NexMetals Metallurgical Assay Results Confirm Clean Copper & Nickel-Cobalt Concentrates from Selebi Mines
NexMetals Metallurgical Assay Results
Confirm Clean Copper & Nickel-Cobalt
Concentrates from Selebi Mines
Vancouver, British Columbia--(Newsfile Corp. - October 22, 2025) -
NexMetals Mining Corp. (TSXV:
NEXM) (NASDAQ: NEXM)
(the "
Company
" or "
NEXM
") is pleased to announce that final concentrate
assay results from its bulk sample-based metallurgical test program (
see news release dated
September 3, 2025
) at the past-producing
Selebi Mines
in Botswana have confirmed the potential to
produce
clean, high-grade, saleable copper and nickel-cobalt concentrates
.
Clean Concentrates Confirmed
Commercial Specifications:
Assays confirm both concentrates potentially meet
industry-
standard smelter acceptance criteria
, establishing a potential pathway to commercial sales.
Clean Concentrate:
Both the copper and nickel concentrates show very low levels of deleterious
elements, including magnesium, cadmium, mercury, fluorine, lead, silica, and arsenic, all are below
industry-standard penalty thresholds.
This
clean profile is highly compelling and could
enhance marketability and offtake terms.
Low-Capital Restart Pathway:
Validates the option for the Company to
restart operations
without the need for an on-site smelter or hydrometallurgical plant
, reducing capital intensity
and execution risk.
Next Steps
Based on findings from mineralogical studies, investigate opportunity to reduce nickel losses of
liberated nickel sulphide fines in nickel rougher tails by minimizing overgrinding and fines
generation.
Variability testing on additional Selebi samples.
Use results to optimize the flowsheet and mining sequence to drive higher overall recoveries.
Morgan Lekstrom, CEO of the Company, commented:
"These results confirm the success of our
flowsheet process testing which demonstrated our ability to produce two separate, high-grade saleable
copper and nickel concentrates. The final assays now show that both concentrates are
very clean
,
containing
low levels of deleterious elements
and potentially meet
commercial smelter
specifications
.
Another exciting step in our accelerated work program, this further de-risks
the
project
and enhances the marketability of Selebi's concentrates."
Technical Details
The geochemical analyses were carried out by Activation Laboratories Ltd. ("
Actlabs
"), Ancaster,
Ontario, Canada, to provide quality assessment of the Copper and Nickel concentrates produced from
Selebi Locked Cycle Test 1 carried out at Blue Coast Research labs (see news release dated
September 3, 2025).
For brevity, only the analyses of potentially payable metals and deleterious
elements are given in Table 1. Deleterious elements that can attract penalties in copper concentrate
include arsenic, antimony, bismuth, lead, zinc, mercury, fluorine/chlorine, cadmium, selenium, tellurium,
silica (SiO
2
), alumina (AL
2
O
3
), and magnesia (MgO). Deleterious elements in nickel concentrate include
arsenic, antimony, bismuth, lead, mercury, zinc, chlorine/fluorine, phosphorous, magnesium, aluminum,
silica, and carbon.
For both the copper and nickel concentrates, all deleterious elements are well below the
industry standard smelter penalty threshold.
Table 1.
Lock Cycle Test -1 Copper and Nickel Concentrate Quality Assessment
Analyte
Analytical Method
Unit
Copper Concentrate
Nickel Concentrate
Potentially Payable Metals
Ni
4AD-ICP
%
0.744
10.593
Cu
4AD-ICP
%
27.772
2.491
Co
4AD-ICP
%
0.023
0.546
Ag
4AD-ICP
g/t
47.5
20.2
Au
FA-ICP
g/t
0.75
0.27
Pd
FA-ICP
g/t
0.57
0.64
Pt
FA-ICP
g/t
0.36
0.84
Other Elements
As
4AD-ICP
ppm
4
2
Al
2
O
3
FUS-XRF/FUS-ICP
%
0.71
0.23
Sb
4AD-ICP
ppm
51
20
Bi
4AD-ICP
ppm
10
34
Cd
4AD-ICP
ppm
33.9
9.7
Cl
INAA
%
0.01
< 0.01
C
tot
Eltra
%
0.26
0.05
F
FUS-ISE
%
< 0.01
< 0.01
Fe
4AD-ICP
%
36.21
50.15
Pb
4AD-ICP
ppm
44
29
MgO
FUS-XRF
%
0.26
< 0.01
Hg
1G
ppb
19
11
Mo
4AD-ICP
ppm
<1
3
Se
4AD-ICP
ppm
25
<10
SiO
2
FUS-XRF/FUS-ICP
%
0.04
0.57
Al
2
O
3
FUS-XRF/FUS-ICP
%
0.71
0.23
S
tot
Eltra
%
34.88
35.73
Te
4AD-ICP
ppm
58
48
Zn
4AD-ICP
ppm
670
358
Quality Control
Analyses were performed at Blue Coast Research ("
BCR
") in Parksville, British Columbia and Actlabs.
BCR used a four acid digestion analyzed by ICP-OES (4AD-ICP) and Combustion-IR by Eltra for Sulfur
(S(tot)-ELTRA).
Actlabs carried out the remaining analyses using Hg-Cold Vapour AA, Whole rock
Analysis-XRF, Short Lived (INAA), Fusion Specific Ion Electrode-ISE and Major Elements Fusion (ICP-
OES).
Actlabs is an independent laboratory and accredited by the Standards Council of Canada to the ISO/IEC
17025 standard.
Qualified Persons
All scientific and technical information in this news release has been reviewed and approved by Norman
Lotter, P.Eng., Pr.Eng., C.Eng., FSAIMM, FIMM, Consulting Engineer, and by Sharon Taylor, MSc.,
P.Geo., Vice President Exploration of the Company, each of whom are "qualified persons" for the
purposes of NI 43-101 and Subpart 1300 of Regulation S-K.
Technical Report
The mineral resource estimate on the Selebi Mine is supported by the technical report entitled
"Technical Report, Selebi Mines, Central District, Republic of Botswana" and dated September 20,
2024 (with an effective date of June 30, 2024) (the "
Selebi Technical Report
"), and prepared by SLR
Consulting (Canada) Ltd. for NEXM. Reference should be made to the full text of the Selebi Technical
Report, which was prepared in accordance with NI 43-101 and is available on SEDAR+
(
www.sedarplus.ca
) and "S-K 1300 Technical Report Summary Selebi Mines, Central District, Republic
of Botswana" and dated December 17, 2024, filed in accordance with Subpart 1300 of Regulation S-K
on EDGAR (
www.sec.gov
), and in each case under NEXM's issuer profile.
About NexMetals Mining Corp.
NexMetals Mining Corp. is a mineral exploration and development company that is focused on the
redevelopment of the previously producing copper, nickel and cobalt resources mines owned by the
Company in the Republic of Botswana.
NexMetals is committed to governance through transparent accountability and open communication
within our team and our stakeholders. NexMetals' team brings extensive experience across the full
spectrum of mine discovery and development. Collectively, the team has contributed to dozens of
projects, including work on the Company's Selebi and Selkirk mines. Senior team members each have
on average, more than 20 years of experience spanning geology, engineering, operations, and project
development.
For further information about NexMetals Mining Corp., please contact:
Morgan Lekstrom
CEO and Director
Jaclyn Ruptash
V.P., Communications and Investor Relations
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Neither the TSX Venture Exchange and its Regulation Services Provider (as that term is defined
in the policies of the TSX Venture Exchange) nor the Nasdaq Stock Market LLC accepts
responsibility for the adequacy or accuracy of this news release. No stock exchange, securities
commission or other regulatory authority has approved or disapproved the information
contained herein.
Cautionary Note Regarding Forward-Looking Statements
This news release contains "forward-looking statements" within the meaning of the United States
federal securities laws and "forward-looking information" within the meaning of applicable Canadian
securities legislation (collectively, "forward-looking information") based on expectations, estimates
and projections as at the date of this news release. Forward-looking information involves risks,
uncertainties and other factors that could cause actual events, results, performance, prospects and
opportunities to differ materially from those expressed or implied by such forward-looking information.
For the purposes of this release, forward-looking information includes, but is not limited to: the
expectation that the Selebi Mines have the potential to produce clean, high-grade, saleable copper
and nickel-cobalt concentrates, and the potential commercial sale of such concentrates; the
expectation that the Company will not be required to build a smelter or hydrometallurgical facility on
the Selebi Mines to restart operations; the expectation that the proposed flow sheet design in respect
of the Selebi Mines will result in lower energy requirements and a reduced environmental footprint; the
Company's anticipation of a faster and more efficient potential restart of the Selebi Mines; anticipated
flexibility in future potential offtake negotiations; the implementation of the objectives, goals and future
plans of the Company including the proposed advancement of the Selebi Mines as currently
contemplated, including variability testing on additional Selebi samples and flowsheet optimization;
the expectation that exploration activities will accurately predict mineralization; the Company's
expectation that the mineral resource estimate may be materially improved; the expectation that the
Company will implement its drilling, geoscience and metallurgical work on its properties and work
plans generally; management's belief that the historical resource could be indicative of the presence
of mineralization on the deposits; and the anticipated benefits of the Company's approach to the
resource development plan. These forward-looking statements, by their nature, require the Company
to make certain assumptions and necessarily involve known and unknown risks and uncertainties that
could cause actual results to differ materially from those expressed or implied in these forward-looking
statements. Factors that could cause actual results to differ materially from such forward-looking
information include, but are not limited to, the Selebi Mines may not restart or re-enter production on
the timing anticipated or at all; risks related to the potential commercial sale of concentrates or that
such sales do not occur on the timing anticipated or at all; capital and operating costs varying
significantly from estimates; the derisking and reduced capex and energy requirements of the Selebi
Mines may not be as anticipated; the Company may not enter into future offtake agreements; the
ability of exploration and metallurgical results to predict mineralization, prefeasibility or the feasibility
of mine production; the risk that future assay results will not be as anticipated or received when
anticipated; delays in obtaining or failures to obtain required governmental, environmental or other
project approvals; uncertainties relating to the availability and costs of financing needed in the future;
changes in equity markets; inflation; fluctuations in commodity prices; delays in the development of
projects; the other risks involved in the mineral exploration and development industry; and those risks
set out in the Company's filings with the U.S. Securities and Exchange Commission on EDGAR
(
www.sec.gov
) and public disclosure record on SEDAR+ (
www.sedarplus.com
), in each case, under
NEXM's issuer profile. Although the Company believes that the assumptions and factors used in
preparing the forward-looking information in this news release are reasonable, undue reliance should
not be placed on such information, which only applies as of the date of this news release, and no
assurance can be given that such events will occur in the disclosed time frames or at all. The
Company disclaims any intention or obligation to update or revise any forward-looking information,
whether as a result of new information, future events or otherwise, other than as required by law.
To view the source version of this press release, please visit
https://www.newsfilecorp.com/release/271407