800 Square Victoria, #3500
800 Square Victoria, #3500
Montreal, Québec, H4Z 1E3
Tel: (514) 591-3988
NEWS RELEASE
September 8th, 2025 TRADING SYMBOL: TSX-V: OOR
OPUS ONE GOLD CORP NOYELL GOLD PROJECT, ZONE 1 DISCOVERY,
COMPANY UPDATE
NOT FOR DISTRIBUTION TO U.S NEWSWIRE SERVICES OR FOR
DISSEMINATION IN THE UNITED STATES
Montreal, September 8th, 2025, Opus One Gold Corp (TSX-V: OOR) (the “Company”
or “Opus One ”) is pleased to present a technical update after a successful drilling
program carried out at the beginning of winter 2025 on its 100% owned Noyell gold
project, south of Matagami in Abitibi, Quebec.
All assay results have been received, compiled and published in previous press releases.
Opus One wishes now to present its new interpretation for the gold mineralization on its
Zone 1 Discovery (see attached longitudinal section). The longitudinal section is looking
north. It strikes at N110° and it dips steeply to the south (66°S). At the 300 m level, Zone
1 extends for approximately 600 m in the east -west direction. Zone 1 appears to reach
surface, under the overburden, and it has been followed down to the 500 m level where
it remains open (see attached cross section). True thickness of Zone 1 is variable, but it
reaches 15m in its upper portion (NO-25-07). Hole NO -25-13, the deepest high-grade
interval of Zone 1 exhibits a true thickness of over 5m which represents the approximate
average width of the zone.
The mineralization within Zone 1 consists of a stockwork of quartz, iron carbonates and
semi-massive sulphides (mostly pyrrhotite, with minor pyrite and arsenopyrite) hosted by
fine sediments of the Taïbi Formation along the Casa- Berardi-Douay-Cameron
deformation corridor (CBDC). Zone 1 is often, but not always, spatially associated with a
narrow band of oxide Iron formation (BIF).
A preliminary geological interpretation indicates that Zone 1 might represent a
sulphidization of the BIF in a zone of tension along the deformation corridor. The CBDC
deformation corridor, which strikes nearly east -west to the west of Zone1, appears to
bend slightly to the south near Zone 1 creating a zone of tension which was filled by the
stockwork. The gold bearing fluids introduced a lot of quartz, theoretically transformed
the magnetite (BIF) into iron sulphides and created a strong and pervasive alteration halo
consisting mostly of chamosite, sericite and iron carbonates. Highest gold grade s
coincide with the highest sulphide content. Some visible gold was observed within the
quartz also. No shearing is associated with Zone 1.
Latest drilling by Opus One (9,000 m during the winter months of 2025) indicates that the
gold mineralization within the Zone 1 Discovery is open to the east, at least near surface
(DDH NO -25-18), it is open at depth along a high grade steeply dipping shoot in its
eastern portion (DDH NO-25-13), it appears to be open at depth in the center of the zone
along a lower grade shoot (NO -25-15a) and it appears open along three vectors toward
the west, at depth (NO-25-15a, NO-25-17 and Soquem’s historical hole 1311-97-24).
Opus One is currently carrying digitization and spectrometric studies on core samples
from the latest drilling program to better characterize the gold mineralization of Zone 1 .
Our goal is to identify with certainty where the gold occurs within the stockwork and what
are its main mineralogical associations. This work should provide vital information on the
potential for gold recovery for this type of mineralization.
Opus One is currently finalizing the compilation of data from its 2025 bio-chemical survey
carried out directly to the west and south- west of Zone 1. Results should be made
available soon.
Opus One is already gearing up for the upcoming drilling season. Numerous drilling
targets have been identified to infill and to extend Zone 1 in all directions and to test new
areas in the west ern portion of the property where significant gold was reported in drill
records in the 80’s and 90’s by previous operators . The permitting process has been
initiated, and three drill rigs have been secured for the winter months, early in 2026.
ZONE 1 DISCOVERY – LONGITUDINAL SECTION
2025 WINTER FINAL DRILLING RESULTS
Louis Morin, Opus One CEO commented: The 2025 drilling program on its Noyell project
Drill Hole Zone From To Length True width Au g/t
NO-25-01 Zone 1 135 142,3 7,3 5,8 4,12
NO-25-01 Zone 2 206,5 207 0,5 0,41 4,71
NO-25-02 Zone 1 174,3 174,8 0,5 0,47 1,06
NO-25-02 Zone 2 184,3 187 2,7 2,52 0,21
NO-25-03 Zone 1 57,2 63,9 6,7 5,26 3,79
NO-25-03 Zone 2 123,2 124,2 1 0,8 1,32
NO-25-04 Zone 1 297,8 298,8 1 0,72 2,47
NO-25-04 Zone 2 354,6 355,1 0,5 0,37 1,01
NO-25-05 Zone 1 605,7 606,7 1 0,8 1,14
NO-25-05 Zone 2 628 628,9 0,9 0,8 0,17
NO-25-06 Zone 1 232,2 240,6 8,4 6,6 5,57
NO-25-06 Zone 2 289,2 291 1,8 1,46 0,52
NO-25-07 Zone 1 95,75 114,7 18,95 15,16 4,22
NO-25-07 Zone 2 159 161,7 2,7 2,2 3,67
NO-25-08A Zone 1 523,9 527,8 3,9 3,25 2,34
NO-25-08A Zone 2 581,8 582,8 1 0,85 0,04
NO-25-09 Zone 1 80,8 86,8 6 5,16 2,32
NO-25-09 Zone 2 115,9 117,1 1,2 1,04 6,63
NO-25-10A Zone 1 160,3 162,5 2,2 1,54 1,54
NO-25-10A Zone 3 175,2 178,4 3,2 2,29 2,63
NO-25-10A Zone 2 203 210,3 7,3 5,42 1,99
NO-25-11 Zone 1 111,8 113,6 1,8 1,53 1,56
NO-25-11 Zone 2 161,7 165,8 4,1 3,54 2,23
NO-25-12 Zone 1 188,1 194,7 6,6 5,34 2,24
NO-25-12 Zone 2 250,5 251,2 0,7 0,59 0,04
NO-25-13 Zone 1 572,8 579,9 7,1 5,34 4,10
NO-25-13 Zone 2 647,7 648,6 0,9 0,7 0,98
NO-25-14 Zone 1 165 170,2 5,2 4,16 8,96
NO-25-14 Zone 1 179,2 189,1 9,9 7,96 2,91
NO-25-14 Zone 2 221,2 226,8 5,6 4,6 1,02
NO-25-15A Zone 1 536 539 3 2,34 1,73
NO-25-15A Zone 2
NO-25-16 Zone 1 511 513 2 1,61 1,36
NO-25-16 Zone 2 542,8 543,9 1,1 0,9 0,06
NO-25-17 Zone 1 411,5 416,7 5,2 4,16 3,92
NO-25-17 Zone 2 471 473,2 2,2 1,82 3,30
NO-25-18 Zone 1 66,3 71,8 5,5 5,08 3,24
NO-25-18 Zone 2 123,1 126,5 3,4 3,18 0,28
NO-25-19 Zone 1 375,4 376,1 0,7 0,61 2,06
NO-25-19 Zone 2 422,6 424,3 1,7 1,5 1,33
NO-25-20 Zone 1 524,2 527,7 3,5 2,79 0,07
NO-25-20 Zone 2 586,2 587,2 1 0,83 0,41
NO-25-21 Zone 1 474,8 486,7 11,9 10,58 1,98
NO-25-21 Zone 2 529 532,7 3,7 3,36 1,54
NO-25-22 Zone 1 308,1 309 0,9 0,65 0,30
NO-25-22 Zone 2 364,5 365,2 0,7 0,52 0,12
has been a real success for Opus One. The gold mineralization of Zone 1 has significantly
increased and remains potentially open in many directions and along several vectors. We
are very optimistic about the forthcoming drilling program on Zone 1 and on the western
portion of the property where Opus One never ventured before. With the mobilization of
three drill rigs in January 2026, definition drilling of Zone 1 should accelerate significantly.
We will go wider, and we will go deeper than ever. The excitement continues.
Sample preparation, analysis and QAQC program
All core recovered is NQ size. All samples are described, labelled, cut (diamond saw)
and bagged at Technominex’ facilities in Rouyn -Noranda. Samples are then shipped to
AGAT certified Laboratory in Val D’or for preparation. Sample pulps are then shipped to
various AGAT laboratories in Canada for analysis. Samples are assayed for gold using
by Fire Assay (50g), with ICP-OES Finish. All samples equal or above 10 g/t Au are
submitted to ore grade gravimetric finish.
Opus One’s QAQC program consists of one control sample inserted, at Technominex’
facility, after 9 regular samples. Control samples consist of a certified blank and various
gold grades certified material.
OPUS ONE Gold Corp.
Opus One Gold Corp. is a mining exploration company focused on discovering high
quality gold and base metals deposits within s trategically located properties in
proven mining camps, close to ex isting mines in the Abitibi Greenstone Belt,
north-western Quebec and north-e astern Ontario - one of the most pr olific gold mining
areas in the world. Opus One holds assets in the V al-d'Or and Matagami mineral
districts.
An independent qualified person, Pierre O’Dowd P .Geo, has verified and approv ed
the data disclosed, including sampling, analytical, and test data underlying the
information or opinions contained in the written disclosure as required by section 3.1
and 3.2 of NI43-101.
Forward-Looking Statements
This news release contains statements that may constitute “forward-looking information”
within the meaning of applicable Canadian securities legislation. Forward- looking
information may include, among others, statements regarding the future plans, costs,
objectives or performance of Opus One, or the assumptions underlying any of the
foregoing. In this news release, words such as “may”, “would”, “could”, “will”, “likely”,
“believe”, “expect”, “anticipate”, “intend”, “plan”, “estimate” and similar words and t he
negative form thereof are used to identify forward- looking statements. Forward- looking
statements should not be read as guarantees of future performance or results, and will
not necessarily be accurate indications of whether, or the times at or by which, such future
performance will be achieved. No assurance can be given that any events anticipated by
the forward- looking information will transpire or occur, including the anticipated
exploration program on the project, the results of such exploration program, the
development of the project and what benefits Opus One will derive from the project, the
expected demand for lithium. Forward- looking information is based on information
available at the time and/or management’s good-faith belief with respect to future events
and are subject to known or unknown risks, uncertainties, assumptions, and other
unpredictable factors, many of which are beyond Opus One’ control.
These risks, uncertainties and assumptions include, but are not limited to, those
described under “Financial Instruments” and “Risk and Uncertainties in Opus One’
Annual Report for the fiscal year ended August 31st, 2024, a copy of which is available on
SEDAR at www.sedar.com and could cause actual events or results to differ materially
from those projected in any forward-l ooking statements. Opus One does not intend,
nor does Opus One undertake any obligation, to update or revise any forward-
looking information contained in this news release to reflect subsequent information,
events or circumstances or otherwise, except if required by applicable laws.
Neither the TSX Venture Exchange nor its Regulation Services Provider (as that term is defined
in the policies of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy
of the release.
For more information, please contact:
Louis Morin
Chief Executive Officer & Director
Tel.: (514) 591-3988
Michael W. Kinley, CPA, CA
President, Chief Financial Officer & Director
Tel: (902) 826-1579
Visit Opus One’s website: www.OpusOneGold.com