Decade Resources Reports First Assays from the North Mitchell Property Indicate High Gold and Silver

Rhea-AI Summary

Decade Resources (symbol DECXF) reported first certified surface assay results from the North Mitchell Property on October 14, 2025, in British Columbia's Golden Triangle.

Key surface grab assays returned 45.0 g/t Au & 60.4 g/t Ag, 11.6 g/t Au & 53.92 g/t Ag, and 1.05 g/t Au & 4.23 g/t Ag. Samples were collected from quartz stockwork with visible sulfides; assays were processed at MSA Labs (ISO 17025/9001).

Decade notes results are selective and random, recommends further mapping and expanded sampling, and anticipates a maiden drill program in the 2026 season subject to permitting and financing.

Positive

• Surface grab assays up to 45.0 g/t Au
• High silver values to 60.4 g/t Ag
• Quartz stockwork with visible sulfides reported
• Property contiguous to KSM, Snowfield, Treaty Creek, Brucejack

Negative

• Sampling is selective and random; may not reflect true grade
• Assaying was rushed to support ongoing exploration
• Maiden drill program only anticipated in 2026, subject to permitting and financing

Stewart, British Columbia--(Newsfile Corp. - October 14, 2025) - Decade Resources Ltd. (TSXV: DEC) ("Decade" or the "Company") is pleased to announce the first certified assay results from surface sampling on the North Mitchell Property, located in the Golden Triangle region of northwestern British Columbia. The Property is contiguous to Seabridge Gold's KSM and Snowfield deposits and Newmont's Brucejack Mine, placing it at the epicenter of one of the world's largest concentrations of gold and copper resources.

Highlights of Initial Assays From Random Grab Samples on In-situ Quartz Stockwork on the Property.

• 45.0 g/t Au and 60.4 g/t Ag.
• 11.6 g/t Au and 53.92 g/t Ag.
• 1.05 g/t Au and 4.23 g/t Ag.

Note: The samples above were random in nature but do not necessarily represent the metal content in the located source. The Company feels that the high metal content is highly encouraging and further investigation is warranted.

Nearby Major Deposits (NI 43-101 Compliant Resources)

"The QP has been unable to verify the following information, and that the information is not necessarily indicative to the mineralization on the property that is the subject of the disclosure. It is being used for reference purposes."

Deposit	Category	Tonnes (Mt)	Grade	Contained Metal
Mitchell (Seabridge - KSM)	M&I	2,359	0.54 g/t Au, 0.15% Cu	41.1 Moz Au, 7.99 Blb Cu
	Inferred	1,283	0.29 g/t Au, 0.14% Cu	11.8 Moz Au, 3.83 Blb Cu
Iron Cap (Seabridge - KSM)	M&I	471	0.38 g/t Au, 0.21% Cu	5.8 Moz Au, 2.21 Blb Cu
	Inferred	2,309	0.41 g/t Au, 0.27% Cu	30.3 Moz Au, 13.8 Blb Cu
Kerr (Seabridge - KSM)	M&I	384	0.22 g/t Au, 0.41% Cu	2.7 Moz Au, 3.46 Blb Cu
	Inferred	2,589	0.27 g/t Au, 0.35% Cu	22.8 Moz Au, 19.9 Blb Cu
Sulphurets (Seabridge - KSM)	M&I	446	0.55 g/t Au, 0.21% Cu	7.9 Moz Au, 2.06 Blb Cu
	Inferred	223	0.44 g/t Au, 0.13% Cu	3.2 Moz Au, 0.64 Blb Cu
East Mitchell / Snowfield (Seabridge)	M&I	1,759	0.55 g/t Au, 0.10% Cu	31.2 Moz Au, 3.90 Blb Cu
	Inferred	281	0.37 g/t Au, 0.07% Cu	3.4 Moz Au, 0.40 Blb Cu
Treaty Creek (Tudor Gold, 2024)	M&I	730.20	1.19 g/t AuEq	27.87 Moz AuEq (21.66 Moz Au + 128.73 Moz Ag + 2.87 Blb Cu)
	Inferred	149.61	1.25 g/t AuEq	6.03 Moz AuEq (4.88 Moz Au + 28.97 Moz Ag + 503.23 Mlb Cu)
Brucejack (Newmont)	M&I	22.3	7.7 g/t Au, 9.5 g/t Ag	5.7 Moz Au, 6.9 Moz Ag
	Inferred	5.0	6.7 g/t Au, 10.0 g/t Ag	1.1 Moz Au, 1.6 Moz Ag

 

Brucejack is recognized as one of the highest-grade producing gold mines globally, with historical production already exceeding 1.5 Moz Au since startup, demonstrating a much larger gold endowment than is captured in compliant reserves and resources.

Management Commentary

Ed Kruchkowski, President of Decade Resources, stated:

"We are thrilled with the initial high-grade assay results, including gold assays, from the North Mitchell Property. The combination of quartz stockwork with visible sulfides and the presence of chalcocite-bornite float samples containing copper underscores the potential for both Treaty Creek/Iron Cap porphyry Cu-Au and high-grade Brucejack-style epithermal gold systems. The proximity to world-class deposits such as KSM, Snowfield, Treaty Creek, and Brucejack highlights the strategic importance of this property."

Figure 1. Location of the North Mitchell Property in relation to nearby world-class deposits including KSM, Iron Cap, Snowfield, Sulphurets, Treaty Creek, and Brucejack.

To view an enhanced version of this graphic, please visit:
https://images.newsfilecorp.com/files/3615/270397_b7ef7e77c4bd8863_001full.jpg

Table 1: Results for Rush Assays

Assay Number	Location	Type	Gold g/t	Silver g/t	Zinc %
NM267	427168E 6267078N	Outcrop Grab	11.6	53.92	0.48
NM267A	427168E 6267080N	Outcrop Grab	45.0	60.4	2.1
NMT	427160E 6267075N	Outcrop Grab	1.05	4.23	0.038

 

The samples were collected several meters apart on BC mining claim 1114641 within an exposure of white quartz veins carrying sparse galena in a matrix of silicified grey rock. The matrix carries very fine grained pyrite with strong sericite alteration. Sampling was random and assaying was rushed to aid in ongoing exploration.

Next Steps

• Complete detailed mapping and sampling program over key structural zones.
• Expand surface sampling grid and prioritize drill target definition.
• Anticipate maiden drill program commencing in the 2026 season, subject to permitting and financing.

Cautionary Statement

Sampling results reported herein are selective in nature and may not represent the true grade or extent of mineralization on the Property. Comparisons to adjacent deposits are provided for geological context only and may not indicate that similar mineralization occurs on the North Mitchell Property. Mineral resources which are not mineral reserves do not have demonstrated economic viability. Inferred resources are considered too speculative geologically to have economic considerations applied to them that would enable them to be categorized as mineral reserves.

All samples were prepared at MSA Labs' preparation laboratory in Terrace, B.C., and assayed at MSA Labs' geochemical laboratory in Langley, B.C. Gold was assayed using a fire assay with atomic absorption (AA) spectrometry finish. Samples over 25 parts per million gold were fire assayed with gravimetric finish. All samples were analyzed by four-acid digestion with multielement ICP-MS, with silver and base metal overlimits being reanalyzed by emission spectrometry. MSA Labs' quality system complies with the requirements for the international standards ISO 17025 and ISO 9001. MSA Labs is independent of the company.

Qualified Person

Ed Kruchkowski, P.Geo., President of Decade Resources Ltd., is the Qualified Person as defined by National Instrument 43-101 and has reviewed and approved the technical contents of this news release.

About Decade Resources Ltd.

Decade Resources Ltd. is a Canadian based mineral exploration company actively seeking opportunities in the resource sector. Decade holds numerous properties at various stages of development and exploration from basic grass roots to advanced ones. Its properties and projects are all located in the "Golden Triangle" area of northern British Columbia. For a complete listing of the Company assets and developments, visit the Company website at www.decaderesources.ca. For investor information please call 250- 636-2264 or Gary Assaly at 604-377-7969.

Forward-Looking Statements

This release includes certain statements that may be deemed "forward-looking statements". All statements in this release, other than statements of historical facts, that address events or developments that the Company expects to occur are forward-looking statements. Forward-looking statements are subject to a variety of risks and uncertainties that could cause actual events or results to differ materially from those reflected in the forward-looking statements.

"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 this release."

"This news release may contain forward-looking statements. Forward-looking statements address future events and conditions and therefore involve inherent risks and uncertainties. Actual results may differ materially from those currently anticipated in such statements."

References

Seabridge Gold Inc. KSM Project reserves and resources (Sept 2025 Investor Presentation):
https://ucarecdn.com/6278768d-92be-4086-86db-647c1a60ccb1/202509SeabridgeInvestorPresentationFINALupdatedsep23.pdf

Canadian Mining Journal - Seabridge Kerr/Iron Cap update (Sept 2025):
https://www.canadianminingjournal.com/news/seabridge-updates-kerr-iron-cap-inferred-resources-with-another-5-9-million-oz-gold-and-3-3-lb-copper/

Seabridge Gold - Fact Sheet Sept 2025:
https://ucarecdn.com/bf3bae04-d6aa-4bae-8838-92c4789ddfb1/202509SeabridgeFactSheet.pdf

Seabridge Gold - Snowfield acquisition news (2020):
https://www.juniorminingnetwork.com/junior-miner-news/press-releases/933-tsx/sea/89778-seabridge-completes-acquisition-of-snowfield-property-from-pretivm.html

Tudor Gold Corp. Treaty Creek Project resources (2024):
https://tudor-gold.com/projects/treaty-creek/

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 this release.

To view the source version of this press release, please visit https://www.newsfilecorp.com/release/270397

FAQ

What assay results did Decade Resources (DECXF) report from North Mitchell on October 14, 2025?

Initial grab assays returned 45.0 g/t Au & 60.4 g/t Ag, 11.6 g/t Au & 53.92 g/t Ag, and 1.05 g/t Au & 4.23 g/t Ag.

Are the North Mitchell assay results from Decade (DECXF) representative of the property grade?

No; the company cautioned results are selective and random and may not represent true grade or extent.

What are Decade Resources’ next exploration steps for North Mitchell (DECXF)?

Decade plans detailed mapping, expanded surface sampling, and to prioritize drill targets ahead of a maiden drill program in 2026, subject to permits and financing.

Where were Decade’s North Mitchell samples assayed and what methods were used?

Samples were prepared and assayed at MSA Labs; gold by fire assay (AA/gravimetric) and multielement ICP-MS with overlimit reanalysis.

How close is Decade’s North Mitchell property to major regional deposits noted in the release?

The property is contiguous to major Golden Triangle deposits including KSM, Snowfield, Treaty Creek, and Brucejack, per the company statement.