gold mineralization at Beskauga Main. We believe that
the potassic core of the porphyry responsible for the
mineralization at Beskauga Main has yet to be found and is the
focus of our continued drill program. Nevertheless, the recognition
of a potentially separate mineralized intrusion revealed in Bg21005
may support the clustering of two or more porphyry centers and is a
reminder of how much more there is yet to discover at
Beskauga.”
A summary of the results announced in this news
release is outlined in the table below.
Table 1. Summary table for holes Bg21005
and Bg21006.Notes: Copper Equivalent (“CuEq”) grades
reported for the drill holes at Beskauga were calculated using the
following formula: CuEq % = Copper (%) + (Gold (g/t) x 0.8264) +
(Silver (g/t) x 0.0107) + (Molybdenum (ppm) x 3.3333). Gold
Equivalent (“AuEq”) grades reported for the drill holes at Beskauga
were calculated using the following formula: AuEq g/t = Gold (g/t)
+ (Copper (%) x 1.2100) + (Silver (g/t) x 0.0129) + (Molybdenum
(ppm) x 4.0334). Assumptions used for the copper and gold
equivalent calculations were metal prices of US$3.00/lb. Copper,
US$1,700/oz Gold, US$22/oz Silver, US$10/lb. Molybdenum, and
metallurgical recoveries were assumed to be 100%.
A photo accompanying this announcement is
available at
https://www.globenewswire.com/NewsRoom/AttachmentNg/0b49793e-bdd8-4d61-8d14-62a01f1d34d3
Drill Program In October 2021,
Arras announced the start of the initial phase of a permitted
30,000-meter diamond drill program targeting the extensions of the
Beskauga deposit both laterally and at depth (Figure 1). The drill
program is being conducted under the Option to Purchase Agreement
(“Option Agreement”) executed on January 26, 2021, with Copperbelt
AG (“Copperbelt”), a private mineral exploration company registered
in Zug, Switzerland.
In addition to testing the extents of the
Beskauga deposit, the drill program is also targeting a series of
previously undrilled targets in the wider area. These wider targets
are supported by both ground and recently flown airborne
geophysics, as well as in-situ geochemistry, derived using “KGK”
drilling (a drilling method akin to 'wet' reverse circulation
drilling, that recovers a 1 to 3 m core sample from the top of the
underlying bedrock which is used by Arras to efficiently map
lithology, alteration, and geochemistry across the property beneath
overburden).
For both the diamond and KGK drilling, Arras has
been using the local company “Tsentrgeolsemka LLP”. Arras has
recently changed drilling contractors to “GRK Iskander Ltd” and
mobilized a diamond drill rig with the capacity to drill deeper
holes, if required, as well as improved core orientation through
triple tube core barrel drilling. GRK Iskander Ltd is one of the
leading drilling companies in Kazakhstan, with clients including
Rio Tinto, Kazzinc (Glencore), ESAN, and Kazakhmys. Both
Tsentrgeolsemka LLP and GRK Iskander Ltd are both independent of
Arras.
Results of Bg21005 and Bg21006
Bg21005: (see Figure 1) was designed to test, for
the first time, an approximately 400 x 500 metre “bulls-eye”
circular magnetic high immediately west of the Beskauga deposit and
surrounded by a >500-meter zone of demagnetization. The hole was
collared outside Arras’ current Mineral Resource Estimate (see
Figure 1) and drilled at an angle of -70 o towards the south to a
final depth of 952.6 metres. The hole intersected a highly
magnetic, potassic altered intrusive body of monzodiorite that is
inferred to dip steeply towards the south. Alteration comprises
k-feldspar, secondary (“shreddy”) biotite, magnetite, Mg-rich
chlorite, and epidote, with minor argillic overprint comprising
phengitic illite and smectite localized around faults and fractures
(confirmed by Arras using TerraSpec SWIR/NIR spectroscopy).
Mineralization occurs as vein and fracture-controlled zones of
magnetite, chalcopyrite, pyrite, bornite, and molybdenite.
Generally, the intrusion is weakly mineralized but high tenor veins
up to 1.27 g/t Au, 1.62 % Cu and 27 g/t Ag do occur. Compared to
the diorite that hosts the bulk of the known mineralization at
Beskauga, the monzonite hosts significantly higher Mo grades, up to
2290 ppm Mo. Two minor dykes comprising weakly mineralized
potassic-altered xenolithic porphyritic diorite and fresh
post-mineral andesite were intersected at depths of 793.2 to 809.4
and 886.3 to 891.1 metres, respectively.
Whilst the monzodiorite discovered in Bg21005 is
strongly potassic-altered and hosts mineralization, there is
lithogeochemical and structural evidence supporting the
monzodiorite may not be the causative intrusion for the copper-gold
mineralization at Beskauga Main. Arras considers the potassic core
of the causative porphyry to be located at depth and has yet to be
intersected in drilling. Arras plans to test this hypothesis
through deep drilling in the coming months. Recognition of the
monzodiorite as a potentially separate mineralized intrusion
supports the clustering of two or more porphyry centers. In
addition to ongoing petrological and lithogeochemical studies,
Arras has submitted samples for Re-Os (molybdenite) and U-Pb
(zircon) geochronology at Durham University, UK, and the Mineral
Deposit Research Unit, University of British Columbia, Canada to
discriminate whether there is a distinguishable age difference
between the two mineralizing systems.
Bg21006: (see Figures 1 to 3)
was collared 250 metres west of Bg21002 (for results of Bg21002,
refer to Arras’ press release dated February 23, 2022), and drilled
at an angle of -70 o towards the NNW to a final depth of 732.2
metres. The hole confirmed the continuity of the exceptionally
high-grade mineralization observed in historical hole Bg-63 which
was re-assayed by Arras in 2021 (for further details, see Figures 2
and 3, as well as Arras’ press release dated October 7, 2021),
extending the ore shoot to the south and to depth. The
mineralization observed in hole Bg21006 is hosted within a diorite
with moderate, to very strong, argillic alteration comprising
illite and smectite (confirmed by Arras using TerraSpec SWIR/NIR
spectroscopy) inferred to have overprinted an earlier sodic
alteration, as reported by Arras in earlier holes. Mineralization
occurs as a mixture of disseminated, vein, and fracture-controlled
zones of chalcopyrite, tennantite, and pyrite with minor bornite
and covellite (see Figure 3). Zones of sheeted and/or intense
stockwork quartz-Cu sulfide veins correlate with the highest-grade
gold and copper assays up to 12.4 g/t Au and 3.39 % Cu,
respectively.
Two unmineralized post-mineral dykes comprising
argillic-altered xenolithic porphyritic diorite and fresh basalt
were intersected at depths of 334 to 348.9 and 469.8 to 493.1
metres, respectively. The dykes are enveloped by the highest-grade
intercepts, with assays up to 13.8 % CuEq or 16.70 g/t Au adjacent
to the dykes. These dykes are therefore interpreted to have filled
pre-existing E-W and NW-SE trending fault zones that earlier
controlled the copper-gold mineralization. When removing the grade
dilution resulting from the unmineralized dykes, it leaves a
residual intercept of 651.1 metres of mineralization grading 0.80 %
CuEq or 0.97 g/t AuEq within the mineralized diorite.
Figure 1. Location of the holes completed
to date as part of Arras’ planned 30,000-metre drill program on the
Beskauga Main deposit and wider area.
A photo accompanying this announcement is
available at
https://www.globenewswire.com/NewsRoom/AttachmentNg/877559c4-38bf-46fa-ab3c-91c3935e8037
Figure 2. Cross-section showing hole
Bg21006 in relation to several historical holes drilled by
Copperbelt. Also shown are grade contours based on the Beskauga
block model for copper (only) developed for the
purposes of the current Mineral Resource Estimate for Beskauga (for
further details, please see Arras’ press release on June 20, 2022).
CuEq grades of key intercepts in Bg21006 and historical holes are
shown. The cross-section demonstrates the steep, southwest dipping
high-grade copper-gold-silver trend observed through Arras’
exploration to date. This trend is observed beginning at the
paleo-bedrock surface (43 m in depth), to average between 200-300 m
wide and to be consistently mineralized down to at least 1000
metres.
A photo accompanying this announcement is
available at
https://www.globenewswire.com/NewsRoom/AttachmentNg/8c9e3fb5-353a-4a2e-b85b-5a7169301778
Figure 3. Cross-section showing hole
Bg21006 in relation to several historical holes drilled by
Copperbelt. Also shown are grade contours based on the Beskauga
block model for gold (only) developed for the
purposes of the current Mineral Resource Estimate for Beskauga (for
further details, please see Arras’ press release on June 20, 2022).
AuEq grades of key intercepts in Bg21006 and historical holes are
shown. The cross-section demonstrates the steep, southwest dipping
high-grade copper-gold-silver trend observed through Arras’
exploration to date. This trend is observed beginning at the
paleo-bedrock surface (43 m in depth), to average between 200-300 m
wide and to be consistently mineralized down to at least 1000
metres.
A photo accompanying this announcement is
available at
https://www.globenewswire.com/NewsRoom/AttachmentNg/02698d93-929d-4823-85df-818a342190f3
Figure 4. Photos of the diamond drill
core from Bg21006 showing the typical styles of veining,
mineralization and alteration observed throughout the
hole.
A photo accompanying this announcement is
available at
https://www.globenewswire.com/NewsRoom/AttachmentNg/d0a0a335-a7b6-43e0-9f40-ade431af0851
Figure 5. Diamond rig drilling hole
Bg21006 at Beskauga. The project benefits from flat topography and
ease of accessibility. Note the 1100 KVA power line in the distance
that passes through the project area.
A photo accompanying this announcement is
available at
https://www.globenewswire.com/NewsRoom/AttachmentNg/0510ab63-f415-49c2-b7de-5d8582143183
About the Beskauga Deposit: The
Beskauga deposit is a gold-copper-silver deposit with an
“Indicated” Mineral Resource of 111.2 million tonnes grading 0.49
g/t gold, 0.30% copper, and 1.3 g/t silver for 1.75 million ounces
of contained gold, 333.6 thousand tonnes of contained copper, and
4.79 million ounces of contained silver and an “Inferred” Mineral
Resource of 92.6 million tonnes grading 0.50 g/t gold, 0.24% copper
and 1.1 g/t silver for 1.49 million ounces of contained gold, 222.2
thousand tonnes of contained copper, and 3.39 million ounces of
contained silver. The constraining open pit was optimized and
calculated using a Gross Metal Value (“GMV”) cut-off of $20/tonne
based on a price of $1,750/oz for gold, $3.50/lb for copper, $22/oz
for silver, and with an average recovery of 85% for copper and
74.5% for gold and 50.0% for silver.
Based on exploration undertaken to date, the
Beskauga deposit is interpreted by Arras to represent a gold-rich
porphyry copper-gold deposit that has been overprinted by
high-sulfidation epithermal mineralization, either through
telescoping or due to clustering of multiple porphyry centers
within the Beskauga license that have superimposed alteration and
mineralization upon earlier phases. Beskauga is located within the
highly under-explored Bozshakol-Chingiz Volcanic Arc, which hosts
KAZ Minerals’ Bozshakol porphyry Cu-Au mine only 130 km west of
Beskauga. Bozshakol is one of the largest copper resources in
Kazakhstan with 1.123 billion tonnes at 0.35% Cu, 0.14 g/t Au and
1.0 g/t Ag in Measured and Indicated Resources. The mine has 30
Mtpa ore processing capacity and a remaining mine life of >40
years.
Contrary to many porphyry copper deposits being
developed in other jurisdictions globally, the Beskauga project,
located only 350 metres above sea-level, benefits from excellent
modern infrastructure and accessibility. The region is
mining-friendly and hosts several large-scale mining operations.
Arras’ operations are based out of the nearby mining town of
Ekibastuz, which services the largest coal mine in Kazakhstan and
provides a highly trained workforce for the Company to draw upon.
Paved road access, 1100 KVA power lines (see Figure 5), heavy rail,
and the Irtysh–Karaganda irrigation canal all lie within a
25-kilometer radius of the project. The capital city of Nur-Sultan,
located approximately 300 kilometres along a double lane highway to
the west of the project, has a major international airport allowing
for easy access and administration of the Beskauga project.
Assay and QAQC Procedures:
Diamond drill core was sampled in 1-metre intervals (except were
shortened by geological contacts) using a rock saw. Core diameter
is a mix of HQ and NQ depending on the depth of the drill hole.
Samples were cut and sampled at Arras’ operational base in the town
of Ekibastuz, Kazakhstan by Company personnel. All sample
preparation and geochemical analysis of the diamond drill core were
undertaken by ALS Global at its laboratories in Karaganda
(Kazakhstan) and Loughrea (Republic of Ireland), respectively. ALS
Global is an accredited laboratory that is entirely independent of
the Company.
After drying and fine crushing, a 250 g split
was pulverized to 85 % passing a -75-micron screen. A 30 g split of
the pulp was analyzed for gold using fire assay and Atomic
Absorption Spectroscopy (AAS) finish (ALS method: Au-AA25™) at ALS
Karaganda. A second pulp split was then air freighted to ALS
Loughrea and analyzed for 48 elements by Inductively Coupled Plasma
Mass Spectrometry (ICP-MS) after 4-acid digestion on a 0.25 g
aliquot (ALS method: ME-MS61™). Samples exceeding 1% copper were
re-analyzed using a 4-acid digest ICP-MS ore grade method (ALS
method: Cu-OG62™).
Arras Minerals operates according to its
rigorous internal Quality Assurance and Quality Control (QA/QC)
protocols, which are consistent with industry best practices. This
includes the insertion of certified standards, blanks, and field
duplicates comprising of quarter drill core at an insertion rate of
2.5%, 2.5%, and 5% respectively, which is deemed appropriate for
this stage of exploration. The blanks and standards are Certified
Reference Materials (CRM’s) supplied by Ore Research and
Exploration, Australia. Internal QA/QC samples were also inserted
by the analytical laboratories and reviewed by the Company prior to
release. No material QA/QC issues have been identified with respect
to sample collection, security, and assaying.
Qualified Person: The
scientific and technical disclosure for the Beskauga Project
included in this news release has been reviewed and approved by
Joshua Hughes, Vice President Exploration, and a full-time employee
of Arras Minerals Corp., who is also a Member and Chartered
Professional Geologist (MAusIMM CP(Geo)) of the Australasian
Institute of Mining and Metallurgy, a Fellow of the Society of
Economic Geologists (FSEG) and a Fellow of the Geological Society
of London (FGS). Mr. Hughes has sufficient experience, relevant to
the styles of mineralization and type of deposits under
consideration and to the activity that he is undertaking, to
qualify as a Qualified Person (“QP”) for the purposes of National
Instrument 43-101 Standards of Disclosure of Mineral Projects (“NI
43-101”).
On behalf of the Board of Directors "Tim Barry"
Tim Barry, MAusIMM (CP(Geo))Chief Executive
Officer and Director
INVESTOR RELATIONS: +1 604 687 5800
info@arrasminerals.com
Further information can be found on the
Company’s website https://www.arrasminerals.com or follow us on
LinkedIn: https://www.linkedin.com/company/arrasminerals
About Arras Minerals Corp.
Arras is a Canadian exploration and development
company advancing a portfolio of copper and gold assets in
northeastern Kazakhstan, including the Option Agreement on the
Beskauga copper and gold project. The company’s shares are listed
on the TSX-V under the trading symbol “ARK”.
Cautionary Note to U.S. Investors
concerning estimates of Measured, Indicated, and Inferred
Resources: This press release uses the terms “measured
resources”, “indicated resources”, and “inferred resources” which
are defined in, and required to be disclosed by, NI 43-101. The
Company advises U.S. investors that these terms are not recognized
by the SEC. The estimation of measured, indicated and inferred
resources involves greater uncertainty as to their existence and
economic feasibility than the estimation of proven and probable
reserves. U.S. investors are cautioned not to assume that measured
and indicated mineral resources will be converted into reserves.
The estimation of inferred resources involves far greater
uncertainty as to their existence and economic viability than the
estimation of other categories of resources. U.S. investors are
cautioned not to assume that estimates of inferred mineral
resources exist, are economically minable, or will be upgraded into
measured or indicated mineral resources. Under Canadian securities
laws, estimates of inferred mineral resources may not form the
basis of feasibility or other economic studies.
Disclosure of “contained ounces” in a resource
is permitted disclosure under Canadian regulations, however the SEC
normally only permits issuers to report mineralization that does
not constitute “reserves” by SEC standards as in place tonnage and
grade without reference to unit measures. Accordingly, the
information contained in this press release may not be comparable
to similar information made public by U.S. companies that are not
subject NI 43-101.
Cautionary note regarding
forward-looking statements: This news release contains
forward-looking statements regarding future events and Arras’
future results that are subject to the safe harbors created under
the U.S. Private Securities Litigation Reform Act of 1995, the
Securities Act of 1933, as amended, and the Exchange Act, and
applicable Canadian securities laws. Forward-looking statements
include, among others, statements regarding the use of net proceeds
from the recent private placement, plans and expectations of the
drill program Arras is in the process of undertaking, including the
expansion of the Mineral Resource, and other aspects of the Mineral
Resource estimates for the Beskauga project. These statements are
based on current expectations, estimates, forecasts, and
projections about Arras’ exploration projects, the industry in
which Arras operates and the beliefs and assumptions of Arras’
management. Words such as “expects,” “anticipates,” “targets,”
“goals,” “projects,” “intends,” “plans,” “believes,” “seeks,”
“estimates,” “continues,” “may,” variations of such words, and
similar expressions and references to future periods, are intended
to identify such forward-looking statements. Forward-looking
statements are subject to a number of assumptions, risks and
uncertainties, many of which are beyond management’s control,
including undertaking further exploration activities, the results
of such exploration activities and that such results support
continued exploration activities, unexpected variations in ore
grade, types and metallurgy, volatility and level of commodity
prices, the availability of sufficient future financing, and other
matters discussed under the caption “Risk Factors” in the
Non-Offering Prospectus filed on the Company’s profile on SEDAR on
May 31, 2022 and in the Company’s Annual Report on Form 20-F for
the fiscal year ended October 31, 2021 filed with the U.S.
Securities and Exchange Commission filed on February 17, 2022
available on www.sec.gov. Readers are cautioned that
forward-looking statements are not guarantees of future performance
and that actual results or developments may differ materially from
those expressed or implied in the forward-looking statements. Any
forward-looking statement made by the Company in this release is
based only on information currently available and speaks only as of
the date on which it is made. The Company undertakes no obligation
to publicly update any forward-looking statement, whether written
or oral, that may be made from time to time, whether as a result of
new information, future developments, or otherwise.
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