Results 21 to 30 of about 2,742,526 (343)

Process Mineralogy Study on a Skarn Type High Argillaceous Refractory Tungsten-Molybdenum Ore Deposit in Henan

open access: yesKuangchan zonghe liyong, 2023
This is a paper in the field of process mineralogy. A silica-type tungsten and molybdenum mine in Shaanxi has diverse ore types and large variations in tungsten and molybdenum grades, and it is difficult to improve the concentrate grade and recovery ...
Ying Jiang   +5 more
doaj   +1 more source

THE OCCURRENCE OF SPRUE IN THE UNITED STATES [PDF]

open access: yesThe American Journal of the Medical Sciences, 1915
n ...
openaire   +1 more source

Types, element occurrence forms and enrichment mechanisms of rhenium metal deposits

open access: yes地质科技通报, 2021
Rhenium is a strategic rare metal mineral that rarely forms independent deposits.Most of it is produced in the form of associated elements in the porphyry magmatic hydrothermal system.Studies have shown that rhenium-rich deposits are mainly distributed ...
Chengjiao Zhou   +2 more
doaj   +1 more source

The Occurrence of Gout in the United States [PDF]

open access: yesThe American Journal of the Medical Sciences, 1903
n ...
openaire   +1 more source

Occurrence of normally-pressured shale gas in China and the United States and their effects on mobility and production: A case study of southeast Sichuan Basin and Appalachia Basin

open access: yesYouqicang pingjia yu kaifa, 2022
Normal pressure shale gas plays such as the Ohio Formation Shale and Marcellus Formation Shale in the Appalachian Basin in the U.S. have been developed commercially.
JIANG Shu   +7 more
doaj  

Occurrence and recoverability of tight oil in Paleogene Funing Formation, Subei Basin

open access: yesShiyou shiyan dizhi, 2020
The shale, interlayers and adjacent carbonate rocks and siltstones in the second and fourth members of the Paleogene Funing Formation in the Subei Basin were studied using multi-temperature pyrolysis and NMR.
Jinning PENG   +6 more
doaj   +1 more source

Occurrence of Yaws in United States [PDF]

open access: yesSouthern Medical Journal, 1915
n ...
openaire   +2 more sources

Occurrence states and potential influencing factors of shale oil in the Permian Fengcheng Formation of Mahu Sag, Junggar Basin

open access: yesShiyou shiyan dizhi, 2021
Taking the Permian Fengcheng Formation of the Mahu Sag of the Junggar Basin as an example, a systematic study of shale oil was carried out for the occurrence states and potential influencing factors by integrating various data including cores, well ...
Zhifeng YANG   +5 more
doaj   +1 more source

Occurrence State of Lithium of a Greisen-Type Lithium Deposit in the Porphyry Sn-Ore Field, Southern Jiangxi Province

open access: yesYankuang ceshi
Greisen-type Li ore, a new type of lithium ore in recent years, is of great theoretical research and economic value. However, there is slightly insufficient in comprehensive evaluation of greisen-type Li ore in such a world-class Nanling W-Sn ...
Jinhua QIN   +5 more
doaj   +1 more source

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