The Yunnan Luchun County Damajianshan Copper Polymetallic Metallogenic Prediction

The position of the tectonics is in Mojiang-Lvchun fold belt which is the southeast department of Tanggula-Changdu-Lanping-Simao fold belt. In the region, the exposed stratum is not continuous, mostly; there are Paleozoic stratum and Mesozoic stratum. there are a set of Silurian low-grade regional metamorphic rock in prospecting area, the lithology are alternate with sandstone and slate, the original rock is a set of shallow water-the Gulf muddy-clastic-rock; There are quartz Porphyry and lamprophyre intrusion in the late Yanshan-period, wall rock metamorphose have silicification, potassium, sericite, pyrite, chlorite, tourmaline.The prospecting area is between the positive and negative gravity anomaly, that lies in steep slope of Moho isobath, content of Cu, Pb, Zn is relatively high in regional stratum, it is perspective for prospecting; There are sandstone, slate, metamorphic wall rock and ore, the difference of their electrical parameter is obvious, so it is a basis for geophysical prospecting.By geophysical and geochemical survey, find the number of geophysical anomaly be 11; geochemical anomaly be 27, in which anomaly of copper be 6, lead be 9, arsenic be 6, silver be 2, tungsten be 2, antimony be 3. by analyzing, it is believed that the geochemical anomaly depart from the mineralized body as a result of displacement of soil; so, the target is fixed on mostly by geophysical anomaly, and be divided into three types for A, B and C; by referencing the geochemical anomaly and geological character,which there be geophysical and geochemical anomalies and signs of mineralization is divided into Class A; there be geophysical and geochemical anomalies is Class B, only geophysical anomaly is Class C; Accordingly, the Class A is 3, B is 6, C is 2.