Application of Comprehensive Geophysical Exploration Method in Searching for Concealed and Semi Concealed Fluorite Mines
Fluorite deposits in the northern Hebei region,all low-temperature hydrothermal typesare closely related to the structures.During the general survey of a fluorite deposit in the north of Hebei province,the active carbon radon measurement method was used to delin-eate the location of fault structures in the hidden and semi-hidden areas.The distribution range and vertical distribution characteristics of the alteration zone of fluorite mineralized body were determined by induced polarization method.The results show that the fluorite mineralized body is located in the secondary fault near the main fault.And the radon concen-tration in the secondary fault is relatively low,because the fluorite is blocking the radon mi-gration channel.However,the active carbon radon measurement method still has a good indi-cation to the main fault structure.Therefore,the active carbon radon measurement method is used to locate the main fault structures.The distribution of mineralized alteration zones on the earth's surface can be effectively delineated by induced polarization(IP)middle gradient section or area measurement.IP sounding inversion can directly reflect the vertical distribu-tion characteristics of mineralized bodies in the deeppart.The integration of active carbon ra-don measurement and induced polarization method,together with other geological engineer-ing methods,has achieved remarkable results in the search for concealed and semi-concealed low-temperature fluorite deposits in northern Hebei province.
fluorite orelow temperature hydrothermal solutionconstructionradon meas-urement with activated carboninduced polarization
NETL
NSTL
万方数据
维普
