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小龙潭矿区地处扬子地块西缘丽江台缘褶皱带与滇中中生代盆地地体衔接部位宾川-程海断裂东侧,目前仅有岩相学和岩石地球化学方面的研究(何明勤等,2004),对其岩石成因、成岩环境、成岩时代及动力学背景等的认识还不清晰,严重制约了对成岩成矿作用的理解和下步找矿的方向。本文以矿区近期钻孔所揭露的含矿斑岩为研究对象,开展了系统的岩石学、岩相学、岩石地球化学及成岩年
Xiaolongtan deposit is located at the junction of the fold belt of Lijiangtai margin on the west margin of the Yangtze block and the Mesozoic mid-Cenozoic basin in the east of Binchuan-Chenghai fault. At present, only the study of lithofacies and lithogeochemistry (He Mingqin, 2004). The understanding of rock genesis, diagenetic environment, diagenetic age and dynamic background is not clear enough, which has severely restricted the understanding of diagenesis and metallogenic process and the direction of next prospecting. In this paper, the ore-bearing porphyries exposed by recent drilling in the mining area are taken as the research object, and the systematic petrology, petrography, lithochemistry and diagenesis