The Potential to Secure U.S. Antimony

The Stibnite Gold Project has the potential to secure America’s supply of antimony. Currently, the United States has no mined supply of this critical mineral. We have the opportunity to change that. The Stibnite Gold Project could supply approximately 35 percent of the American demand for antimony in the first six years of production, according to our feasibility study. Mining responsibly here at home can help secure a safe and renewably-powered future.

Antimony is one of 35 minerals that have been deemed critical by the Department of the Interior because of its unique mineral properties. It has also been named a critical mineral by the European Union, Canada and Australia. Antimony strengthens alloys and makes them resistant to corrosion. It is used in munitions for national defense, flame retardants, wind and hydro turbines, solar panels, large storage batteries, spaceships, cell phones, semiconductors, plastics and cable sheathing.

Currently, China controls more than half of the world’s antimony supply. Collectively, China, Russia and Tajikistan supply more than 90 percent of global production. Dependance on these countries puts our own supply chain at risk. Our economic and national security, along with our goal to achieve a lower carbon future, depend on domestic production of this critical mineral.

Why is Antimony so Important?

America’s current way of life is dependent upon antimony. From wind and hydro turbines to semiconductors and cellphones, antimony is a key component of the technology that powers our nation, keeps us entertained, on the move and safe.  

Renewable Energy Applications: With a secure and responsibly sourced supply of antimony, we can continue to make significant advancements in clean energy through technologies like solar panels, wind and hydro turbines, and semi-conductors. Antimony also has a variety of uses in battery technology—from the batteries in hybrid and electric cars, to cutting edge solid-state batteries that capture and convert waste heat into electricity, to liquid batteries that will store largescale amounts of renewable energy.

Safety and Security: A domestic antimony source is vital to national security by contributing to effective infrared camouflaging, night vision goggles, and munitions supplies. Antimony is also used to produce effective fire retardants in plastics and fabrics helping contain forest fires that ravage the western half of the United States.

Everyday Uses and Technology: The cell phones in our pockets, the cameras we take on vacation, the battery in the hybrid and electric cars we drive, and even the furniture in our homes all require antimony. Used for semiconductors and motherboards, antimony also plays a critical role in powering much of the technology we rely on.

Webinar: Antimony & the Stibnite Gold Project

Watch our webinar to learn more about antimony and the critical role it plays in America’s energy, technology and defense future.

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Antimony and the Green Economy   

Numerous studies are showing antimony will be key to helping us achieve a more sustainable and efficient future. It can be used in molten-salt batteries, solid-state batteries, semi-conductors, and even self-healing solar panels.   

Researchers at MIT have developed an antimony based liquid battery that will allow for the large-scale storage of renewable energy. The technology is currently being used at a Nevada data center and is in development as a tool for sustainable infrastructure development. This development will help renewable energy sources compete with traditional power plants.   

Antimony also has the potential to increase the efficiency of energy production and unlock power from unexpected places. Researchers from Texas, Germany, and India have created various solid-state batteries that use Magnesium-Antimony and Silver-Antimony-Telluride compounds to capture and convert what is known as waste heat into electricity. Waste heat refers to the excess energy generated by power plants and other machines or processes that is not converted into usable energy and is typically released as heat.  

Antimony already plays a role in solar panels for its transparent, infrared insulating and electrical conduction properties. However, research from the University of York shows antimonyselenide could play an even more valuable role. This compound is a solar absorbing material which means it can be used to turn light into electricity. What is unique about antimony-selenide is it can also self-heal. Keith Mckenna who helped discover this characteristic, compared antimony-selenide’s self-healing capability to a salamander’s ability to regenerate severed limbs. Self-healing is incredibly unusual and will likely allow antimony-selenide to find widespread use in electronics, solar panels and other photovoltaics, as well as lighting and display systems.   

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