NDLI: Uranium Deposits of Erlian Basin (China): Role of Carbonaceous Debris Organic Matter and Hydrocarbon Fluids on Uranium Mineralization

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Uranium Deposits of Erlian Basin (China): Role of Carbonaceous Debris Organic Matter and Hydrocarbon Fluids on Uranium Mineralization

Content Provider	MDPI
Author	Qiu, Lin-Fei Li, Xi-De Liu, Wu-Sheng Hu, Bao-Qun Gao, Long He, Zhong-Bo
Copyright Year	2021
Description	The relationship of sedimentary organic matter, oil-gas and sandstone-type uranium (U) deposits is the key problem of U-mineralization. Whether migrate hydrocarbons participate in U-mineralization is still a controversy. Typical U deposits of the Erlian Basin in northeast China have been investigated through detailed petrography, mineralogical, micro spectroscopic, organic geochemical and C-isotope studies. Petrographic observations, Microscopic Laser Raman Spectroscopic, Infrared Spectroscopic and Scanning Electron Microscope analyses indicated there are three types of organic matter (including carbonaceous debris and migrated hydrocarbons). A significant amount of uranium was associated with pyrites, clay minerals and carbonaceous debris organic matter, either coexisted with hydrocarbon fluids. There are at least two stages mineralization events, stage I is related to sedimentary organic matter (syngenetic pre-enrichment stage), and stage II is related to mobile hydrocarbon fluids (main mineralization stage). Therefore, our results support that migrated hydrocarbons were involved as a reducing agent for the main uranium mineralization after synsedimentary mineralization.
Starting Page	532
e-ISSN	2075163X
DOI	10.3390/min11050532
Journal	Minerals
Issue Number	5
Volume Number	11
Language	English
Publisher	MDPI
Publisher Date	2021-05-18
Access Restriction	Open
Subject Keyword	Minerals Geology Carbonaceous Debris Migrated Hydrocarbon Uranium Mineralization Sandstone-type Uranium Deposit
Content Type	Text
Resource Type	Article

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