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铊是典型的低温成矿金属元素。在成矿地球化学过程中,它与贵金属Au,Ag以及Hg,As,Sb元素和有机质有着密切的联系,尤其在低温热液浸染型金矿中(如美国卡林金矿、麦克劳林金矿,以及我国西南滇、黔、桂及其邻省地区产出的金矿)普遍含有较高的Tl,Hg,As,Sb等元素的富集异常。电子探针分析表明,黔西南单矿物辰矿中铊含量可达质量分数为0.617(6170×10~(-6)),局部地段见有铊汞硫盐矿物及与汞矿共生的富铊矿体产出。研究表明Tl,Hg,As,Sb等元素的共存特征及其相应的矿物组合是寻找勘探浸染型贵金属矿床的最佳指示标志。因此加强Hg,Tl,As,Sb体系的矿物学和地球化学行为的基础研究,具有十分重要的现实意义。
Thallium is a typical low-temperature metallogenic metal element. In the process of metallogenic geochemistry, it is closely related to the elements Au, Ag, Hg, As, Sb and organic matter, especially in low temperature hydrothermal disseminated gold deposits such as Carlin Gold in the United States, Mines, and the gold mines produced in southwestern Yunnan, Guizhou, Guangxi and their neighboring provinces) generally contain high concentrations of Tl, Hg, As, Sb and other elements. Electron microprobe analysis showed that the content of thallium in the single ore of southwestern Guizhou Province was up to 0.617 (6170 × 10 -6), and some thallium, mercury, sulfur and salt minerals and the thallium-rich ore Body output. The results show that the coexistence of Tl, Hg, As, Sb and their corresponding mineral assemblages are the best indications for the prospecting of disseminated precious metal deposits. Therefore, it is very important to study the mineralogical and geochemical behavior of Hg, Tl, As and Sb systems.