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文章通过K_Ar同位素年龄 ,氢、氧、硫、铅等同位素测试和流体包裹研究 ,结合红十井金矿床的地质、矿区岩石化学、微量元素及稀土元素地球化学特征 ,探讨了红十井金矿床含金建造与金矿关系及矿床成因。研究表明红十井金矿床为晚古生代裂谷带火山岩区受韧性剪切带控制的中_低温热液矿床 ,矿体赋存于中石炭统玄武 (玢 )岩及凝灰质砂岩组成的含金建造内 ,成矿物质主要来源于含金建造 ,矿化以蚀变岩型和石英脉型为主。成矿年龄为2 0 9～ 2 6 7Ma。成矿流体为岩浆水、玄武 (玢 )岩和凝灰质砂岩的变质水、建造水和大气降水的混合溶液 ,δD为 - 114.6‰～ - 6 8.8‰ ,δ18OH2 O变化为 - 2 .47‰～ 5 .91‰。成矿温度为 115～ 381℃ ,成矿压力为 471.8× 10 5～ 6 75 .9× 10 5Pa ;流体盐度w(NaCleq)为 2 .18%～ 16 .77% ,平均 7.79% ,流体属中_低盐度、H2 O_CO2 体系。
Based on the isotopic test of isotope ages of K_Ar, isotopes such as hydrogen, oxygen, sulfur and lead, and fluid inclusions, combined with geology, petrochemistry, trace elements and REE geochemical characteristics of Hongshuijing gold deposit, Relationship between Gold - bearing Construction and Gold Deposit and Its Genesis. The study shows that the Hongshuijing gold deposit is a medium-low temperature hydrothermal deposit controlled by ductile shear zone in the Late Paleozoic rift zone volcanic rocks. The ore body is hosted in the sediments of the Carboniferous basalts (玢) and tuffaceous sandstones Within the construction, the ore-forming materials mainly come from the gold-bearing construction, and the mineralization is dominated by altered rock type and quartz vein type. Metallogenic age is 290 ~ 267Ma. The ore-forming fluid is metamorphic water of magmatic water, basaltic rock and tuffaceous sandstone. The mixed solution of water and atmospheric precipitation is constructed. The δD is -114.6 ‰ -6.8 ‰ and the δ18OH2 O is -2.47 ‰ ~ 5 .91 ‰. The metallogenetic temperature is 115 ~ 381 ℃, and the metallogenetic pressure is 471.8 × 10 5 ~ 6 75 .9 × 10 5 Pa. The fluid salinity w (NaCleq) is 2.18% ~ 16.77% with an average of 7.79% Medium _ low salinity, H2 O_CO2 system.