Results 11 to 20 of about 1,598 (100)

Diagenesis of the Sedimentary Fe–Ni Deposits of Euboea: Evidence Based on Phyllosilicate Mineralogy

open access: yesMaterials Proceedings, 2021
A set of samples with different textures from the sedimentary Fe–Ni deposits of Central Euboea, Greece, were studied with XRD and SEM-EDS to investigate the relationships between phyllosilicates present.
Spyros Cheliotis-Chatzidimitriou   +2 more
doaj   +1 more source

Mineralization of the Tuwu Porphyry Cu Deposit in Eastern Tianshan, NW China: Insights From In Situ Trace Elements of Chlorite and Pyrite

open access: yesFrontiers in Earth Science, 2021
The Tuwu porphyry copper deposit is located on the Dananhu-Haerlik island arc in eastern Tianshan, NW China. Based on geology, petrology, and in situ trace element studies of pyrite and chlorite, we redefined the characteristics of hydrothermal fluids ...
Wei Tan   +6 more
doaj   +1 more source

The Relationship between Chlorite and Reservoir Quality in the Huagang Formation, Xihu Depression, China

open access: yesEnergies, 2022
Low permeability tight gas resources account for 90% of the Xihu Sag. Under the background of extensive development of low permeability and tight reservoirs, the key to economic and effective development is to find sweet reservoir formation.
Dongping Duan   +4 more
doaj   +1 more source

Was the Kalkarindji Continental Flood Basalt Province a Driver of Environmental Change at the Dawn of the Phanerozoic?

open access: yesGeophysical Monograph Series, Page 435-447., 2021

Exploring the links between Large Igneous Provinces and dramatic environmental impact

An emerging consensus suggests that Large Igneous Provinces (LIPs) and Silicic LIPs (SLIPs) are a significant driver of dramatic global environmental and biological changes, including mass extinctions.
Peter E. Marshall   +2 more
wiley  

+1 more source

Near Infrared Spectroscopic Study of Trioctahedral Chlorites and Its Remote Sensing Application

open access: yesOpen Geosciences, 2019
The mineral chemistry of thirteen trioctahedral chlorite samples from four regions in northwestern China, having a wide range of Fe and Mg contents and relatively constant Al and Si contents, were studied via raman spectroscopy, near infrared (NIR ...
Yang Min   +7 more
doaj   +1 more source

Occurrence of a Likely Tuff Bed between the Middle and Upper Siwaliks, Taunsa area, Dera Ghazi Khan, Eastern Sulaiman Range, Pakistan

open access: yesInternational Journal of Economic and Environment Geology, 2020
A likely tuff bed lies along the gradational contact of the Middle and Upper Siwaliksineastern Sulaiman Range, Taunsa areaofDera GhaziKhan district, Pakistan.
Rahman Ullah, Nie Fengjuin, Zhang Chengyong, Saqib Izhar, Idrees Safdar, Zhang Xin, Asim Ali
doaj   +1 more source

The propylitic alteration in the Ponce Enriquez Gold Mining district, Azuay province, Ecuador: genetic constraints from a mineral chemistry and fluid inclusions study

open access: yesFrontiers in Earth Science, 2023
Wide areas of the Southern sector of Ecuador are characterized by Cretaceous mafic volcanic rocks, pervasively altered by a propylitic mineralogical assemblage with epidote, chlorite, and quartz with minor titanite, illite and prehnite.
Paolo Fulignati   +9 more
doaj   +1 more source

PT-FORMATION CONDITIONS OF POLYMETALLIC ORES FROM THE Pb-Zn-Fe AKTASH SKARN DEPOSIT (WESTERN KARAMAZAR, TAJIKISTAN) [PDF]

open access: yesМинералогия, 2021
Fluid inclusions are studied in calcite from magnetite ores and sulfide-carbonate veins of the Aktash sulfide-magnetite deposit (Western Karanazar, Tajikistan) to identify their formation conditions.
U.A. Yatimov   +2 more
doaj   +1 more source

Experimental study on reaction of chlorite with CO2 aqueous solution

open access: yesYouqicang pingjia yu kaifa, 2022
During the reaction between CO2 and rocks, there is a synergistic/coupling effect among minerals because the rocks contain quartz, potassium feldspar, albite and other components, which promotes or inhibits the reaction process to a certain extent.
DENG Jiasheng   +5 more
doaj  

Features of the mineralogical composition of solod and solod meadow-chestnut soil, the case of soils of the liman depression at Dzhanybek research station of the Institute of Forest Science RAS

open access: yesБюллетень Почвенного института им. В.В. Докучаева, 2023
The structure of the soil cover at the territory of the clayey semidesert of the Northern Caspian Sea is represented by triparted soil complex and peculiar soils like solod.
E. B. Varlamov   +4 more
doaj   +1 more source

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