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根据红土型镍矿的地理分布和成矿特点,提出红土型镍矿的勘查技术规范和方法以及投资红土型镍矿项目的研判方法。结果表明,红土型镍矿的成矿和分布主要受基岩的蛇纹石化强度、气候因素、断裂发育情况、地形地貌和大地构造环境所控制。对于红土型镍矿项目,一般抽取原工程量的5%~10%进行重采样或钻探验证,核实资料可靠程度和资源量。验证工程布设应遵循系统性原则、均匀性原则、突出性原则和互印证原则。红土型镍矿地质勘查分4个层次:战略靶区筛选(项目建设,约1 000 km2),找矿前景评价(预查,约100 km2),概略性经济评价(普查,约10 km2)和经济性评价(详查或勘探,约1 km2)。
According to the geologic distribution and metallogenic characteristics of lateritic nickel ore, this paper puts forward the exploration technical specifications and methods of lateritic nickel ore and the methods for judging the laterite-type nickel ore project. The results show that the ore-forming and distribution of lateritic nickel ore are mainly controlled by the serpentinization intensity, climatic factors, fault development, topography and geotectonic environment of bedrock. For laterite-type nickel ore projects, 5% -10% of the original project volume is generally sampled for re-sampling or drilling verification to verify the reliability of the data and the amount of resources. Verify the layout of engineering should follow the principle of systematization, uniformity, prominence and mutual proof principles. The geological prospecting of lateritic nickel ore is divided into four levels: strategic target screening (project construction, about 1000 km2), prospecting prospect evaluation (pre-investigation, about 100 km2), general economic evaluation (census, about 10 km2) and Economic evaluation (detailed survey or exploration, about 1 km2).