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六盘山一带早白垩世的“含铜砂岩”,虽于一九五八年群众报矿中就已发现,当年北京地质学院宁夏找矿队进行了检查,圈出一批矿点。六十年代初期,原宁夏地质局宁南地质队、甘肃地质局陇东队,曾对黄草沟、通边一带矿点进行检查评价,对含铜砂岩分布及含矿层位都有进一步认识。然而结论往往是“赋存于一定层位,分布广,层数多,但单层薄,品位低,近期不具工业价值”。尔后十多年来,虽然仍对一些点作过工作,也仅限
Early Cretaceous “copper-bearing sandstones” in Liupanshan have been discovered in the People’s Daily in 1958. At that time, the Ningxia prospecting team at Beijing Institute of Geology had carried out inspections and circled a number of ore deposits. In the early 1960s, the Ningnan Geological Team of the former Ningxia Bureau of Geology and the Gansu Bureau of Geology Gansu Bureau of Geology had conducted inspections and evaluations on the ore deposits in the Huangcaogou and Tongbian areas, further understanding the distribution of copper-bearing sandstone and the ore-bearing beds. However, the conclusion is often “to exist in a certain horizon, widely distributed, the number of layers, but a single thin, low grade, no recent industrial value.” After more than a decade, although still working on some points, but also limited