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桃源地区与铀成矿有关控矿因素较多,主要为岩体、构造、围岩蚀变控矿。围岩蚀变与铀矿化密切,区内围岩蚀变主要有硅化、赤铁矿化、黄铁矿化、钠长石化、萤石化、碳酸盐化、绢云母化、绿泥石化等。区内的胶状黄铁矿化、浸染状赤铁矿化、紫黑色萤石化以及钠长石化等,可作为主要找矿标志。通过研究来寻找围岩蚀变与铀矿化之间的关系,为找矿提供较好的识别标志。 相似文献
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金鸡金矿主要产于浅变质碎屑岩中的断裂破碎带内,严格受近南北向和北东向断裂破碎带控制。金矿常伴随围岩蚀变,研究围岩蚀变对金矿勘查具有重要意义。总结金鸡金矿,与金矿关系密切围岩蚀变主要有硅化、黄铁矿化和褐铁矿化。本文分析讨论了金鸡金矿的围岩蚀变类型、期次、分带性,同时对围岩蚀变与金矿化的关系进行了讨论。 相似文献
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通过黄冈市矿产资源开发利用现状调查和研究,找出了开采和管理中存在的主要问题。这些问题是牵涉矿业生存和发展的大事大非问题,必须从地质找矿、矿产资源合理开发利用、矿山地质环境保护和矿政综合监督管理四个方面进行统筹解决。只有与时俱进,改革创新,转变矿业经济发展方式,整装勘查,科技创新,节约集约综合利用矿产资源,建设绿色矿山,打造和谐矿区,才能找出、管住和用好矿产资源,才能保护好矿山地质环境,才能实现矿业经济全面、协调、健康和可持续发展。 相似文献
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China’s Belt and Road Initiative in Support of the Resourcing Future Generations Program 总被引:1,自引:0,他引:1
The Resourcing Future Generations (RFG) program is a global strategy proposed by the International Union of Geological Sciences to meet global demand for natural resources. The Belt and Road (B&R) initiative of China provides a great opportunity for promoting the RFG across much of the Eurasian continent. The countries covered by the B&R initiative are mostly low-income economies. With rapid developments of economy and infrastructure construction, these countries are set to have huge demands for mineral resources in the future. However, the proven mineral reserves in this region are too limited, and the region’s overall level of metal recycling is far from optimistic. These countries are expected to have obstacles in meeting future demands. However, the regional Tethyan metallogenic domain and Central Asia metallogenic district are key areas for new discoveries of mineral resources, possessing a variety of mineral resources with a positive prospecting potential. The B&R initiative of China provides favorable opportunity for mutual beneficial cooperation to improve regional exploration and prospecting through geological mapping, inter-comparison study on Tethyan metallogenic domain, joint assessment of mineral resource potentials, joint training of geological engineers and workers and building information systems. 相似文献
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On the Vantage Peak nunatak in the Juneau Icefield of southeastern Alaska, grus and soils display evidence of extensive chemical alteration in a self-evidently periglacial environment. Accompanying the alteration of bedrock to grus and soil is a decrease in grain size. Grus is dominated by very coarse sand while the soils are predominantly fine sand. Grain-size reduction is attributed primarily to mineral grain dissolution. Total chemical analyses show that alkali earths (calcium and magnesium) and alkalis (sodium and potassium) are lost as weathering progresses, while silicon and iron increase relative to resistant elements. Secondary clay minerals present in the grus and soils appear to have been derived from clay-size primary minerals. Vermiculite is the principal secondary clay mineral and appears to have formed by the alteration of biotite. Scanning electron microscopy shows that quartz and feldspars are primarily weathered by dissolution with no evidence of feldspar transformation to secondary clays. Superimposed on these weathering transformations is evidence of eolian processes. Chemical weathering processes, notably dissolution and clay mineral transformation, do occur in the periglacial environment of the Vantage Peak nunatak and are clearly an important component of the periglacial geomorphic process suite. 相似文献
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Stimulated by the exceeding progress of information technology, the development of mineral exploration has entered a new period of digitization and quantification. The “three components” approach of mineral prediction is suggested as a new approach to the “digital mineral prospecting,” which is based on the geoanomaly analysis, directed by the research on the diversity of mineralization and on the spectrum of mineral deposits. Close combination of these three aspects of quantitative study makes a new starting point to the digital prospecting. In this paper, the basic theories of the “three components” approach of mineral prediction are discussed. In addition, based on the new achievements in the studies on the prediction and assessment of solid minerals and gas–oil resources, we have centered our discussion on the thought of analysis of geoanomaly evolution and on the “5P” method for approaching the target area in the “three components” approach of mineral prediction. 相似文献
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三维矿床模型及可视化研究是我国"数字化矿山"进程中的热点,本文应用数字化矿山软件Surpac,针对某钼矿66个钻孔数据进行三维矿床模型的构建,最终在三维可视化模型的基础上进行了钼矿资源储量估算。与传统计算方法对比结果表明,Surpac软件三维模型所计算的结果准确可靠,且该模型可依据品位的变化进行矿体的动态圈定。 相似文献