The Critical Minerals Initiative of the US Geological Survey's Mineral Deposit Database Project: USMIN. - Mauk, Jeffrey L.; Karl, Nicholas A.; San Juan, Carma A.; Knudsen, Liam; Schmeda, Germán; Forbush, Clayton; Van Gosen, Bradley S.; Mullins, Morgan; Scott, Patrick (Mining, Metallurgy & Exploration, 2021)