Research On Mineralogical Characteristics?Occurrence State Of Uranium And Metallogenic Mechanism Of Shuishi Deposits In The South Of Zhuguang Uranium Mining Area

Shuishi uranium deposit is located in the southern Zhuguang mountain granite rock mass near the center.Outcropped lithology is mainly yanshan period coarse grained porphyritic biotite granite and a small amount of fine grained biotite granite rock mass,such as fracture structure.Ore bodies are strictly controlled by structure,basic in fracture zone in output in the form of a group of vein.The author with the help of schools to provide an effective modern testing technology research the main ore structure,the ore types,as well as the existence form of uranium in ore,analysis of the ore metallogenic theory,get the following conclusion:(1)Shuishi uranium deposit under tectonic control strictly,is located in the north east,east-west and the north west of the three large deep fault belt,where the north east,north west and north and south to three groups of fracture structure is most important,the main intersection compound area is the wide area aof the output of uranium deposits(2)The ore specimens and samples of Shuishi uranium ore deposit were identified by electron microscopyusing,electron probe,artificial heavy concentrate,X-ray diffraction,laser Raman of modern testing technology.It is found that the uranium ore has a fractured granite texture and a massive structure.The main uranium mineral in Shuishi uranium ore deposit is asphalt uranium.uranium stone content is slightly lower.Stone pulp with is part of the uranium mineral of non-metallic mineral,feldspar,fluorite,etc;Closely associated with uranium mineralization in the metal mineral galena,pyrite,etc.,in addition,mixed with a small amount of accessory minerals,such as apatite,rutile,etc.(3)Uranium content in the form of net vein,fine vein occurrence between the cleavage of other minerals or mineral edge,also has a uranium ore in the form of dot shape growth in other minerals,or replacement of pyrite show skeletal shape or around the pyritedeposits into edge shape.The occurrence state of U mainly exists in the form of independent uranium ore,is mainly asphalt uranium.Second a small amount isomorphism of the occurrence state of U existed in auxiliary mineral and occurrence state of U is adsorption form of disperse.(4)Shuishi uranium metallogenic model of uranium deposits are as follows:uranium-producing rock mass in the ore,yanshanian tectono-magmatic activities provide metallogenic heat source and dynamic conditions of crustal extensional thinning,made from atmospheric precipitation or the mantle fluid in the way of the indo-chinese epoch uranium rich rock mass,the rich uranium by extraction of uranium in rock mass in the fluid,the formation of rich uranium ore-forming hydrothermal,when rich uranium hydrothermal through the precipitation of metallogenic geochemical barrier.