Geological characteristics and origin of the Mogou fluorite deposit in Fangcheng County,Henan Province
The Mogou fluorite deposit of Fangcheng County,residing in the Neoproterozoic Meiyaogou Formation,is a crucial part of the fluorite metallogenic belt in southern Henan Province.Based on the analysis of the geological characteristics of the Mogou fluorite deposit,this study conducted petrographic and petrogeochemical studies to define the source of ore-forming materials and probe into the genetic mechanism of the fluorite deposit.The results show that the fluorite ore body is veined or lenticular,with mineralization-related alterations composed of silicification,fluorite and sericite alterations.Its ore structures are primarily massive,followed by banded,striped,and brecciated types.The chondrite-normalized rare earth element distribution pattern of the fluorite ore body is similar to that of the Meiyaogou Formation marbles and the Yanshanian porphyritic plagiogranites,suggesting a genetic relationship.The possible ge-netic mechanism is that the F-enriched ore-bearing hydrothermal liquids intruded along the interbedded fault and reacted with the sur-rounding rocks to form the fluorite ore/mineralized body.The deposit belongs to the epithermal filling type along the interbedded struc-ture.
万方数据
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