- 责任者：Zhao Xiaodong (Cheugdu Institute of Geology and Mineral Resources ; Chengdu 610081 ; China) ; Li Junmin
- 刊名：Acta Sedimentologica Sinica
- 出版年：2013
- 卷期：31(6)
- 关键词：铝土矿 ; bauxite deposit ; 镓 ; gallium ; 重庆 ; Chongqing
- 页码：p.1022-1030
- 图表：6 illus., 4 tables, 22 refs.
- 分类号：1001
- issnNo：ISSN1000-0550
- isbnNo：CN62-1038/P
Research on the Chongqing Yinkuangyakou bauxite deposit revealed that gallium is generally more than the lowest indicators of comprehensive utilization of industrial, gallium content of the bauxite deposits in the ore-bearing series are distributed, and gallium to AlzO3 weakly positive correlation. Sr/Ba ratio inferred continental sedimentation is main ; the result which the sample Rb/K value is less than the standard marine sedimentary 0. 006 reflected brack- ish transitional zone deposition to freshwater deposition; U/Th ratio range 0.1 to 0.73 and V/Cr ratio from 0.5 to 2.04, which can distinguish ore-bearing rock series are typical oxidizing environment; Seawater may influence ore- bearing rock series during deposition by the calculation of the ratio of Ni/Co found ; Ga/A1 ratio varied from 0.53 to 1.74, the mineralization medium pH changed magnitude smaller ; containing pyrite from the ore-bearing rock mineral assemblage, kaolinite and other minerals can be inferred that the medium is aeidic likely. Chondrite-normalized distri- bution patterns shows LREE enrichment and HREE losses, ~Ce 〈 0.95 （ four samples ） is negative anomalies, 0.95 〈 8Ce 〈 1.05 for normal samples 3, 19 positive anomalies,Eu shows negative anomalies; the overall aqueous media should mainly freshwater basic in oxidizing and acidic environment. The deposit is a continental deposit with the main freshwater to paralic environment.