| 我国铜矿床主要类型及找矿方向初探 |
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| 引用本文：孙海田,韩发,葛朝华.1992.我国铜矿床主要类型及找矿方向初探[J].地球学报,13(1):25-41. |
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| 中文摘要:本文根据国内外大量铜矿资源数据,详细地分析了我国铜矿资源基本状况和不同类型铜矿床特征。运用铜矿床品位—吨位模型,来反映不同矿床类型规模与品位之间相互关系及总体变化趋势。结合我国铜矿资源形成地质背景和时空分布特征,提出了找矿方向中应注意的几个问题。 |
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| MAJOR TYPES OF COPPER DEPOSITS AND DIRECTION IN COPPER PROSPECTING IN CHINA |
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| Abstract:The Cu-deposits to be known very well in China are mainly characti- rized by large total mineral reserves, low grade, a large numbers of mineral deposits of which a few can be economically mined. The low grade Cu-deposits of porphyry and Cu-Ni sulfide types are near 50% of the total reserves of Cu-deposits, but now, very little of them can be exploited economically. The Cu-deposits of comparative high grade or abundant associated elements, for in stance, volcanogenetic, marine sedimentary, skarn and poly-genetic Cu-deposits are the essencial objectives to be mined. Seeking the Cu-deposits which can be economically mined is one of the most important tasks in the reconnaissance survey and exploration works at present time when a lot of Cu material is imported every year because the supply of Cu-ore production has fallen short of demand for many years. The distribution of the Cu-deposits concentrates on nine districts, within which the occurrence of Cu-deposits is controlled by the special geological environment and time, so those concentrating areas are the most important targets to look further for some types of Cu-deposits, for instance: volcanogenetic Cu-deposits in Archaean and Early and Late Proterozoic eugeosyncline areas, marine sedimentary Cu-deposits in Middle Proterozoic miogeosyncline areas within Huabei and Huanan platforms or their edges, volcanogenetic Cu-deposits in Early Proterozoic and Mesozoic eugeosyncline orogenic zones; skarn or poly-genetic Cu-deposits in Mesozoic and Cenozoic tectonic magmatic active belts. |
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