Antimoine

[energy_isere]

Australia’s Locksley receives $190M EXIM funding interest for California antimony project

Staff Writer | November 3, 2025 |

Australia’s Locksley Resources (ASX: LKY) has received a letter of interest (LOI) from the US Export-Import Bank (EXIM) for a potential financing of $191 million in support of its antimony project in California.

Locksley’s Mojave project in Inyo County is host to a high-grade antimony prospect with historic samples grading up to 46%. The property is situated next to the only active US rare earths mine — MP Materials’ (NYSE: MP) Mountain Pass.

Antimony is a vital ingredient in many military applications as well as batteries and semiconductors. Currently, the US has no domestic source of antimony production, and therefore relies heavily on imports from China.

With the Mojave project, Locksley has aimed to establish the first domestic mine-to-market supply chain for antimony, addressing a critical gap where 90-95% of the refined supply comes from countries outside the US alliance network.

In August, the Australian explorer engaged Washington DC-based advisory group GreenMet to support the advancement of its project by positioning it within key US government initiatives under the Defense Production Act, Inflation Reduction Act and Department of Energy programs.

‘Cornerstone step’

The potential EXIM financing, says Locksley, is a cornerstone step toward broader US government funding, including programs under the Defense Production Act Title III and Department of War (DOW), reinforcing its strategy to establish a 100% American-made antimony.

“This LOI represents a cornerstone in Locksley’s engagement with US federal agencies and paves the way for detailed due diligence and underwriting to advance a comprehensive financing package for the Mojave project,” Locksley CEO Kerrie Matthews stated in a press release.

Matthews added that the LOI provides a foundation to progress formal financing discussions while advancing the company’s downstream and offtake plans.

“With our 100% American-made antimony ingot now produced, we are demonstrating Locksley’s capacity to deliver the next generation of US critical minerals for supply chains,” she said.

“EXIM’s letter of interest represents more than just financial support. It reflects a coordinated US government directive to rebuild domestic critical minerals capability,” Drew Horn, a former White House advisor on critical minerals and chief executive of GreenMet, said in the statement.

https://www.mining.com/australias-locks ... y-project/

Sur le site de Locksley Resources : https://locksleyresources.com.au/desert-antimony/

[energy_isere]

Prospect d'Antimoine (et d'or) en Australie :

Coonambula antimony gold drilling results reveal high grades in Queensland

November 11, 2025

art Mining, in partnership with Great Divide Mining (GDM), has reported the first high-grade antimony gold drilling results from the Coonambula antimony-gold project in Central Queensland, Australia.

The initial analytical results from the former Banshee high-grade antimony mine within the Coonambula project area confirm the high-grade antimony-gold resource, which will help accelerate drilling across the Banshee trend.

Dart Mining is advancing its initial drilling programme at Coonambula using its in-house rig.
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https://www.mining-technology.com/news/ ... s/?cf-view

[energy_isere]

Perpetua partners with Idaho National Lab to build antimony processing plant

Staff Writer | December 10, 2025

Perpetua Resources (Nasdaq, TSX: PPTA) partnered with the Idaho National Laboratory (INL) to host, commission and operate a flexible, modular pilot processing plant expected to be capable of recovering critical and defense-related minerals.


The initiative — part of the Battelle Energy Alliance — is intended to demonstrate the feasibility of producing high-quality, military specification antimony trisulfide using material from Perpetua’s Stibnite project at the INL site.

In October, the company began early works construction at its $1.3 billion Stibnite gold-antimony project in central Idaho, which was fast-tracked by the Trump administration as part US Army’s objective of establishing a fully domestic “ground-to-round” antimony trisulfide supply chain.

The pilot plant is part of a broader partnership between Perpetua and the US Army via the Defense Ordnance Technology Consortium (DOTC) to secure domestic sources of critical minerals and advance domestic defense mineral processing capabilities.

“This partnership highlights Idaho’s role in national security and demonstrates our ongoing commitment to responsible resource development, job creation, and workforce training in Idaho,” Perpetua’s CEO Jon Cherry said in a news release. “The successful demonstration of this plant will contribute to sustained growth in American mineral independence and resilience.”

The pilot plant leverages the critical and strategic materials and defense programs at INL — the US Department of Energy’s (DOE) lead lab for nuclear energy research. Once installed, it will receive samples of material from the Stibnite project, and operators will conduct pilot-scale testing to produce antimony trisulfide concentrate needed for munitions and advanced systems used by US military, Perpetua said.

In May 2025, Perpetua was awarded up to $6.9 million in additional DOTC funding, bringing the company’s total DOTC awards up to $22.4 million.

“As a longtime supporter of the Idaho National Laboratory and Perpetua Resources’ efforts in domestic antimony production, I am thrilled to see this partnership come together,” US House Representative Mike Simpson (R-Idaho) said in a statement.

“Idaho has the potential to provide our country with a domestic source of critical minerals that are essential to our national security needs. This partnership is a win for Idaho, and I am pleased to see our great state once again play such a pivotal role on the world stage.”

https://www.mining.com/perpetua-partner ... ing-plant/

[energy_isere]

Prospect d'Antimoine au Mexique :

J2 Metals to acquire Sierra Plata silver antimony project in Mexico
The project is a 2,200ha land package in the Zacualpan District, near Taxco, Guerrero.

December 23, 2025

https://www.mining-technology.com/news/ ... t/?cf-view

[energy_isere]

L'antimoine du Pakistan, une alternative pour l'approvisionnement des États-Unis

RFI le : 06/01/2026

Le Pakistan ne détient qu'une petite fraction des réserves mondiales d'antimoine, mais c'est suffisant pour susciter l'intérêt des États-Unis, qui n'en produisent quasiment pas et en ont besoin pour fabriquer des retardateurs de flamme, des munitions ou encore des alliages intégrés dans les batteries électriques.

L'intérêt américain pour l'antimoine pakistanais s'est renforcé depuis la décision prise par la Chine d'interdire toute exportation vers les États-Unis à partir de décembre 2024. Ces mesures ont fortement perturbé l'approvisionnement et fait grimper les prix : le trioxyde d'antimoine, une poudre dérivée du métal gris argenté qui est incorporée à divers produits pour les rendre ignifuges, a atteint un pic à 60 000 dollars la tonne mi-2025 et tourne désormais autour de 40 000 dollars, soit près du double de ce qu'il valait il y a un an et demi.

Toute décision commerciale de la Chine a un impact énorme car elle est en position de force : le pays détient un tiers des réserves mondiales, et environ la moitié de la production d'antimoine raffiné, d'antimoine métal et de trioxyde de métal.

Tadjikistan et Pakistan, les alternatives à la Chine

Bien qu'assouplies fin novembre 2025, les restrictions chinoises ont eu suffisamment d'impact pour pousser les États-Unis à accélérer la diversification de leur approvisionnement. Le pays avait déjà commencé à sécuriser une partie de ses achats hors de Chine, depuis une décennie, au vu du déclin de la production chinoise, rappelle le cabinet d'analyse Project Blue.

Le Tadjikistan, qui représente avec la Russie et la Chine 80 % de la production mondiale, selon le site MineralInfo, est déjà un pays auprès duquel les États-Unis se fournissent. Ils s'intéressent aussi de très près au Pakistan, qui ne contient pourtant que 1 % des réserves mondiales mais où tous les gisements ne sont pas exploités. L'antimoine qui y est produit aujourd'hui provient essentiellement de mines artisanales situées dans une région frontalière avec l'Afghanistan.

Plusieurs accords signés

Depuis septembre dernier les annonces se sont multipliées entre des sociétés américaines et pakistanaises. On peut citer les protocoles d'entente signés à Islamabad par l'United States Strategic Metals (USSM) en septembre dernier avec Frontier Works Organization (FWO) le plus grand mineur de minerais critiques au Pakistan. Fin 2025, la société pakistanaise Himalayan a aussi signé un partenariat stratégique avec Nova Minerals, une société cotée aux États-Unis et en Australie. L'entreprise entend produire de l'antimoine de qualité militaire d'ici 2026/2027 et projette d'acheter début 2026 plus de 100 tonnes de concentré d'antimoine pakistanais pour un premier test de raffinage en Alaska, selon le Financial Times.

Les signatures du dernier trimestre 2025 illustrent les intérêts américains pour l'antimoine pakistanais qui était jusque-là essentiellement capté par des acheteurs chinois. Pour Washington, acheter au Pakistan permet aussi d'éviter que les ressources du pays ne tombent dans les mains de la Chine, qui est la première à investir dans les chaines de raffinage, même hors de son territoire.

Signe de ce rapprochement sur fond minier, des représentants américains se seraient vu proposer d'investir dans le développement d'un terminal dédié à l'exportation de minerais critiques, dans le port de Pasni sur la mer d'Arabie. Le projet rapporté par le Financial Times en octobre dernier, mais non confirmé par des voies officielles et manifestement encore embryonnaire, donnerait à Washington un accès privilégié à des ressources minières, aux portes de la Chine, comme le relève le quotidien britannique.

https://www.rfi.fr/fr/podcasts/chroniqu ... 9tats-unis

[energy_isere]

la dernière publication sur l' Antimoine de l' USGS : https://pubs.usgs.gov/periodicals/mcs20 ... timony.pdf



le post pour l'année d'avant : http://www.oleocene.org/phpBB3/viewtopi ... 7#p2407717

[energy_isere]

suite de ce post du 6 juillet 2025 : http://www.oleocene.org/phpBB3/viewtopi ... 9#p2413869

Antimony Resources boosts Bald Hill potential with expanded stibnite mineralization

Staff Writer | February 20, 2026 |

Antimony Resources Corp. announced this week that it has expanded and outlined further “massive” antimony stibnite mineralization at the Marcus West Zone at its Bald Hill project in Canada’s New Brunswick province.


The field crew has exposed further mineralization in bedrock through continued trenching, and sampling is ongoing to further trace it along strike, the company said.

Stibnite is commonly mined for its antimony content. China implemented strict export controls on antimony in September 2024, significantly affecting global supply chains. Efforts to locate and extract the crucial material for defense and high-tech industries are ramping up in Canada and the US.

The new discoveries made on the Bald Hill property are part of the 2026 exploration program which will be carried out in conjunction with the 10,000-meter definition drilling on the Main Zone. The exploration program will include soil sampling as well as prospecting and sampling. An airborne survey is being investigated, ATMY said.

Drilling is scheduled to begin immediately on the Marcus West zone to complete up to six shallow drill holes to test the Zone at a depth of between 30 and 50 meters.

Unexplored areas to be further evaluated also include the Central Zone where 2010 trenching returned 2.90% Sb over 8.18m, which included 5.79% Sb over 1.75m and 8.47% over 1.53m and the South Zone where trenching by ATMY has exposed stibnite mineralization over approximately 150 meters, the company said.

“It is very exciting to see the mineralized samples being brought to surface by the excavator for examination by the geologists,” Antimony Resources CEO Jim Atkinson said in a news release.

”It is obvious that this is a highly mineralized area and the “bladed” stibnite is very attractive,” Atkinson said, adding that work is also progressing well on definition drilling at the Main Zone.

A second drill was added to this program this week, the company said.

https://www.mining.com/antimony-resourc ... alization/

[energy_isere]

un prospect d'Antimoine en Utah :

American Tungsten & Antimony finds high-grade antimony in Utah, US
The initial drilling programme encountered shallow, high-grade stibnite mineralisation.

12th Mar 2026

American Tungsten & Antimony has announced high-grade antimony findings from initial drilling at the Little Emma Prospect, part of its wholly owned Antimony Canyon Project in Utah, US.

The results mark the beginning of its inaugural drilling programme and suggest potential for a substantial antimony system in the country.

The drilling programme encountered shallow, high-grade stibnite mineralisation, offering early validation of the company’s geological model and promising continuity in the mineralised system.

Initial drilling yielded key intercepts including 11.03m at 3.1% antimony from 25.91m, with 2.62m at 12.54% antimony from 29.2m.

Additional findings comprised 8.47m at 2.67% antimony from 31.15m, including 2.2m at 9.69% antimony from 36.88m, and a further intercept of 2.14m at 3.02% antimony from 40.23m.

With more than 20 historic antimony mines in its patented claim block, the Little Emma Prospect underscores the district-scale exploration potential at Antimony Canyon.

The US Government classifies antimony as a critical mineral that is vital for national security due to its applications in defence systems, semiconductors, batteries, flame retardants and advanced manufacturing.

Currently, the US depends heavily on foreign sources, particularly China, for its antimony supply.

https://www.nsenergybusiness.com/news/a ... n-utah-us/