Cultural Cooperation "' with the American Republics Department of State GEOLOGIC INVESTIGATIONS IN THE AMERICAN...minerals in most deposits are quartz and carbonates; fluorite and barite are found in some deposits, and silicate...mining machinery. INTRODUCTION The Andean mineral province, a major metallogenic area of the world, comprising...including Peru, Bolivia, and northern Chile and Argentina. Metals present in quantity are copper, lead,...Publicas, and the Geological Survey, United States Department of the Interior. The contribution of the United |