An Australian junior has been making headlines after securing a critical mineral and precious metal project directly west of the largest antimony deposit in the United States.
Resolution Minerals Ltd (ASX: RML) just announced that it has signed a binding agreement to acquire the Horse Heaven project in Idaho. It resides next to the Stibnite gold-antimony project under development by Perpetua Resources Corp (TSE: PPTA) (NASDAQ: PPTA). Horse Heaven has a series of drill ready targets that Resolution will be pursuing this year.
The site will cost the Aussie mining company C$890,000 in cash, 444.8 million common shares and 222.4 million stock options exercisable at C$0.016 apiece. Those options will expire in three years. Stallion Uranium Corp (CVE: STUD) (OTCMKTS: STLNF) was the previous operator at the site.
“It’s got a ton of blue sky for shareholders of the company,” Resolution chief executive Craig Lindsay said in an interview. “It’s a past producer of gold, it’s a past producer of antimony [Sb] and it’s a past producer of tungsten.”
All three of these commodities have ascended to record high prices in recent months.
Linsday also pointed out that the high-voltage power line being set up for the Stibnite project runs across the Horse Heaven property. This will be highly beneficial going forward, he explained.
“We’re in an amazingly good neighbourhood with excellent infrastructure,” Linsday added.
Read more: NevGold pulls up even more promising antimony grades from Nevada property
Trump aims to make life easy for Sb miners
Another important development Resolution’s CEO highlighted is the Trump Administration’s recent decision to allocate an additional US$2.5 billion dollars to critical minerals as part of the “Big Beautiful Bill” being considered by the Senate. It passed through the House of Representatives on May 22.
This is complemented by the president’s recent executive orders to fast-track domestic critical mineral projects.
“As many governments around the world look to onshore their supply of critical minerals, such as Sb and tungsten, we have secured a commanding ground position with known antimony occurrences,” Executive Director, Aharon Zaetz, said in RML’s press release about the acquisition.
OMG $RML
🚨 $RML – The Only ASX Antimony Play with a Tier-1 US Critical Minerals Asset Adjacent to a $2B Giant 🇺🇸🪖🔥
Resolution Minerals (ASX:RML) just secured what could be one of the most strategically valuable critical mineral plays on the ASX.
Let’s break down why… pic.twitter.com/hqBL0bvNlq
— Bhavdip Sanghavi (@bhavdip143) June 10, 2025
Rock chip samples return up to 19.15% Sb
Also, up to 230 grams per tonne tungsten, 5.9 g/t gold and 230 g/t silver.
The project served as a crucial source of antimony for the Americans during the First World War. During that period, multiple railcars full of the military metalloid were shipped from an open pit at Horse Heaven’s Antimony Ridge area.
The American Antimony Project in Nevada, currently held by Xtra Energy Ord Shs (OTCMKTS: XTPT), is another past-producer that helped fuel Uncle Sam’s war machine during the late 1910s.
Although multiple U.S. Sb mines were operational during that time due to the mineral’s essential nature, antimony mining in the country slowed to a dull roar for decades before the recent resurgence of interest. Now, sites like Horse Heaven, Xtra Energy’s project and NevGold Corp‘s (CVE: NAU) (OTCMKTS: NAUFF) (FRA: 5E50) Limousine Butte operation have been attracting attention.
In addition to its defence applications, the element is essential for clean energy products like solar panels and wind turbines.
Read more: NevGold raises $5.5M for promising gold-antimony prospects in Nevada
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