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西范坪斑岩铜矿成矿母岩为黑云母石英二长斑岩，其多相流体包裹体中普遍含有黄铜矿子矿物，成矿流体是一种富含铜（约20000×10-6）的H2O－NaCl体系，具有高温（470－590℃）、高盐度[55％－65％（NaCl）]和沸腾的特征，多相包裹体捕获的最小压力51MPa左右，成矿流体水的氧同位素组成与典型岩浆水一致，黄铁矿的S、Pb同位素表明成矿物质主要来自深源岩浆，所有这些特点吻合于麻岩铜矿的正岩浆模式．多相流体包裹体发育的部位曾经是高盐度高矿质流体活动的地方，这种包裹体是一种良好的找矿标志．
The Xifanping porphyry copper ore-forming parent rock is biotite quartz-quartz porphyry and its multiphase fluid inclusions generally contain chalcopyrite minerals. The ore-forming fluid is a copper-rich ore (about 20,000 × 10- 6) H2O-NaCl system has the characteristics of high temperature (470-590 ℃), high salinity [55% -65% (NaCl)] and boiling. The minimum pressure of multiphase fluid inclusions is about 51MPa, The oxygen isotopic composition is consistent with that of typical magmatic water. The S and Pb isotopes of pyrite indicate that the ore-forming materials are mainly derived from deep-sourced magma, all of which are consistent with the positive magmatic model of the Maqu Mine. The site where multiphase fluid inclusions developed was once where high-salinity, high-mineral fluids were active and this inclusion was a good indicator of prospecting.