Study on the ore-forming mechanism of the Wutubulake iron deposit in the southern of Altay, Xinjiang

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	Study on the ore-forming mechanism of the Wutubulake iron deposit in the southern of Altay, Xinjiang
	Zhang, ZX (Zhang ZhiXin); Yang, FQ (Yang FuQuan); Liu, F (Liu Feng); Chai, FM (Chai FengMei); Geng, XX (Geng XinXia); Ouyang, LJ (Ouyang LiuJin); Jiang, LP (Jiang LiPing); Lu, SJ (Lu ShuJun)
刊名	ACTA PETROLOGICA SINICA
	2012
卷号	28 期号:7 页码:2043-2056
关键词	Skarn Fluid inclusion Stable isotope Ore-forming mechanism Wutubulake Xinjiang
ISSN号	1000-0569
英文摘要	The medium sized Wutubulake iron deposit is hosted in the metamorphosed volcaniclastic-sedimentary sequence of the Upper Silurian-Lower Devonian Kangbutiebao Formation,the orebodies occur as stratoids or lenses, which are surrounded by the skarn minerals. Homogenization temperature of fluid inclusions in early skarn stage vary from 256 to 534 degrees C, salinity range from 11.90% to > 73.96% NaCleqv,density range from 0.56 to 0.96g/cm(3), all of these showed that the ore-forming fluid in early skarn stage are high-middle temperature, high-middle salinity and high-middle density, which is belong to NaCl-H2O system; Homogenization temperature of fluid inclusions in retrograde alteration stage vary from 188 to 313 degrees C, salinity range from 12.30% to 39.76% NaCleqv,density range from 0.83 to 1.05g/cm(3), which have the characteristic of middle temperature, middle-low salinity and high-middle density, also belong to NaCl-H2O system. In quartz-sulfide-carbonate stage,the ore-forming fluid is NaCl-H2O-CO2 +/- CH4 or N-2 type fluid. Homogenization temperature of fluid inclusions in this stage vary from 162 to 320 degrees C, salinity range from 2.90% to 15.57% NaCleqv, density range from 0.70 to 1.02g/cm(3). The oxygen and hydrogen isotopic data of garnet suggest that the ore-forming fluid in early skarn stage is mainly derived from magmatic water, but the oxygen and hydrogen isotopic characteristic of quartz and calcite imply that the ore-forming fluid in quartz-sulfide-carbonate stage is derived from mixing of magmatic water and low temperature and salinity meteoric water. The carbon and oxygen isotopic data of calcite suggest that the carbon in the fluid is mainly derived from the deep-seated magma,and the sulfide isotopic data show that the characteristic magma sulfur. We hold that the ore-forming mechanism is closely related to the retrogressive metamorphism of the skarn minerals,which might have resulted from the Early Triassic magmatic hydrothermal interaction with volcanic of the Upper Silurian-Lower Devonian Kangbutiebao Formation.
学科主题	矿床地质
WOS关键词	JAPANESE SKARN DEPOSITS ; FLUID INCLUSION ; OXYGEN ISOTOPE ; TECTONIC EVOLUTION ; NORTHWEST CHINA ; IGNEOUS ROCKS ; NW CHINA ; MINERALIZATION ; GEOCHEMISTRY ; ACCRETIONARY
WOS研究方向	Geology
语种	中文
出版者	SCIENCE PRESS
WOS记录号	WOS:000306631600008
内容类型	期刊论文
源URL	[http://119.78.100.197/handle/2HKVOGP0/39554]
专题	中国地质调查局
作者单位	China Univ Geosci, Fac Geosci & Resources, Beijing 100083, Peoples R China
推荐引用方式 GB/T 7714	Zhang, ZX ,Yang, FQ ,Liu, F ,et al. Study on the ore-forming mechanism of the Wutubulake iron deposit in the southern of Altay, Xinjiang[J]. ACTA PETROLOGICA SINICA,2012,28(7):2043-2056.
APA	Zhang, ZX .,Yang, FQ .,Liu, F .,Chai, FM .,Geng, XX .,...&Lu, SJ .(2012).Study on the ore-forming mechanism of the Wutubulake iron deposit in the southern of Altay, Xinjiang.ACTA PETROLOGICA SINICA,28(7),2043-2056.
MLA	Zhang, ZX ,et al."Study on the ore-forming mechanism of the Wutubulake iron deposit in the southern of Altay, Xinjiang".ACTA PETROLOGICA SINICA 28.7(2012):2043-2056.