Alkalic Complexes

Alkalic complexes in Colorado’s Wet Mountains and the Powderhorn district near Gunnison, Colorado contain carbonatite and a variety of other exotic rock types. Both complexes contain abundant rare earth elements. Indeed, Powderhorn (also known as Iron Hill) contains the nation’s largest volumetric deposit of rare earths as well as the world’s largest titanium deposits. View Iron Hill with Google Maps.

Iron Hill near Powderhorn, Colorado – Photo courtesy USGS


Map of the Powderhorn Mining District.

More information about the valuable mineral deposits of alkalic complexes: Alkalic Igneous Rocks of Colorado and Their Associated Ore Deposits.

References from the USGS

Alkaline Rock Complexes in the Wet Mountains Area, Custer and Fremont Counties, Colorado

Iron Hill (Powderhorn) Carbonatite complex, Gunnison County, Colorado – A Potential Source of Several Uncommon Mineral Resources