Rare Earth Directory

States

Rare earth mines, projects and companies by US state

22 US states have a tracked rare earth mine, plant, company or pilot, and 11 of them have a mine or project. Wyoming has the most mines and projects (3) and Texas the most plants and mills (4). Only California has an active primary mine. Missouri, Illinois and Arkansas have a page for a historic deposit only.

Verified through Oct 1, 2026

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Bokan Mountain: Exploration, Alaska Bokan Mountain Sheep Creek: Exploration, Montana Sheep Creek Lemhi Pass: Exploration, Idaho / Montana Lemhi Pass Diamond Creek: Exploration, Idaho Diamond Creek La Paz: Exploration, Arizona La Paz Colosseum: Exploration, California Colosseum Silicon Ridge: Exploration, Utah Silicon Ridge Brook Mine: Development, Wyoming Brook Mine Round Top: Development, Texas Round Top Halleck Creek: Development, Wyoming Halleck Creek Bear Lodge: Development, Wyoming Bear Lodge Elk Creek: Development, Nebraska Elk Creek Chemours Offerman: Other commodity with rare earth by-product or plan, Offerman, Georgia. Offerman mineral separation plant and the Jesup and Nahunta mines; monazite is a co-product; the pin marks Offerman Chemours Offerman Chemours Starke: Other commodity with rare earth by-product or plan, Starke, Florida. Mine and mineral separation at Starke; monazite is a co-product Chemours Starke Vulcan Elements Benson: Processing / manufacturing (planned), Benson, North Carolina. About $1B plant; 10,000 t/yr target; announced Nov 2025 Vulcan Elements Benson Aclara Resources Vinton: Processing / manufacturing (planned), Vinton, Louisiana. $277M plant; construction-ready by end of 2026; completion targeted end of 2027 Aclara Resources Vinton ElementUSA Gramercy: Processing / manufacturing (planned), Gramercy, Louisiana. DOE selection for award negotiation ($67M reported) for a plant of 150 to 1,000 t/yr ElementUSA Gramercy HyProMag USA Dallas-Fort Worth: Processing / manufacturing (planned), Dallas-Fort Worth, Texas. About 125,000 sq ft leased; commissioning targeted mid-2027; site coordinates approximate HyProMag USA Dallas-Fort Worth Peabody Gillette: Processing / manufacturing (planned), Gillette, Wyoming. Planned pilot at the Rawhide coal mine for a mixed rare earth concentrate; no capacity or date published; DOE selected it for award negotiation in Jul 2026 Peabody Gillette MP Materials Northlake: Processing / manufacturing (building), Northlake, Texas. Construction under way; commissioning from 2028; more than $1.25B MP Materials Northlake USA Rare Earth Blacksburg: Processing / manufacturing (building), Blacksburg, South Carolina. Groundbreaking Sept 9, 2026; commissioning 2028 USA Rare Earth Blacksburg ReElement Technologies Marion: Processing / manufacturing (building), Marion, Indiana. Capacity added in stages from Q3 2026 through Q1 2027; stated targets differ between releases ReElement Technologies Marion Ucore Rare Metals Alexandria: Processing / manufacturing (building), Alexandria, Louisiana. Commissioning of a RapidSX demonstration plant began Apr 20, 2026; first full machine due H1 2027 Ucore Rare Metals Alexandria White Mesa Mill: Processing / manufacturing (operating), Utah White Mesa Mill MP Materials Fort Worth: Processing / manufacturing (operating), Fort Worth, Texas. Began making NdFeB magnets in Dec 2025 MP Materials Fort Worth USA Rare Earth Stillwater: Processing / manufacturing (operating), Stillwater, Oklahoma. Phase 1a commissioned Mar 2026; ramping to 600 t/yr by Q4 2026 USA Rare Earth Stillwater USA Rare Earth Wheat Ridge: Processing / manufacturing (operating), Wheat Ridge, Colorado. Produced Dy and NdPr oxide samples from Round Top material in Jul 2026 USA Rare Earth Wheat Ridge Vulcan Elements Research Triangle Park: Processing / manufacturing (operating), Research Triangle Park, North Carolina. Opened Mar 31, 2025; about 10 t/yr of sintered NdFeB magnets (Oct 2025) Vulcan Elements Research Triangle Park Noveon Magnetics San Marcos: Processing / manufacturing (operating), San Marcos, Texas. Uses recycled magnet feedstock Noveon Magnetics San Marcos eVAC Magnetics Sumter: Processing / manufacturing (operating), Sumter, South Carolina. Opening ceremony Jul 15, 2026; nameplate about 2,000 t/yr eVAC Magnetics Sumter Phoenix Tailings Exeter: Processing / manufacturing (operating), Exeter, New Hampshire. 500 t/yr capacity, initial 200 t/yr (company-reported) Phoenix Tailings Exeter Cyclic Materials Mesa: Processing / manufacturing (operating), Mesa, Arizona. Opened Sept 9, 2026; up to 25,000 t/yr of material Cyclic Materials Mesa REalloys Euclid: Processing / manufacturing (operating), Euclid, Ohio. Operating metallization capability (company-reported) REalloys Euclid Rare Element Resources Upton: Processing / manufacturing (operating), Upton, Wyoming. Demonstration plant started Mar 24, 2026; delays reported Jun 2026 Rare Element Resources Upton Mountain Pass: Producing rare earths, California Mountain Pass
Mines and projects ProducingOther commodityDevelopmentExploration Plants operatingbuildingplanned
States with a page
22Site, company or pilot tracked
States with a mine or project
11
States with a plant or mill
12
Sites on the map
35Mines, projects, mills and plants

Which US states have rare earth mines and plants?

11 states have a tracked rare earth mine or project (Wyoming, Texas, California, Utah, Nebraska, Alaska, Montana, Idaho, Arizona, Florida and Georgia), and 12 states have a plant or mill. 3 more states appear because a company or pilot is based or active there. Each name opens the state page.

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22 of 22 shown
22 US states where the directory tracks a rare earth site, company or pilot
StateMines and projectsPlants and millsCompanies and pilotsWhat is there
Texas145Round Top, Independence magnet plant, 10X magnet campus, San Marcos magnet plant and Dallas-Fort Worth recycling and manufacturing hub
Wyoming324Brook Mine, Halleck Creek, Bear Lodge, Upton demonstration plant and Rawhide pilot processing facility
Louisiana033Louisiana Strategic Metals Complex, Port of Vinton separation facility and Gramercy bauxite residue project
South Carolina023Blacksburg magnet and metal campus and Sumter NdFeB plant
Arizona112La Paz and Mesa recycling facility
California202Mountain Pass and Colosseum
Montana202Sheep Creek and Lemhi Pass
Utah112Silicon Ridge and White Mesa Mill
Idaho201Lemhi Pass and Diamond Creek
North Carolina021Research Triangle Park magnet facility and Benson magnet campus
Colorado017Wheat Ridge demonstration facility
Oklahoma013Stillwater magnet plant
Indiana012Marion advanced technology center
Nebraska102Elk Creek
Alaska101Bokan Mountain
Florida101Starke mineral sands operation
Georgia101Georgia mineral sands operation
New Hampshire011Exeter metal refinery
Ohio011Euclid metallization facility
New York002Arnold Magnetic Technologies and Valor Metals No fixed site on the map
Pennsylvania002Electron Energy Corporation and CONSOL Innovations No fixed site on the map
North Dakota001University of North Dakota No fixed site on the map

Lemhi Pass spans Idaho and Montana and counts in both. A company with sites in several states appears in each. Counts of companies include headquarters, sites and pilots.

Verified Oct 1, 2026

Which states have a historic rare earth deposit but nothing tracked?

Missouri, Illinois and Arkansas have no tracked mine, plant, company or pilot, but the USGS describes a historic or prospect deposit in each: Pea Ridge, Hicks Dome and Magnet Cove. Each has its own page with the USGS record and the activity found since 2024.

  • Missouri: Pea Ridge Washington County, about 97 km southwest of St. Louis. Four rare earth breccia pipes cutting a magnetite and hematite iron orebody, with rare earths in apatite tailings.
  • Illinois: Hicks Dome Hardin and Pope Counties, southern Illinois, in the Illinois-Kentucky fluorspar district. A dome 14.5 km across over an alkaline intrusion, with a thorium and rare earth breccia at depth.
  • Arkansas: Magnet Cove Hot Spring County, south-central Arkansas. Cretaceous alkaline and carbonatite complex (USGS 2002: carbonatite with residual enrichment).

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Rare earth mines, projects and companies in each state

Questions about rare earth by state

Which US state has the most rare earth mines?

Wyoming has the most tracked rare earth mines and projects, with 3: Brook Mine, Halleck Creek and Bear Lodge. None is producing yet. The only active primary rare earth mine in the United States is Mountain Pass in California.

Which states produce rare earths today?

Mountain Pass in California is the only active primary rare earth mine. Plants that separate, make metal or magnets, or recycle are operating in Texas, Utah, Arizona, Oklahoma, South Carolina, North Carolina, Ohio and New Hampshire, and demonstration plants operate in Wyoming and Colorado. Most plants are small, and more are being built.

Which US states make rare earth magnets?

Magnet plants are tracked in Texas, Oklahoma, South Carolina and North Carolina. They include MP Materials in Texas, USA Rare Earth in Oklahoma, eVAC Magnetics in South Carolina, Noveon in Texas and Vulcan Elements in North Carolina, with more planned.

Why are some states listed with only companies or pilots?

New York, Pennsylvania and North Dakota have no tracked mine or plant on the map. They appear because a company or pilot is based or active there: a headquarters, a Department of Energy coal-waste pilot or a university.

Are rare earths found in other states?

Yes. Rare earth occurrences are reported in 19 states (Department of Energy, cited by OSTI). This directory lists the states where a project, plant, company or pilot has been identified, and adds states as it tracks more. Missouri, Illinois and Arkansas have pages for the historic deposits the USGS describes there: Pea Ridge, Hicks Dome and Magnet Cove.

Sources and verification

Each profile lists its sources, a confidence grade and a verification date. Order of authority: official records (SEC filings, agency documents), company documents and technical reports, research papers, then independent press. Syndicated copies and reference works are labeled and are never the only source for a number. Company-reported figures are labeled as such, and non-binding deals are labeled "letter of intent" or "conditional".

Tags show what kind of source each link is. How sources are ranked