Results 11 to 20 of about 1,115 (180)

Marcasite at the Permian‐Triassic Transition

open access: yesGeophysical Monograph Series, Page 377-399., 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.
Elena Lounejeva   +7 more
wiley  

+1 more source

The Thermal Decomposition Behavior of Pyrite-Pyrrhotite Mixtures in Nitrogen Atmosphere

open access: yesJournal of Chemistry, 2022
To assess the thermal transformation process of common sulfide minerals in a nitrogen atmosphere, thermogravimetric analysis, X-ray diffraction, scanning electron microscopy, and thermogravimetric mass spectrometry are employed to define the influence of
Changshun Tian   +4 more
doaj   +1 more source

Research Progress and Development Trend of Pyrrhotite Beneficiation

open access: yesKuangchan zonghe liyong, 2022
This article summarizes the research progress of pyrrhotite beneficiation, and believes that pyrrhotite will remain a research hotspot in flotation and separation from polymetallic sulfide ore.
Xiaopu Zhang, Guanghua Ai, Huashan Yan
doaj   +1 more source

Conditions of metamorphism of the Outokumpu Cu - Co - Zn deposit from sphalerite geobarometry [PDF]

open access: yesBulletin of the Geological Society of Finland, 1998
Electron microprobe analysis was used to determine Zn and Fe in homogeneous samples of sphalerite in mutual contact with pyrrhotite and pyrite from the disseminated ore layer stratigraphically high in the Keretti orebody at Outokumpu, Finland.
J.M. Warrender, D.R. Bowes, C.M. Farrow
doaj   +1 more source

GEOCHEMICAL FEATURES OF SULFIDES OF THE AKTASH MAGNETITE-POLYMETALLIC DEPOSIT, WESTERN KARAMAZAR, TAJIKISTAN (LA-ICP-MS DATA) [PDF]

open access: yesМинералогия, 2023
The distribution of trace elements in sulfides from various ores of the Aktash magnetitepolymetallic deposit (Tajikistan) is studied using LA-ICP-MS method. Sulfides partly replace banded magnetite ores.
U.A. Yatimov   +2 more
doaj   +1 more source

Pyrrhotite-troilite intergrowth from Luikonlahti copper deposit, eastern Finland [PDF]

open access: yesBulletin of the Geological Society of Finland, 1970
A homoaxial intergrowth of troilite with iron-deficient pyrrhotite, Fe0.921S, is described. X-ray single crystal study of the pyrrhotite component points to a superstructure with c = 11 C and apparently to an orthorhombic symmetry. The intergrowth occurs
A. Vorma
doaj   +1 more source

Floatation separation of galena, sphalerite, and pyrrhotite by combined depressant CCSL

open access: yes工程科学学报, 2017
The flotation separation of galena, sphalerite, and pyrrhotite was investigated with CCSL as a depressant. Flotation test results show that galena and sphalerite can float but pyrrhotite can barely float with CCSL as a depressant.
BAI An-ping, SONG Yong-sheng, ZHOU He
doaj   +1 more source

Study on the Structure and Catalytic Performance of Catalyst Fe7S8 for Direct Coal Liquefaction

open access: yesTaiyuan Ligong Daxue xuebao, 2021
In order to study the relationship between the direct coal liquefaction performance and the structure of Fe7S8 catalysts prepared by different methods, Fe7S8 catalysts with different crystal structures were prepared by calcination and solvothermal method
Xueming WANG, Xiaohong LI, Ruoqing WANG
doaj   +1 more source

The Iron Sulfides Crystal Growth from the Halide Melts [PDF]

open access: yesMaterials Research, 2018
A new approach to a single crystals growth of the iron sulfide phases of definite structure and nonstoichiometry is developed and applied. This approach is based on the method of crystal growing from solution melts.
Alexander Zavrazhnov   +5 more
doaj   +1 more source

THE CONSTITUTION OF NICKELIFEROUS PYRRHOTITE. [PDF]

open access: yesJournal of the American Chemical Society, 1892
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openaire   +2 more sources

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