Pinnacle Minerals Ltd (ASX:PIM) has commenced its first systematic modern exploration program for the Antimony Queen Project in Washington State, United States, targeting historic antimony-gold underground workings in the Gold Creek District.
Field activities are now underway across the 500-hectare (approximately five square kilometre) site, which features multiple historic adits and over 1,000 feet of underground development, offering a brownfields platform for rapid advancement using contemporary techniques.
The project lies within a historically productive antimony-gold district in Okanogan County, near Wenatchee, with past production of about 1,000 tonnes of stibnite ore and several hundred tonnes of antimony oxide since 1906.
Initial fieldwork, including geological mapping and sampling, has been completed to confirm mineralisation and validate historical underground and surface workings.
Historical sampling datasets are under review to assess rock-chip and channel sample reliability, aiding a modern 3D model of the workings.
Airborne magnetic and satellite data processing continues to delineate structural controls and high-priority drill targets, with assay results from recent sampling expected soon to refine geological models.
U.S.-based consultants are engaged, and discussions with local authorities advance drill permitting for a planned maiden program.
Antimony, a designated U.S. critical mineral vital for defence, batteries, and semiconductors, underscores the project’s strategic value amid domestic supply chain priorities.
The site benefits from road access and proximity to infrastructure in a key North American minerals corridor.
Pinnacle’s Executive Chairman, William Witham, commented: “Our work at Antimony Queen presents a genuine opportunity to revitalise a historic U.S. antimony and gold district using modern exploration techniques and technology.
“The early results from our Antimony Queen Gold Creek fieldwork are highly encouraging and represent an important milestone as Pinnacle accelerates its transition into an active U.S explorer within a rapidly expanding critical minerals portfolio.”
“The verification of multiple historic workings, the extent of underground development, and the confirmation of mineralisation across the project area reinforce both the quality of this asset and its strong discovery potential.
“With assay results pending, geophysical datasets being processed, and drill permitting progressing, we are now building a clear pipeline of exploration catalysts.”
“Antimony Queen strengthens our growing North American footprint alongside our Thunder Mountain Project in Idaho, positioning Pinnacle to play an increasingly important role in the U.S supply chain for critical minerals.
“We look forward to advancing exploration, defining high-priority drill targets, and delivering value for our shareholders.”
Further mapping, sampling, and data interpretation will guide drilling design, enhancing Pinnacle’s North American portfolio near projects like Perpetua Resources’ Stibnite.
Assay integration into 3D models promises refined targets, bolstering the company’s focus on strategic minerals alongside assets in Quebec and Australia.
Investors await results amid rising antimony demand.
