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...本次美国地质调查局（U.S. Geological Survey, USGS）发布的数据集，收录了美国境内仅有的相关点位的描述信息，涵盖矿产区域、矿点及矿山……