Doubleview Provides Cobalt Resource Summary for the Hat Polymetallic Deposit in Advance of Updated MRE and PEA

Doubleview (OTCQB: DBLVF) provided a cobalt summary for the Hat polymetallic deposit ahead of an updated MRE and PEA on December 2, 2025.

Rhea-AI Summary

Doubleview (OTCQB: DBLVF) provided a cobalt summary for the Hat polymetallic deposit ahead of an updated MRE and PEA on December 2, 2025. The company reported Indicated 150 million tonnes containing 28M lb (≈12,700 t) Co at 0.008% Co and Inferred 477 million tonnes containing 91M lb (≈41,300 t) Co at 0.009% Co. Cobalt occurs uniformly with copper and pyrite in an alkalic porphyry system. Metallurgical testwork to date shows cobalt is liberated into a clean pyrite concentrate; additional testwork is ongoing. The company noted Hat's scale and Tier‑1 jurisdiction could support future domestic cobalt supply if the project advances.

Positive

• Indicated cobalt: 28M lb (~12,700 t) in 150Mt
• Inferred cobalt: 91M lb (~41,300 t) in 477Mt
• Cobalt uniformly associated with copper and pyrite
• Metallurgical tests show cobalt in clean pyrite concentrate
• Project located in a Tier‑1 jurisdiction

Negative

• Cobalt grades are low at 0.008–0.009% Co
• Mineral Resources are not Mineral Reserves or proven economic
• Cobalt is a by‑product; primary value drivers are copper and gold
• Additional metallurgical work is ongoing, leaving recovery uncertainty

Argus Dec 2 session

-1.76% close to close Open Argus

Details

News Market Reaction – DBLVF

In the Dec 2 session, DBLVF declined 1.76%, reflecting a mild negative market reaction.

Data tracked by StockTitan Argus on the day of publication.

Market Context

This announcement details the cobalt component of Doubleview’s Hat polymetallic deposit, citing 150 ...

Analysis

This announcement details the cobalt component of Doubleview’s Hat polymetallic deposit, citing 150 million tonnes indicated and 477 million tonnes inferred with associated cobalt grades. It reinforces Hat’s role as a multi‑metal system alongside copper, gold, silver, and scandium, ahead of an updated MRE and PEA. Investors may focus on forthcoming economic studies, ongoing metallurgical testwork, and how cobalt integration affects the project’s overall critical‑minerals positioning and development optionality.

Key Figures

Indicated cobalt tonnage: 150 million tonnes Indicated cobalt metal: 28 million pounds Indicated cobalt grade: 0.008% Co +5 more

Indicated cobalt tonnage

150 million tonnes

Indicated resource at Hat Deposit

Indicated cobalt metal

28 million pounds

Cobalt contained in indicated resource

Indicated cobalt grade

0.008% Co

Cobalt grade in indicated resource

Inferred cobalt tonnage

477 million tonnes

Inferred resource at Hat Deposit

Inferred cobalt metal

91 million pounds

Cobalt contained in inferred resource

Inferred cobalt grade

0.009% Co

Cobalt grade in inferred resource

Global cobalt processing share

More than 70%

Share of refined cobalt processed in China

Indicated cobalt tonnes

≈12,700 tonnes

Approximate cobalt tonnage from indicated resource

Historical Context

5 past events · Latest: Dec 08

5 events

1. Dec 08

   Drill season update

   24h Move

   -13.1%

   Largest Hat drill season completed with 13,290 m and 100% mineralized holes.

2. Dec 04

   Drill assays update

   24h Move

   -1.3%

   H099 returned 438 m at 0.40% CuEq, extending high‑grade domains and pit limits.

3. Dec 02

   Cobalt resource detail

   24h Move

   -1.8%

   Outlined indicated and inferred cobalt inventory ahead of updated MRE and PEA.

4. Nov 25

   Scandium metallurgy

   24h Move

   +2.6%

   Reported 82% primary scandium extraction and 88% overall recovery to Sc2O3.

5. Nov 20

   Scandium potential

   24h Move

   +13.0%

   Highlighted large scandium resource estimate and upcoming MRE and PEA work.

24h Move is the share-price change in the day after each event; other market factors may also have contributed.

Key Terms

mineral resource estimate, preliminary economic assessment, alkalic porphyry, pyrite concentrate, +4 more

8 terms

mineral resource estimate technical

"in advance of the upcoming updated Mineral Resource Estimate ("MRE")"

A mineral resource estimate is a calculated approximation of how much metal or mineral material likely exists in a particular deposit and where it sits underground, similar to estimating how many cookies are in a jar by peeking at the layers. It matters to investors because it provides a data-based starting point for judging a project's potential value, future production and risks, while not guaranteeing recoverable or profitable amounts.

preliminary economic assessment financial

"upcoming updated Mineral Resource Estimate ("MRE") and Preliminary Economic Assessment ("PEA")"

A preliminary economic assessment is an initial analysis that estimates the potential profitability and feasibility of a project or resource, such as a new mineral deposit or development venture. It provides a rough idea of costs, benefits, and risks, helping investors decide whether to pursue more detailed studies. This early evaluation is important because it offers a snapshot of whether the project is worth further investment and development.

alkalic porphyry technical

"outlined a large alkalic porphyry type copper-gold-cobalt-scandium resource"

An alkalic porphyry is a type of underground rock body formed when mineral-rich molten rock cools and crystallizes, creating a large, often porous mass that commonly concentrates metals such as copper, gold and sometimes molybdenum. For investors, these deposits matter because they can host large, high-value ore bodies; thinking of the rock like a cookie with concentrated metal “chips” helps explain why finding one can underpin a long-lived, potentially profitable mine.

pyrite concentrate technical

"cobalt is efficiently liberated into a clean pyrite concentrate suitable for"

A pyrite concentrate is a mined and processed material made mostly of pyrite, an iron‑sulfur mineral, separated from waste rock so the product is a high‑grade pile of that single mineral. Investors care because it can be sold for its sulfur and metal content or used in industrial processes, but it also brings extra processing costs, potential revenue, and environmental and regulatory liabilities—like a bulk shipment of a single raw ingredient that must be handled carefully.

lithium-ion batteries technical

"It is essential for:High-performance lithium-ion batteriesSuperalloys used"

Rechargeable lithium-ion batteries are lightweight, high-energy storage cells that use lithium ions moving between electrodes to store and release electricity, like a refillable fuel tank for electronic devices and electric vehicles. Investors care because they power a wide range of products from phones to cars and grid systems, so improvements, costs, supply chain constraints, or safety issues can directly affect manufacturers’ profits, product demand, and capital expenditure plans.

superalloys technical

"High-performance lithium-ion batteriesSuperalloys used in aerospace and defense"

Superalloys are advanced metal mixtures designed to keep their strength, shape and resistance to heat and corrosion under extreme conditions—think of them as high-performance engines for parts that must work reliably at very high temperatures. They matter to investors because demand for these materials ties directly to capital-intensive industries like jet engines, power generation and industrial manufacturing; changes in supply, production costs or new materials can affect profit margins, project timelines and long-term market growth.

critical mineral regulatory

"Cobalt is designated a critical mineral by Canada, the United States"

A critical mineral is a naturally occurring element or metal that is essential for modern technologies—like batteries, electronics, clean energy systems and defense—and whose supply is vulnerable to disruption. Investors care because these minerals act like key building blocks: shortages, geopolitical controls, or production bottlenecks can sharply raise costs, stall product rollouts, change profit forecasts, and prompt government policy or subsidies that affect company valuations.

ni 43-101 regulatory

"Qualified Person as defined by NI 43-101, has reviewed and approved"

A Canadian regulatory standard that sets the rules for how mining and exploration companies must report mineral resources and reserves, requiring technical reports prepared or signed off by an independent, certified expert. It matters to investors because it creates a consistent, transparent “inspection report” for mining projects, making it easier to compare prospects, judge the reliability of claims, and assess geological and financial risk before investing.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Vancouver, British Columbia--(Newsfile Corp. - December 2, 2025) -  Doubleview Gold Corp. (TSXV: DBG) (OTCQB: DBLVF) (FSE: A1W038) (FSE: 1D4) ("Doubleview" or the "Company") is pleased to provide a summary of the cobalt component of its Hat Polymetallic Deposit in northwestern British Columbia, in advance of the upcoming updated Mineral Resource Estimate ("MRE") and Preliminary Economic Assessment ("PEA"). Based on the Company's review of publicly available information, the Hat Deposit may contain one of the largest undeveloped cobalt inventories associated with a Canadian mineral deposit.

The Hat Deposit Maiden Mineral Resource Estimate, released July 25, 2024, outlined a large alkalic porphyry type copper-gold-cobalt-scandium resource, within which cobalt occurs as a by-product metal uniformly associated with copper and pyrite mineralization. The cobalt component of the resource is summarized as follows:

• Indicated: 150 million tonnes containing 28 million pounds (approximately 12,700 tonnes) of cobalt at 0.008% Co

• Inferred: 477 million tonnes containing 91 million pounds (approximately 41,300 tonnes) of cobalt at 0.009% Co

The Hat Deposit contains one of the more significant undeveloped cobalt-containing mineral resources in Canada. Mineral Resources are not Mineral Reserves and do not have demonstrated economic viability.

Cobalt is consistently distributed throughout the alkalic porphyry system alongside copper, gold, silver, and scandium. Metallurgical testwork to date indicates that cobalt is efficiently liberated into a clean pyrite concentrate suitable for conventional downstream processing. Additional metallurgical work is ongoing.

Farshad Shirvani, President & CEO, commented: "Copper, gold, and scandium remain the primary value drivers at the Hat Deposit, but the cobalt content represents a meaningful additional component of the project's critical-minerals profile. As demand for secure and responsibly sourced battery metals continues to rise, the Hat Deposit's location in a Tier-1 jurisdiction and its unusually large cobalt endowment strengthen the project's long-term relevance. As we complete the updated MRE and advance our PEA, cobalt will be one of several important contributors evaluated in the broader economic framework."

Why Cobalt from Hat Matters

Cobalt is designated a critical mineral by Canada, the United States, the European Union, Australia, Japan, and the United Kingdom. It is essential for:

• High-performance lithium-ion batteries

• Superalloys used in aerospace and defense

• Clean-energy technologies including wind, fuel cells, and emerging grid-storage systems

More than 70% of refined cobalt is processed in China, and most mine supply originates from the Democratic Republic of Congo. Western governments and industry groups are seeking secure, ethical, and transparent supply chains. Canada currently produces only minor by-product cobalt amounts. The Hat Deposit has the scale, continuity, and jurisdictional advantages to potentially contribute to future domestic supply should the project advance through the necessary evaluation and development stages.

Qualified Person

Erik Ostensoe, P.Geo., a consulting geologist and Doubleview's Qualified Person as defined by NI 43-101, has reviewed and approved the technical disclosure in this news release. Mr. Ostensoe is not independent of Doubleview as he is a shareholder of the Company.

About the Hat Polymetallic Deposit

The Hat Deposit is located in northwestern British Columbia and is a large alkalic-porphyry system hosting significant copper, gold, cobalt, and scandium mineralization. The project has been advanced through multiple exploration campaigns, geophysical surveys, metallurgical test programs, and drill programs targeting expanded resource potential. An updated MRE and PEA are underway and expected before the end of 2025.

Open Pit  Model Hat	Resource Category	Tonnage	Average Grade					Metal Content
			CuEq	Cu	Co	Au	Ag	CuEq	Cu	Co	Au	Ag
		Mt	%	%	%	g/t	g/t	million lb	million lb	million lb	thousand oz	thousand oz
In Pit	Indicated	150	0.408	0.221	0.008	0.19	0.42	1,353	733	28	929	2,045
	Inferred	477	0.344	0.185	0.009	0.15	0.49	3,619	1,945	91	2,328	7,575

 

Scandium Exploration Target

The Hat Deposit also hosts a previously disclosed exploration target of 300-500 million tonnes averaging approximately 40 ppm (0.004%) Sc₂O₃.

"The scandium resource potential is based on the drill holes on the property drilled for (July 25, 2024) maiden resource estimate for other metal content than scandium. The potential quantity and grade are conceptual in nature, there has been insufficient exploration to define a mineral resource, and it is uncertain if further exploration will result in the target being delineated as a mineral resource."

A NI 43-101 Technical Report supporting the 2024 MRE is filed on SEDAR+.

On behalf of the Board of Directors,

Farshad Shirvani, President & Chief Executive Officer

For further information please contact:

Doubleview Gold Corp
Vancouver, BC Farshad Shirvani
President & CEO

T: (604) 678-9587
E: corporate@doubleview.ca

Forward-Looking Statements

This news release contains forward-looking statements that involve risks and uncertainties. Forward-looking statements relate to expectations, beliefs, projections, and future events and are based on current assumptions as of the date of this news release. Forward-looking statements include, but are not limited to, statements regarding: anticipated timing of the updated Mineral Resource Estimate and Preliminary Economic Assessment; interpretations of the cobalt component of the Hat Deposit; metallurgical results; the potential for future production; and the potential significance of cobalt, scandium, and other metals to the project's economic considerations.

Forward-looking statements are subject to various risks and uncertainties that may cause actual results to differ materially, including: exploration and development risks; changes in commodity prices; environmental, permitting, and regulatory risks; risks inherent to metallurgical testwork; uncertainties in geological interpretations; and other risks described under the Company's filings on SEDAR+. Readers should not place undue reliance on forward-looking statements. Except as required by law, the Company undertakes no obligation to update forward-looking statements.

NEITHER 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/276613

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

How much cobalt did Doubleview report at Hat (OTCQB: DBLVF) on December 2, 2025?

Doubleview reported Indicated 28M lb Co (~12,700 t) and Inferred 91M lb Co (~41,300 t).

What cobalt grades were reported for the Hat deposit (DBLVF)?

Reported cobalt grades are 0.008% Co (Indicated) and 0.009% Co (Inferred).

Will cobalt at Hat be economically evaluated in the upcoming PEA for DBLVF?

Yes. Cobalt will be evaluated as one of several contributors in the updated PEA framework.

Does metallurgical testwork show cobalt can be recovered from Hat (DBLVF)?

Initial testwork indicates cobalt is efficiently liberated into a clean pyrite concentrate; further work is ongoing.

Why is Hat's cobalt significant for North American supply chains?

Hat's scale and location in a Tier‑1 jurisdiction could help diversify Western cobalt supply if developed.