采礦專業(yè)外文翻譯---西昆侖地區(qū)卡蘭古mvt型鉛鋅礦床成礦作用和成礦物質(zhì)來(lái)源探討(文件)
【正文】 ing that the tectonic movement is directly controlled mineralization. (3) the Tamu mineralization geological conditions, the main mineralization characteristics and orecontrolling factors are very similar to the Mississippi Valleytype leadzinc [7,8] 4 lead, sulfur isotopes and rare earth elements analysis In this study, the Pb isotopic ratios (Table 5): 206PbP204 Pb ~ ,207 PbP204Pb the ~ ,208 PbP204Pb to to , value of to L value of to , for ThPU ~ , the calculated surface age of 461 to 481 Ma (Early Devonian 438 to 410mA). Indicating that the mineralization process into minerals may be derived from the former Devonian strata. TMB13, 5 and 11 three parties galena sulfur isotope test, , and (Yichang Institute of Geology Mineral Resources measured test accuracy ), and oilfield brines sulfur isotopic position similar, and organic sulfur, sulfate sulfur, there are significant differences, reflecting the oilfield brines and deep brine mixing characteristics. By the rare earth element analysis of data derived rock (ore) the Stone P chondritenormalized distribution mode (Figure 2) show that the rare earth content of the surrounding rock and ore is basically the same, with a weak negative Eu anomaly and significant negative Tm exception, the light rare earth elements relative to heavy rare earth enrichmentforming materials from the formation [10]. 5 Conclusion 7 (1) Tamu leadzinc deposits into mineral Pb, Zn es mainly from the former Devonian, Devonian Carboniferous strata only play the role of leadzinc mine host rocks. (2) The sulfur isotope position reflects the oilfield brines and deep brine mixed feature largescale hot brine migration, circulation, transformation, and has played an important role in the mineralization. The trace element geochemistry of ore and rock. (3) mine breccia and brecciated ore developed, indicating the direct control of the tectonic movement of mineralization. (4) Hercynian, the Himalayan region39。 mineral roughly generate the following order: calcite, dolomite, pyrite, galena, sphalerite. (3) wallrock alteration dolomitization, calcite, followed by silicification. Dolomitization can be divided into three categories: a fine mediumgrained dolomitized, particle size of to mm, granular structure, layered structure and mineralization are closely related。 often mixed coarse and fine, lead, zinc closely associated. Metallic minerals are mainly galena, sphalerite, pyrite。 second lithologic gray and black calcareous shale。Tamu leadzinc deposit。 (6)塔木礦床的深、邊部 ,尚未進(jìn)行工程控制 ,后期構(gòu)造的破礦、成礦作用還有待于研究 ,尚有較大的 找礦空間存在。 (3)礦區(qū)內(nèi)角礫巖和角礫狀礦石發(fā)育 ,說(shuō)明構(gòu)造運(yùn)動(dòng)對(duì)礦化的直接控制。由稀土元素分析數(shù)據(jù)得出巖 (礦 )
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