The Mountain Pass Rare Earth Mine and Processing Facility, owned by MP Materials, is an open-pit mine of rare-earth elements on the south flank of the Clark Mountain Range in California, 53 miles (85 km) southwest of Las Vegas, Nevada. In 2020 the mine supplied 15.8% of the world's rare-earth production. It is the only rare-earth mining and processing facility in the United States. It is the largest single known deposit of such minerals.
The Mountain Pass rare earth mine is an open-pit mine of rare earth elements (REEs) in southeastern California near the Nevada border. REEs are vital for the electronics industry, auto manufacturing, and a wide range of other high-tech products.
An aerial photograph of the Mountain Pass Rare Earth Mine & Processing Facility in San Bernardino County, California.