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通过对贵州都匀牛角塘富镉锌矿包裹体的研究，发现有一定数量的有机包裹体。该矿床与密西西比河谷型 (MVT)矿床相似，均属于 Na＋-Ca2＋-K＋-Mg2＋-Cl－体系，同时，两者在成矿流体温度、盐度和密度方面也有一定差别。该矿床成矿流体组分与油田卤水相似，仅 Ca2＋和 Mg2＋含量偏高，这可能与晚阶段的碳酸盐化有关。笔者认为，成矿流体可能与麻江古油藏的油田卤水有关，正是由于油田卤水携带了 Cd和 Zn等成矿物质，在矿区与温度和盐度较低的富含 Ca2＋和 Mg2＋的流体混合，使得 Cd和 Zn等成矿物质沉淀并富集成矿，同时形成方解石和白云石。从成矿早阶段到晚阶段，成矿流体的氧逸度逐渐升高，流体的 pH值（介于 6.40～ 7.30之间）也逐渐升高，说明成矿流体性质为偏碱性弱还原。成矿流体由油田卤水演变而来，其中和 Cl－含量较高，且 Cl-> F－， Na＋ > K＋，说明成矿物质主要以 HS－和 Cl－的络合物和有机络合物形式搬运和迁移。
Through the study on the inclusions of Ni-chaetite-rich cadmium-zinc deposits in Duyun, Guizhou, a certain amount of organic inclusions were found. The deposit is similar to the Mississippi Valley (MVT) deposit and belongs to the Na + -Ca2 + -K + -Mg2 + -Cl- system. At the same time, there are some differences in the temperature, salinity and density of ore-forming fluids. The metallogenetic fluid composition of this deposit is similar to that of oilfield brine, with only high contents of Ca2 + and Mg2 +, which may be related to carbonation in late stage. The authors believe that the ore-forming fluid may be related to the oilfield brines of the Majiang ancient reservoir. It is because the oilfield brines carry metallogenic materials such as Cd and Zn. In the mining area, with relatively low temperature and salinity rich in Ca2 + and Mg2 + Mixed, making the deposition of Cd and Zn ore-forming materials and enrichment of mineralization, while forming calcite and dolomite. From the early stage to the late stage, the oxygen fugacity of the ore-forming fluid gradually increases, and the pH value of the fluid (between 6.40 and 7.30) also gradually increases, indicating that the ore-forming fluid is slightly alkaline. The ore-forming fluid evolved from oilfield brine with high Cl- content and Cl-> F- and Na +> K +, indicating that ore-forming materials are mainly in the form of complexes of HS- and Cl- and organic complexes Handling and relocation.