Results 11 to 20 of about 120,799 (261)

Deep gold mineralization features of Jiaojia metallogenic belt, Jiaodong gold Province: Based on the breakthrough of 3000 m exploration drilling

open access: yesChina Geology, 2020
: Recently, continuous breakthroughs have been made about deep gold prospecting in the Jiaodong gold province area of China. Approximately 5000 t of cumulative gold resources have been explored in Jiaodong, which has thus become an internationally ...
Xue-feng Yu   +9 more
doaj   +1 more source

ACCUMULATION STAGES AND EVOLUTION CHARACTERISTICS OF OIL SHALE AND COAL IN THE DUNHUA-MISHAN FAULT ZONE, NORTHEAST CHINA; pp. 203–215 [PDF]

open access: yesOil Shale, 2016
Several coal- and oil shale-bearing basins are distributed in the Dunhua-Mishan Fault Zone in Northeast China, while there are certain differences in sedimentary association and occurrence characteristics between the deposited rocks. Based on the results
YINBO XU   +6 more
doaj   +1 more source

OIL YIELD AND BULK GEOCHEMICAL PARAMETERS OF OIL SHALES FROM THE SONGLIAO AND HUADIAN BASINS, CHINA: A GRADE CLASSIFICATION APPROACH; pp. 402–418 [PDF]

open access: yesOil Shale, 2013
Oil shale evaluation is based on oil yield by low-temperature carbonization, which is an extremely complex process. The TOC, semi-coke content, gas loss, bulk density, S2 and HI correlate well with oil yield.
PINGCHANG SUN   +7 more
doaj   +1 more source

Life on a Mesoarchean marine shelf – insights from the world’s oldest known granular iron formation

open access: yesScientific Reports, 2020
The Nconga Formation of the Mesoarchean (~2.96–2.84 Ga) Mozaan Group of the Pongola Supergroup of southern Africa contains the world’s oldest known granular iron formation.
Albertus J. B. Smith   +8 more
doaj   +1 more source

Anomaly and geochemistry of rare earth elements and yttrium in the late Permian coal from the Moxinpo mine, Chongqing, southwestern China

open access: yesInternational Journal of Coal Science & Technology, 2014
The rare earth elements and yttrium (REY) of the K2 coal from the Moxinpo mine, Chongqing, were determined using inductively coupled plasma mass spectrometry (ICP-MS).
Jianhua Zou   +5 more
doaj   +1 more source

THE CHARACTERISTICS OF COAL AND OIL SHALE IN THE COASTAL SEA AREAS OF HUANGXIAN COALFIELD, EASTERN CHINA; pp. 204–217 [PDF]

open access: yesOil Shale, 2015
Coal and oil shale quality is important to evaluate for mining purposes worldwide. In order to evaluate the quality and analyze the mineralization of coal and oil shale in the Paleogene Lijiaya Formation in Huangxian Coalfield, Eastern China, 27 samples ...
DAWEI LV   +7 more
doaj   +1 more source

Compositional Variation of Amphiboles During Magma Mixing: A Case Study of Huangyangshan A-Type Granite in Kalamaili Metallogenic Belt, East Junggar, China

open access: yesFrontiers in Earth Science, 2021
The Huangyangshan A-type granitic pluton, distributed along the thrust fault in the Kalamaili region of East Junggar, Xinjiang, China, consists of alkaline granite containing abundant dioritic enclaves that formed via magma mixing.
Chenyang Ye   +10 more
doaj   +1 more source

Scientific and Engineering Progress in CO2 Mineralization Using Industrial Waste and Natural Minerals

open access: yesEngineering, 2015
The issues of reducing CO2 levels in the atmosphere, sustainably utilizing natural mineral resources, and dealing with industrial waste offer challenging opportunities for sustainable development in energy and the environment.
Heping Xie   +7 more
doaj   +1 more source

Petrogenesis and relationship with REE mineralization of the quartz syenite from Chishan and Longbaoshan alkaline complex, southeastern North China Craton: Insights from zircon U–Pb geochronology, element, and Sr–Nd–Pb–Hf isotope geochemistry

open access: yesFrontiers in Earth Science, 2023
Mesozoic alkaline complexes associated with the rare earth element (REE) mineralization are developed in southeastern North China Craton (NCC), and they recorded some important information about the lithospheric thinning and destruction of the NCC ...
Pengfei Wei   +11 more
doaj   +1 more source

Effects of Flaw Geometry on the Fracturing Behavior of Rock-Like Materials Containing Two Arch-Like Parallelogram Flaws

open access: yesAdvances in Civil Engineering, 2020
To increase understanding of the strength and failure mechanism of rocks with arch-like fractures generated in the overlying strata above a gob during coal mining, a series of uniaxial compression tests on rock-like specimens containing two preexisting ...
Longqing Shi, Dongjing Xu
doaj   +1 more source

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