Junior exploration companies across the globe stand or fall on drill programs that could turn them into bigger stories. Here are four juniors with company-making discovery potential in proven mineral districts.
Abitibi Metals
Abitibi Metals (CSE: AMQ; US-OTC: AMQFF) is advancing its B26 polymetallic project in northwestern Quebec, which it fully secured in June under an agreement to acquire the remaining 20% from SOQUEM, a mineral exploration company and subsidiary of Investissement Quebec.
SOQUEM will retain a 1% net smelter return (NSR) royalty. In addition, Abitibi Metals will have the right of first refusal on the agency’s Wagosic and Carheil projects, which are located within or close to B26.
The project is about 620 km north of Montreal and just 7 km southeast of the past-producing Selbaie mine.
Abitibi is fully funded for a 40,000-metre drill program this year at B26. The deposit remains open laterally and at depth and in May the junior returned one of its strongest intercepts yet. Hole 1274-25-378W1 cut 46.7 metres grading 1.33% copper, 0.13 gram gold per tonne and 3.39 grams silver from 946 metres depth, including 14 metres at 3.63% copper, 0.37 gram gold and 7.67 grams silver. The intercept sits within the main B26 horizon.
Another hole, 1274-25-378, returned 46.9 metres grading 0.43% copper, 0.1 gram gold and 1.69 grams silver from 877.35 metres, including 8.3 metres at 1.62% copper, 0.23 gram gold and 3.39 grams silver.
An updated resource in February outlined 12.96 million indicated tonnes grading 1.19% copper, 1.16% zinc, 0.44 gram gold and 30.8 grams silver, for 340 million lb. of contained copper, 332 million lb. zinc, 184,000 oz. gold and 12.8 million oz. silver.
Inferred resources total 12.34 million tonnes at 1.6% copper, 0.16% zinc, 0.68 gram gold and 8.14 grams silver, for 435 million lb. of contained copper, 43 million lb. zinc, 268,000 oz. gold and 3.2 million oz. silver.
Abitibi Metals has a market cap of about $153 million (US$108 million).
Brunswick Exploration
Brunswick Exploration (TSXV: BRW) is focused on lithium exploration in Quebec’s Eeyou Istchee-James Bay region and kicked off a 4,000-metre drill program at its main Mirage project in July.
Mirage, about 40 km south of the Trans-Taiga Highway, is one of the largest undeveloped hard-rock lithium projects in the Americas.
The project hosts an inferred resource of 52.2 million tonnes grading 1.08% lithium oxide (Li20) and 131 parts per million tantalum oxide (Ta205) for 585,000 tonnes of Li20, according to an initial resource released in January. More than 70% of the resource is contained within five dykes found above a vertical depth of 150 metres from surface, all of which remain open in all directions.
The company discovered high-grade spodumene pegmatite dykes outcropping on the property in 2023 and has delineated nine main dykes so far. The spodumene-bearing boulder train at Mirage measures about 6.5 km in length and 1.4 km in width.
Summer drilling at Mirage will initially target the MR-1 and MR-4 dykes. The MR-1 dyke remains open in all directions and previous highlight results include 25.8 metres grading 2.57% Li20 in hole MR-23-02.
Highlights from earlier drill programs include 93.45 metres grading 1.55% Li20 in drillhole MR-24-62; 69.3 metres at 1.64% Li20 in drillhole MR-24-61; and 28.3 metres of 1.17% Li20 in MR-24-50. All the intercepts are from the MR-6 dyke and started from surface.
The company has focused its drilling within Mirage’s conceptual pit shell, leaving areas outside the resource untested, including an outcropping spodumene pegmatite 3.5 km to the northeast.
Brunswick also plans to drill about 2,000 metres at its Anatacau Main project, about 22 km east of Rio Tinto’s (LSE, NYSE, ASX: RIO) Galaxy project.
Highlights from previous drilling include 90.5 metres grading 1.31% Li20 from 202 metres depth in drill hole AN-26-07 and 120.7 metres grading 1.31% Li20 from 30 metres in AN-25-05.
In April the company completed its option agreement for the Anatacau Main and nearby Anatacau West projects. It now owns a 90% stake in both. The remaining 10% free-carried interest is held by Electric Elements Mining, a company controlled by Osisko Development (NYSE: ODV, TSXV: ODV), with Agnico Eagle Mines (TSX, NYSE: AEM) holding a stake.
In Greenland, Brunswick is exploring its early-stage Nuuk lithium project, about 90 km northeast of the namesake capital. Helicopter-supported prospecting and mapping started in July.
Brunswick Exploration has a market cap of about $44 million.
Carnaby Resources
Carnaby Resources (ASXL: CNB) is focused on its Greater Duchess copper-gold project in the Australian state of Queensland, about 1,500 km northwest of Brisbane.
The 1,946-sq.-km project contains six deposits including Mount Hope, Nil Desperandum, Lady Fanny and Trekelano, as well as copper-rich iron oxide copper gold targets over a 100-km corridor.
A prefeasibility study completed in March envisioned mining six open pits over the first six years and transitioning to underground mining at the Mount Hope Central and Nil Desperandum deposits in year three for another nine years. Over a 12-year-mine life Greater Duchess would churn out 147,000 tonnes of copper and 70,000 oz. gold.
The study outlined a post-tax net present value (at a 7% discount rate) of A$322 million (C$316.5 million) and an after-tax internal rate of return (IRR) of 281%. Pre-production capital costs of A$11 million could be repaid in 13 months.
Greater Duchess contains 17 million indicated tonnes grading 1.5% copper and 0.3 gram gold for 550 million lb. of contained copper and 145,700 oz. gold. Inferred resources add 12.2 million tonnes grading 1.1% copper and 0.2 gram gold for 288 million lb. copper and 84,500 oz. gold.
All the deposits remain open at depth. The Greater Duchess project also hosts the historic Duchess mine, which produced about 205,000 tonnes grading 12.5% copper between 1900 and 1940.
The company launched a 3,000-metre reverse circulation drill program in April targeting priority targets at Trekelano, where recent results from Trek 2 include 18 metres grading 4% copper and 1.1 grams gold from 115 metres in hole TW-12.
The company has a toll milling and offtake agreement with Glencore International (LSE: GLEN) for all of the project’s fresh sulphide ore and concentrate.
Carnaby Resources has a market cap of about A$153 million.
Dakota Gold
Dakota Gold (NYSE-A: DC) plans to complete a prefeasibility study (PFS) before the end of the year on its Richmond Hill gold project, about 320 km west of South Dakota’s capital, Pierre.
The project hosts a large oxide gold system amenable to conventional open-pit mining and heap leach processing and is part of a 180-sq.-km land package controlled by the company near the historic Homestake mine. (Homestake produced about 40 million oz. gold over more than 145 years.)
According to an S-K 2300 Initial Assessment report last year, Richmond Hill is one of the largest development stage oxide gold resources in the United States. The report gave the project an after-tax net present value (NPV) of $1.6 billion (C$2.4 billion) and an after-tax IRR of 55% at initial costs of $384 million, based on a gold price assumption of $2,350 per ounce.
Richmond Hill could produce 2.6 million oz. over a potential mine life of 28 years. Those estimates are based on 244.7 million measured and indicated tonnes grading 0.46 gram gold and 4.83 grams silver for 3.6 million oz. of contained gold and 38 million oz. silver, according to an initial resource from February 2025. Dakota is targeting production in 2029.
Drilling has recently identified additional pockets of higher-grade mineralization within the mine’s planned open-pit development area. In July the company reported that expansion hole RH26C-432 cut 26 metres grading 11.36 grams gold and 14.92 grams silver from about 75 metres depth. Hole RH26C-437 returned 38 metres of 2.89 grams gold and 8.18 grams silver from about 145 metres downhole.
Other highlights include hole RH26C-452, which returned 16 metres of 1.63 grams gold and 12.03 grams silver from 79 metres depth. The drill program, which finished in July, comprised 17,273 metres across 112 holes.
Data from more than 350 holes completed this year and last will be incorporated into the upcoming PFS.
Dakota Gold has a market cap of about $604 million.
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