Results 11 to 20 of about 87,639 (320)

The Morphological Characteristics of Authigenic Pyrite Formed in Marine Sediments

open access: yesJournal of Marine Science and Engineering, 2022
Pyrites are widely distributed in marine sediments, the morphology of which is applied as a proxy to infer the redox conditions of bottom water, and identify diagenetic stages and hydrocarbon leakage activities.
Jingyi Chang, Yuanyuan Li, Hailong Lu
doaj   +2 more sources

Interaction mechanism of tannic acid with pyrite surfaces and its response to flotation separation of chalcopyrite from pyrite in a low-alkaline medium

open access: yesJournal of Materials Research and Technology, 2020
In the process of chalcopyrite–pyrite flotation, depression of pyrite is of great significance. In this study, tannic acid (TA) was used to replace traditional inorganic reagents for depression of pyrite under the low-alkalinity condition, and the ...
Han Wang, Qicheng Feng
exaly   +3 more sources

SIMS discovers invisible gold in pyrite from the high-grade seafloor hydrothermal deposits in the Higashi-Aogashima knoll caldera, Izu-Ogasawara arc, Japan [PDF]

open access: yesScientific Reports
Seafloor hydrothermal deposits with extremely high concentrations of gold were recently discovered in the Higashi-Aogashima knoll caldera hydrothermal field, Izu-Ogasawara arc Japan. We report here the discovery of ultra-high concentrations of “invisible
Yuichi Morishita   +4 more
doaj   +2 more sources

Insights Into Divergent Mechanisms of Pyrite Oxidation by Indigenous Fungi From Mine Tailings [PDF]

open access: yesMicrobial Biotechnology
Fungi can oxidise pyrite, a process which has potential implications for metal bioleaching and acid mine drainage formation. However, this capacity has been demonstrated primarily using only a few model fungal strains.
Yu‐xiang Li   +10 more
doaj   +2 more sources

Sedimentary Mercury Enrichments as a Tracer of Large Igneous Province Volcanism

open access: yesGeophysical Monograph Series, Page 247-262., 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.
Lawrence M. E. Percival   +3 more
wiley  

+11 more sources

Research progress in the electrochemical behavior of pyrite during grinding and flotation

open access: yes工程科学学报, 2021
Metal sulfides are highly desirable owing to their semiconductor properties promoting electrochemical reactions for sulfide flotation. As the most common sulfide mineral, pyrite is found in coal and can contain a small amount of gold.
Zhi-hui GONG   +4 more
doaj   +1 more source

Oxidation of pyrite: Consequences and significance [PDF]

open access: yesHemijska Industrija, 2002
This paper presents the most important studies on the oxidation of pyrite particularly in aqueous solutions. The consequences of pyrite oxidation was examined, as well as its importance, from both the technical-technological and environmental points of ...
Dimitrijević Mile D.   +2 more
doaj   +1 more source

Comparison of different approaches for bioleaching of a granite-type uranium ore [PDF]

open access: yesE3S Web of Conferences, 2019
Uranium bioleaching has been rapidly developed in China during recent years. However, some problems during bioleaching, such as low uranium leaching efficiency for rocks lacking pyrite, remain to be solved.
Chen Gongxin   +5 more
doaj   +1 more source

Genetic Mechanism of Pyrite in the Shale of the Longmaxi Formation and Its Influence on the Pore Structure: A Case Study of the Changning Area, South Sichuan Basin of SW China

open access: yesFrontiers in Earth Science, 2022
Pyrite is a mineral that is commonly found in shale gas reservoirs. Its genetic mechanism and impact on pore and organic matter in shale gas reservoirs are critical for shale gas exploration.
Jiang He   +8 more
doaj   +1 more source

Pyrite chemistry records a multistage ore forming system at the Proterozoic George Fisher massive sulfide Zn-Pb-Ag deposit, Mount Isa, Australia

open access: yesFrontiers in Earth Science, 2023
Trace element (TE) analysis of pyrite via LA-ICP-MS can be used to reconstruct the conditions of pyrite formation in complex mineral systems. The Carpentaria province in northern Australia is host to some of the world’s highest value Zn-Pb (+Ag, Cu ...
Philip Rieger   +6 more
doaj   +1 more source

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