"Golden triangle"area bordered on Yunnan-Guizhou-Guangxi was one of the most important Carlin-type gold deposits concentration areas.Deep understanding of Carlin-type gold deposits in Guizhou and Guangxi Pro..."Golden triangle"area bordered on Yunnan-Guizhou-Guangxi was one of the most important Carlin-type gold deposits concentration areas.Deep understanding of Carlin-type gold deposits in Guizhou and Guangxi Province had reached through several decades studies,but geological environment was very complex in the southeastern Yunnan,and Carlin-type gold deposits produced in the southeastern Yunnan were different from that of America,few studies were taken there.Based on a large number of field work,studies on the geological characteristics combining with geochemistry characteristics were taken,and analysis the genesis of Laozhaiwan gold deposit.The types of alteration in Laozhaiwan gold deposit were mainly silicification and pyritization,and Gold grade was high when silicification and pyritization were both occurred.It could be caculated that fluid density(g/cm3)varied from 0.7 to 4.9,salinity varied from 0.76%to 0.95%and ore-forming pressure(Pa)varied from 1.81×105 to 49.96×105 according to fluid inclusion test results,showed that Laozhaiwan gold deposit was hypabyssal hydrothermal deposit in low temperature and low salinity.According to composition of fluid inclusion analysis,combining with H-O isotope,made theδD-δ18O figure,showed that the fluid of the deposit rooted in formation water and mixed with meteoric waters later.展开更多
稀土是重要的战略资源,在国际能源、农业、高精度仪器、军事等领域具有不可替代的重要地位。近年来,稀土成矿机理研究和新型稀土找矿已成为全球热点问题。例如,富含稀土深海软泥(Kato et al.,2011),与铝土矿尾矿伴生的稀土(Boni et al.,...稀土是重要的战略资源,在国际能源、农业、高精度仪器、军事等领域具有不可替代的重要地位。近年来,稀土成矿机理研究和新型稀土找矿已成为全球热点问题。例如,富含稀土深海软泥(Kato et al.,2011),与铝土矿尾矿伴生的稀土(Boni et al.,2013)和煤系地层(Dai Shifeng et al.,2016)。在滇黔相邻区晚二叠世宣威组底部,广泛分布的灰白色黏土岩直接覆盖在峨眉山溢流玄武岩顶部.展开更多
基金financially supported by the Program of National Natural Science Foundation of China(No.41372093No.40930423+2 种基金No.41171302)the work item of China Geological Survey(No.12120113036200)higher education quality engineering project of chalcography excellent textbook Construction(No.XJC1105)
文摘"Golden triangle"area bordered on Yunnan-Guizhou-Guangxi was one of the most important Carlin-type gold deposits concentration areas.Deep understanding of Carlin-type gold deposits in Guizhou and Guangxi Province had reached through several decades studies,but geological environment was very complex in the southeastern Yunnan,and Carlin-type gold deposits produced in the southeastern Yunnan were different from that of America,few studies were taken there.Based on a large number of field work,studies on the geological characteristics combining with geochemistry characteristics were taken,and analysis the genesis of Laozhaiwan gold deposit.The types of alteration in Laozhaiwan gold deposit were mainly silicification and pyritization,and Gold grade was high when silicification and pyritization were both occurred.It could be caculated that fluid density(g/cm3)varied from 0.7 to 4.9,salinity varied from 0.76%to 0.95%and ore-forming pressure(Pa)varied from 1.81×105 to 49.96×105 according to fluid inclusion test results,showed that Laozhaiwan gold deposit was hypabyssal hydrothermal deposit in low temperature and low salinity.According to composition of fluid inclusion analysis,combining with H-O isotope,made theδD-δ18O figure,showed that the fluid of the deposit rooted in formation water and mixed with meteoric waters later.
文摘稀土是重要的战略资源,在国际能源、农业、高精度仪器、军事等领域具有不可替代的重要地位。近年来,稀土成矿机理研究和新型稀土找矿已成为全球热点问题。例如,富含稀土深海软泥(Kato et al.,2011),与铝土矿尾矿伴生的稀土(Boni et al.,2013)和煤系地层(Dai Shifeng et al.,2016)。在滇黔相邻区晚二叠世宣威组底部,广泛分布的灰白色黏土岩直接覆盖在峨眉山溢流玄武岩顶部.
