Xin-Fu Zhao
China University of Geosciences
Publications 47
#1Le Xiong (China University of Geosciences)H-Index: 1
#2Xin-Fu Zhao (China University of Geosciences)H-Index: 21
Last.Zuwei Lin (China University of Geosciences)
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Abstract The source(s) of lode gold deposits formed in Precambrian cratons related to accretion/collision and cratonic reactivation, formerly attributed to either supercrustal volcano-sedimentary sequences or deep crustal/sub-crustal origin, remains controversial largely because gold deposits are spatially related to metamorphosed rocks, but geochemical data somewhat indicate a poorly understood deep sources. Reconciling such conflicts is important to better understand the main factor controllin...
#1Mei-Zhen YangH-Index: 1
#2Jianwei LiH-Index: 28
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Abstract The Dahu lodegold deposit is situated in the Xiaoqinling district, hosted in the east-west-trending shear zones, and characterized by auriferous quartz vein-type. Based on the morphology and paragenetic assemblage, three generations of pyrite (termed as first-generation pyrite (Py1), Py2, and Py3) can be classified. The Py2 can be further identified as brittle fractured pyrite (Py2-B) and ductile deformed pyrite (Py2-D). The different generations of pyrites feature distinct contents and...
#1Jian-Hui Su (China University of Geosciences)H-Index: 1
#2Xin-Fu Zhao (China University of Geosciences)H-Index: 21
Last.Yi-Lin XiongH-Index: 1
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Abstract Carbonatites are well known as economic resources for rare metals, such as rare earth elements (REE) and Nb. However, the origin and evolutionary processes of carbonatites and related silicate rocks as well as the relevant rare metals enrichment mechanism are highly controversial. In this study, we present detailed petrographic observations and geochemical data on the Miaoya syenite-carbonatite complex, which hosts both Nb and REE resources. The Miaoya syenites consist predominantly of ...
1 CitationsSource
#1Q. An (USTC: University of Science and Technology of China)H-Index: 11
#2Ruslan Asfandiyarov (University of Geneva)H-Index: 20
Last.S. Zimmer (University of Geneva)H-Index: 4
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The precise measurement of the spectrum of protons, the most abundant component of the cosmic radiation, is necessary to understand the source and acceleration of cosmic rays in the Milky Way. This work reports the measurement of the cosmic ray proton fluxes with kinetic energies from 40 GeV to 100 TeV, with 2 1/2 years of data recorded by the DArk Matter Particle Explorer (DAMPE). This is the first time that an experiment directly measures the cosmic ray protons up to ~100 TeV with high statist...
5 CitationsSource
#1Zhong-Zheng Yuan (China University of Geosciences)
#2Zhan-Ke Li (China University of Geosciences)H-Index: 7
Last.Jianwei Li (China University of Geosciences)H-Index: 28
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Abstract The Dayingezhuang gold (silver) deposit in the Jiaodong district, eastern margin of North China Craton, is hosted in the NE to NNE-trending Zhaoping Fault along the contact between Precambrian metamorphic rock (Jiaodong Group) and Mesozoic intrusion (Linglong granite). Although many studies have addressed the genesis of this deposit, the mineralization age, the sources of ore-forming fluids and materials, the ore genesis is still controversial, particularly on the relationship between A...
#1Li-Ping Zeng (China University of Geosciences)H-Index: 1
#2Li-Ping Zeng (China University of Geosciences)
Last.Carl Spandler (JCU: James Cook University)H-Index: 28
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Scapolite occurs as the major halogen-bearing phase at all paragenetic stages of skarn formation and mineralization in the Jinshandian iron skarn deposit, Eastern China. Here we integrate geochemical characteristics of scapolite with in situ B and Sr isotopes of associated tourmaline and fluorapatite, respectively, to trace the sources and evolution of the fluids responsible for mineralization in this deposit. Pre-ore stage I scapolite has molar Cl/Br ratios ranging from ~ 920 to 2200, which, to...
#1Zhi-Kun Su (China University of Geosciences)H-Index: 1
#2Xin-Fu Zhao (China University of Geosciences)H-Index: 21
Last.Albert H. Hofstra (USGS: United States Geological Survey)H-Index: 17
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Abstract Tourmaline is a common boron-bearing mineral in hydrothermal system and has been widely used as a mineral probe to reconstruct geological processes because of its broad range in composition and resistance to metasomatic alteration. The origin of Kiruna-type iron oxide-apatite (IOA) deposits, commonly linked to andesitic subvolcanic or volcanic rocks, is highly controversial. Constraints on the evolution of these mineralizing systems are needed to advance understanding of the ore-forming...
1 CitationsSource
#1Shao-Rui Zhao (China University of Geosciences)
#2Jianwei Li (China University of Geosciences)H-Index: 28
Last.Ke-Fei Tang (CDUT: Chengdu University of Technology)
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Abstract The Xiaoqinling district, the second largest gold producer in China, is situated on the southern margin of the North China Craton and immediately to the north of the Qinling Orogen. The timing and genesis of the gold deposits have been hotly debated because the area has undergone multiple tectono-magmatic events since the stabilization of the North China Craton in the early Paleoproterozoic. Whether they are genetically related to the Triassic orogeny that formed the Qinling Orogen or a...
#1Dongsheng Ding (NU: Northeastern University)
Last.Xin-Fu Zhao (China University of Geosciences)H-Index: 21
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#1Xiaoyan Li (Northwest University (United States))H-Index: 1
#2Chao Zhang C (Northwest University (United States))H-Index: 81
Last.Francois HoltzH-Index: 50
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Abstract We present an analytical approach to determine the Fe2+/ΣFe ratio in amphiboles and biotites using electron probe microanalysis (EPMA). The “flank method” applied in this study is based on the fact that FeL line spectra show different peak position and intensity for Fe2+ and Fe3+, which is associated with a resonant process involving both X-ray absorption and emission. The flank positions for Lα and Lβ, which correspond to sites with minimal Fe3+ L3 absorption and maximal Fe2+ L2 absorp...
1 CitationsSource