Textural, mineralogical, and geochemical characteristics of non-volcanogenic Fe–Mn deposit of Motuosala, western Tianshan, northwestern China

2020 ◽  
Vol 13 (9) ◽  
Author(s):  
Zhijun Feng
Keyword(s):  
Geochemical Characteristics ◽  
Northwestern China ◽  
Western Tianshan

Identifying Early Carboniferous bimodal volcanic rocks and geochemical characteristics in the Atengtao Mountain, Yili Block (Chinese western Tianshan)

2018 ◽  
Vol 53 ◽  
pp. 148-162 ◽  
Author(s):  
Zuopeng Wang ◽  
Yongjun Li ◽  
Lili Tong ◽  
Gaoxue Yang ◽  
Pengfei Ren ◽  
...  
Keyword(s):  
Volcanic Rocks ◽  
Early Carboniferous ◽  
Geochemical Characteristics ◽  
Western Tianshan

Geological, geochronological and geochemical characteristics and genesis of the Arqiale skarn Zn-Pb deposit, Western Tianshan, Northwest China

2019 ◽  
Vol 106 ◽  
pp. 79-96 ◽  
Author(s):  
Junfeng Dai ◽  
Chunji Xue ◽  
Guoxiang Chi ◽  
Haiqiang Ji ◽  
Xiaobo Zhao ◽  
...  
Keyword(s):  
Northwest China ◽  
Geochemical Characteristics ◽  
Western Tianshan

The Carboniferous Shikebutai Iron Deposit in Western Tianshan, Northwestern China: Petrology, Fe-O-C-Si Isotopes, and Implications for Iron Pathways

2019 ◽  
Vol 114 (6) ◽  
pp. 1207-1222 ◽  
Author(s):  
Xiuqing Yang ◽  
Jingwen Mao ◽  
Zongsheng Jiang ◽  
M. Santosh ◽  
Zuoheng Zhang ◽  
...  
Keyword(s):  
Iron Ore ◽  
Iron Reduction ◽  
Hydrothermal Fluids ◽  
Northwestern China ◽  
Iron Deposit ◽  
Organic Carbon Content ◽  
Isotope Data ◽  
Western Tianshan ◽  
Dissimilatory Iron Reduction ◽  
Si Isotope

Abstract Submarine volcanic-hosted iron deposits are important sources of iron ore in northwestern China. Here we present the petrological characteristics and coupled Fe-O, C, and Si isotope data of iron ores from the Shikebutai submarine volcanic-hosted hematite deposit in the Western Tianshan region. Several stratiform and lenticular hematite-dominated orebodies occur in Carboniferous submarine volcano-sedimentary sequences in this region. The ores are mainly composed of hematite, quartz, and minor siderite with distinct alternating iron-rich and silica-rich bands. The hematite shows δ56Fe and δ18O values in the range of –0.31 to 0.80‰ and 2.2 to 7.0‰, respectively, and the jasper yields δ30Si values of –1.90 to –1.20‰. Iron and Si were both derived from hydrothermal fluids related to submarine magmatism/volcanism. The Fe-bearing minerals in the Shikebutai deposit define distinct formation pathways. Hematite is the primary dehydrated Fe(III) oxyhydroxide, and the Fe isotope data indicate fractionation resulting from the partial oxidation of Fe(II). The O isotope data reflect inheritance from the submarine hydrothermal fluids source. Jasper was produced during coprecipitation of silica adsorbed onto the Fe(III) oxyhydroxides. The siderite-rich iron ore/volcaniclastic rock samples with a high and variable total organic carbon content (0.14–5.57%) show negative δ13C values (–3.0 to –1.1‰) and light δ56Fe values (–1.11 to –0.84‰). Our isotope data, together with the common occurrence of hematite inclusions in siderite, suggest that siderite was mainly produced by microbial dissimilatory iron reduction during diagenesis. The geologic, petrological, and isotopic data suggest that the Carboniferous Shikebutai deposit was precipitated through chemical and biogenic processes.

Geochemical Characteristics, Genesis of Concealed Cu-rich Ore Body in the Jinchuan Deposit, Northwestern China, and Its Prospecting

2009 ◽  
Vol 83 (6) ◽  
pp. 1085-1100 ◽  
Author(s):  
GAO Yalin ◽  
TANG Zhongli ◽  
ZHANG Mingjie ◽  
TIAN Yulong ◽  
XIAO Lizhong
Keyword(s):  
Geochemical Characteristics ◽  
Northwestern China ◽  
Ore Body

scholarly journals Tree ringδ18O's indication of a shift to a wetter climate since the 1880s in the western Tianshan Mountains of northwestern China

2015 ◽  
Vol 120 (13) ◽  
pp. 6409-6425 ◽  
Author(s):  
Guobao Xu ◽  
Xiaohong Liu ◽  
Guoju Wu ◽  
Tuo Chen ◽  
Wenzhi Wang ◽  
...  
Keyword(s):  
Tianshan Mountains ◽  
Northwestern China ◽  
Western Tianshan

Geochemical characteristics of the fine-grained component of surficial deposits from dust source areas in northwestern China

2018 ◽  
Vol 34 ◽  
pp. 18-26 ◽  
Author(s):  
Xunming Wang ◽  
Ting Hua ◽  
Bingqi Zhu ◽  
Lili Lang ◽  
Caixia Zhang
Keyword(s):  
Geochemical Characteristics ◽  
Northwestern China ◽  
Dust Source ◽  
Source Areas ◽  
Fine Grained ◽  
Surficial Deposits
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