Journal ArticleDOI
Elemental and mineralogical anomalies in the coal-hosted Ge ore deposit of Lincang, Yunnan, southwestern China: Key role of N2–CO2-mixed hydrothermal solutions
Shifeng Dai,Peipei Wang,Colin R. Ward,Yuegang Tang,Xiaolin Song,Jianhua Jiang,James C. Hower,Tian Li,Vladimir V. Seredin,Nicola J. Wagner,Yaofa Jiang,Xibo Wang,Jingjing Liu +12 more
TLDR
The Lincang Neogene high-Ge coal deposit in Yunnan, southwestern China, is one of the major coal-hosted Ge deposits in the world as mentioned in this paper, and the coal samples are dominated by huminite-group macerals, all having more than 88.5% total huminite.About:
This article is published in International Journal of Coal Geology.The article was published on 2015-11-01. It has received 140 citations till now. The article focuses on the topics: Inertinite & Maceral.read more
Citations
More filters
Journal ArticleDOI
Coal as a promising source of critical elements: Progress and future prospects
Shifeng Dai,Robert B. Finkelman +1 more
TL;DR: In this paper, coal is considered as an economic source of strategically important elements, such as Ge, Ga, U, V, Se, rare earth elements, Y, Sc, Nb, Au, Ag, and Re, as well as base metals Al and Mg.
Journal ArticleDOI
A review of anomalous rare earth elements and yttrium in coal
TL;DR: In this article, the authors used the smoothness of a normalized REY distribution pattern for testing the quality of REY chemical analyses for coal and other sedimentary rocks, including terrigenous source rocks, ingress of hydrothermal fluids, influence of marine environments, percolating natural waters, volcanic ashes, and sedimentary environments of peat formation.
Journal ArticleDOI
Analysis, origin and significance of mineral matter in coal: An updated review
TL;DR: In this paper, a review of the methods that may be used to evaluate the percentage of mineral matter for a coal sample, as opposed to the ash yield, and to identify the minerals, their individual percentages, and their modes of occurrence within the coal.
Journal ArticleDOI
Quantification of the modes of occurrence of 42 elements in coal
TL;DR: In this paper, a series of 20 coal samples were subjected to sequential leaching with ammonium acetate, hydrochloric acid, hydrofluoric acid, and nitric acid to quantify the modes of occurrence of about 42 elements.
Journal ArticleDOI
Recognition of peat depositional environments in coal: A review
Shifeng Dai,Achim Bechtel,Cortland F. Eble,Romeo M. Flores,David French,Ian T. Graham,Madison M. Hood,Madison M. Hood,James C. Hower,James C. Hower,Vera A. Korasidis,Tim A. Moore,Tim A. Moore,Wilhelm Püttmann,Qiang Wei,Lei Zhao,Jennifer M.K. O'Keefe +16 more
TL;DR: Peat depositional environments, the sites where and conditions under which peat accumulates, significantly influence a resultant coal's physical properties, chemical composition, and coal utilization behavior.
References
More filters
Journal ArticleDOI
A profile refinement method for nuclear and magnetic structures
TL;DR: In this paper, a structure refinement method was described which does not use integrated neutron powder intensities, single or overlapping, but employs directly the profile intensities obtained from step-scanning measurements of the powder diagram.
The continental crust: Its composition and evolution
TL;DR: In this paper, the authors describe the composition of the present upper crust and deal with possible compositions for the total crust and the inferred composition of lower crust, and the question of the uniformity of crustal composition throughout geological time is discussed.
Book ChapterDOI
Rare earth elements in sedimentary rocks; influence of provenance and sedimentary processes
Journal ArticleDOI
Estimations of Clarkes for Carbonaceous biolithes: World averages for trace element contents in black shales and coals
M. P. Ketris,Ya. E. Yudovich +1 more
TL;DR: In this paper, the average trace element contents in the World black shales and coals and coal Clarke values are presented, based on comprehensive calculations using very large amount of information (thousands analyses of black shale, coals, and coal ashes for trace elements).
Journal ArticleDOI
The new inertinite classification (ICCP System 1994)
TL;DR: In the ICCP System 1994, the maceral group inertinite was enlarged to include seven macerals by replacing the former maceral sclerotinite by two others, called funginite and secretinite as mentioned in this paper.
Related Papers (5)
Estimations of Clarkes for Carbonaceous biolithes: World averages for trace element contents in black shales and coals
M. P. Ketris,Ya. E. Yudovich +1 more