The Mineral Mountains are a 28 miles (45 km) long mountain range located in eastern Beaver and southeastern Millard counties in southwestern Utah. The Escalante Desert is to its southwest, the Black Rock Desert volcanic field and the Sevier Desert are to the north and northwest. The Pavant Range and Tushar Mountains lie to the east. The west side of the range borders the small with the Star Range beyond. Beaver River flows past the south and west sides of the range. The river is impounded as Minersville Reservoir adjacent to the southeast margin of the range.