Tantalum Deposits in the United States

This U.S. Geological Survey (USGS) data release provides the descriptions of the only U.S. sites—including mineral regions, mineral occurrences, and mine...本美国地质调查局（U.S. Geological Survey, USGS）数据发布提供了美国境内仅有的相关场址——包括矿区、矿点以及矿山……的详细描述。