Abstract:In response to the exploration difficulties of hidden fluorite deposit in shallow coverage areas, a "geological physical chemical" collaborative exploration system has been constructed innovatively, and high precision magnetic surveying, induced polarization, and soil geochemical exploration technologies have been integrated to reveal geophysical geochemical response characteristics of hidden ore bodies. Through high precision magnetic survey, negative magnetic anomaly areas have been circled, and polarization bands have been identified through induced polarization gradient. Combining with fluoride calcium anomaly tracking, 5 target areas have been accurately delineated in Quaternary coverage area of Fangcheng county. It is revealled that the buried depth of the ore body is 36.5~52.3m, and the thickness is 2.6~5.2m. It is confirmed that there is a spatial coupling law between physical and chemical exploration anomalies and the concealed ore body. Geophysical and geochemical characteristics of fluorite deposits in tectonic altered rock types have been revealled. It is proposed that comprehensive geophysical methods and complementary geochemical techniques can effectively suppress ambiguity. This achievement will provide a technical solution for the exploration of concealed fluorite deposits in shallow coverage areas, and has important demonstration significance for the exploration of similar deposits.