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本文研究了中甸弧南段红山—红牛铜矿主要夕卡岩矿物石榴石和辉石成因矿物学特征，显示矿区石榴石为钙铁—钙铝石榴石系列，早期多为钙铁榴石，晚期为钙铝榴石。矿区部分石榴石在背散射光下可以观察到明显的环带结构，钙铝榴石和钙铁榴石含量差别越大环带越明显。矿区辉石主要为次透辉石和少量的透辉石，表明夕卡岩早期成矿流体为高温、酸性和高氧逸度环境。矿区黄铁矿强富铁亏硫且Co/Ni > 1，黄铜矿S、Fe和Cu含量较稳定只含有少量的C、Ni和Se，均指示为高温岩浆热液成因。金属硫化物34S众值出现在3.8‰～5.6‰，同时代的石英二长斑岩34S在4.7‰～7.8‰，表明硫主要来自石英二长斑岩。金属矿物和石英二长斑岩铅同位素特征表明，铅主要来自上地壳。石榴石δ18OV-SMOW = 6‰～8.8‰，成矿流体δ18OH20 = 4.6‰～7.8‰，反映成矿流体主要来自岩浆热液，且成矿流体存在明显的沸腾作用。夕卡岩矿体中的方解石和围岩方解石C-O同位素研究，指示块状硫化物中的方解石来自岩浆流体，含有硫化物细脉的围岩大理岩中的方解石来自围岩的再结晶作用。
In this paper, the mineralogical characteristics of the major skarn mineral garnets and pyroxenes in the Hongshan-Hongniu copper mine in the southern arc of Arc Zhongdian are studied. The mineralogical garnets are the series of Ca-Fe-Ca-Al garnet, Algaeite. Part of the garnet in the backscattered light can be observed in the obvious structure of the band, the greater the difference between the content of thealuminum and the content of vetulotron more obvious. The pyroxene in the mined area is mainly composed of diopside and a small amount of diopside, indicating that the early-stage skarn rock-forming fluids are of high temperature, acidity and high oxygen fugacity. The strong iron in the pyrite in the mining area is depleted in sulfur and the content of Co, Ni & gt; 1, and the contents of S, Fe and Cu in the chalcopyrite are relatively stable with only a small amount of C, Ni and Se, indicating the genesis of the high-temperature magmatic hydrothermal. The values of metal sulfide 34S appear at 3.8 ‰ ~ 5.6 ‰, while that of contemporary quartz porphyrocontic 34S is in the range of 4.7 ‰ ~ 7.8 ‰, indicating that the sulfur comes mainly from quartz-bi-porphyry. The Pb isotopic characteristics of the metallogenic minerals and quartz-porphyritic rocks show that the Pb mainly comes from the upper crust. The δ18OV-SMOW = 6 ‰ ~ 8.8 ‰ of garnet and δ18OH20 = 4.6 ‰ ~ 7.8 ‰ of ore-forming fluid indicate that the ore-forming fluid is mainly derived from magmatic hydrothermal fluids, and the ore-forming fluid has obvious boiling effect. C-O isotope studies of calcite and wall rock calcite in skarn orebodies indicate that the calcite in massive sulfides is derived from magmatic fluids and the calcite in the surrounding rock containing sulfide veins is derived from the recrystallization of the surrounding rock.