Top 5 Australian Mining Stocks This Week: Resolution Soars on US Antimony Permitting Support

Market and commodities price round-up

The S&P/ASX 200 (INDEXASX:XJO) opened at 8,262.4 on Tuesday (April 7) and closed at 8,973.20 on Thursday (April 9), reflecting a 2.98 percent increase over the period.

Gold and silver prices rose in US dollars and slightly dipped in Australian dollars this week. The yellow metal decreased 1.02 percent from US$4,672.80 on Monday to US$4,720.37 by Thursday's close of Australian markets. Meanwhile, it decreased a 0.98 percent in Australian dollars, moving from AU$6,768.54 to AU$6,702.08.

Silver jumped 1.38 percent in US dollars from US$73.05 on Monday to US$74.06 on Thursday. In Australian dollars, the metal lowered just 0.53 percent from AU$105.71 to AU$105.15.

Top ASX mining stocks this week

How did ASX mining stocks perform against this backdrop?

Take a look at this week’s five best-performing Australian mining stocks below as the Investing News Network breaks down their operations and why these companies are up this week.

Stocks data for this article was retrieved at 4:10 p.m. AEDT on Thursday using TradingView's stock screener and reflects price movements between the first trading day of the week and Thursday. Only companies trading on the ASX with market capitalisations greater than AU$10 million are included. Mineral companies within the non-energy minerals, energy minerals, process industry and producer manufacturing sectors were considered.

1. Resolution Minerals (ASX:RML)

Weekly gain: 54.35 percent
Market cap: AU$161.5 million
Share price: AU$0.071

Resolution Minerals is an antimony-focused explorer based in South Australia.

The company is currently focused on the Horse Heaven gold-antimony-tungsten project in Idaho, US, aiming to provide an end-to-end solution for domestic critical minerals supply to the US defence industry.

Horse Heaven holds the Antimony Ridge prospect, at which rock chip samples have returned grades up to 50 percent antimony, 1,420 grams per tonne (g/t) silver and 3.1 g/t gold.

On Wednesday (April 8), the company announced that Antimony Ridge secured FAST-41 status from the US Trump administration. The designation helps projects to accelerate permitting timelines through enhanced inter-agency coordination, transparent milestone tracking and dedicated federal oversight.

CEO for US Operations Craig Lindsay called the selection a significant step forward for Antimony Ridge that reinforces its strategic importance.

“This designation provides a clear and more efficient pathway through permitting, allowing us to progress bulk sampling and drilling activities with greater confidence and transparency,” he said.

Moving forward, Resolution said it will now work closely with its primary permitting authority, the US Forest Service, to advance the Antimony Ridge Plan of Operations through the FAST-41 process.

After closing at AU$0.046 last week, shares of Resolution Minerals spiked to a weekly high of AU$0.077 Wednesday following the news.

2. OD6 Metals (ASX:OD6)

Weekly gain: 45 percent
Market cap: AU$32.57 million
Share price: AU$0.145

OD6 Metals is focused on exploring and developing critical minerals projects in Australia and the US, with headquarters in Subiaco.

The company’s Australian portfolio includes the advanced-stage Splinter Rock clay-hosted rare earths project in Western Australia’s Esperance–Goldfields region. Splinter Rock holds a JORC mineral resource estimate of 682 million tonnes grading 1,338 parts per million total rare earth oxides (TREO). OD6 is currently advancing metallurgical testwork and engaging with potential offtake partners, with plans to begin production in five years.

OD6 also owns the Gulf Creek copper-zinc project in New South Wales, a high-grade VMS style deposit that was mined for copper between 1896 and 1912.

At the beginning of March, the company entered an exclusive option agreement to wholly acquire the Quinn fluorspar project, comprising a district scale cluster of fluorspar deposits and prospects in Nevada, US. It is currently performing a due diligence program at the site.

On Tuesday, OD6 shared first assay results from rock chip sampling at Quinn’s Mammoth prospect, which it said “confirm a large-scale, high-grade fluorspar system.” The samples returned grades up to 53.2 percent calcium fluoride.

Following the assay results, OD6 reported results from initial channel samples on Thursday, highlighting 12 metres at 40.8 percent calcium fluoride in a breccia replacement zone.

Next steps of the company include the collection of new samples from surface showings to confirm the accuracy of historic reports, followed by mapping and geochemistry programs.

3. Cauldron Energy (ASX:CXU)

Weekly gain: 34.88 percent
Market cap: AU$107.96 million
Share price: AU$0.058

Headquartered in Subiaco, Cauldron Energy is an exploration and development company focused on exploring for critical minerals, particularly uranium.

Its portfolio includes its flagship Yanrey uranium project in Western Australia. Yanrey’s Bennet Well deposit has a JORC total uranium resource of 38.9 million tonnes at 360 parts per million uranium oxide equivalent.

Cauldron’s share price has been on an upward trend since March 31. At the time, the company offered several potential explanations to the ASX, including market commentary surrounding quarterly exchange-traded funds (ETF) rebalancing and increasing uranium exposure, as well as positive uranium sentiment due to oil market volatility.

On Tuesday, Cauldron Energy announced that it has been included in the BetaShares Global Uranium ETF (ASX:URNM), which provides exposure to a portfolio of global uranium companies across the nuclear fuel cycle.

“As global capital continues to flow into nuclear energy and uranium equities, inclusion in a leading ETF such as URNM enhances our visibility to a broader investor base and supports our ongoing growth strategy,” CEO Jonathan Fisher said.

According to the company, the uranium ETF inclusion could also provide broader access to institutional capital and overall improved exposure to the nuclear energy industry.

Shares of Cauldron closed last week at AU$0.042, then climbed through the week to a close of AU$0.058 on Thursday.

4. Xstate Resources (ASX:XST)

Weekly gain: 31.82 percent
Market cap: AU$10.72 million
Share price: AU$0.029

Xstate Resources is an oil and gas explorer focused on its flagship tenement in Queensland, the Diona project.

Diona is located approximately 12 kilometres west of the Waggamba gas field and 11 kilometres east of the Taylor gas and oil field.

Xstate completed its acquisition of a 51 percent working interest in the tenement in September, following an acquisition agreement with Elixir Energy (ASX:EXR,OTCPL:ELXPF) announced in April 2025.

According to a March 5 project update, the company’s plans for the Diona-1 gas discovery are moving forward towards testing. It has finished the program and design for stimulation and testing at the Diona-1 well.

After it is stimulated, Xstate will perform flow testing over two weeks, with results reportedly expected in mid-April.

“The well has performed as expected to date and we are very confident that this well will be put onto production in the not too distant future,” Managing Director Andrew Bald said in the release.

No further updates were shared by the company since it released its annual report at the end of March.

After closing at AU$0.023 last week, shares of Xstate climbed to AU$0.028 by Thursday.

5. Pivotal Metals (ASX:PVT)

Weekly gain: 30.77 percent
Market cap: AU$19.66 million
Share price: AU$0.017

Pivotal Metals is an explorer and developer with copper, nickel and platinum-group metals (PGM) projects in Québec, Canada.

The company’s all-Canadian portfolio includes its flagship Horden Lake project and a set of assets in the Belleterre-Angliers greenstone belt: Midrim, Lorraine and Laforce. Horden Lake is the most advanced among all of its projects, dominated by high-grade copper and also containing nickel and platinum-group metals.

As of March 31, Pivotal has commenced Phase 2 metallurgical testwork at Horden Lake, with the goal of optimising nickel, precious metals and PGM processing.

“With strong copper recoveries already demonstrated, this phase of testwork is designed to further enhance the value of Horden Lake by improving recovery of the full suite of metals that contribute important by-product revenue streams,” Managing Director Ivan Fairhall said.

“The program represents an important step in de-risking the project and positioning it for future development and potential strategic engagement.”

In the release, Pivotal also noted that drilling at its Belleterre project is underway, with assays expected to be released in Q2.

Shares of Pivotal Metals closed at AU$0.013 last week before rising this week to AU$0.017 by Thursday.