Results 101 to 110 of about 14,846 (227)

Adsorption of As and Zn on mechanically synthesized FeS [PDF]

open access: yesActa Montanistica Slovaca, 2005
The wastewater containing heavy metals posses one of the main problem for the environment. The research of the heavy metals removal is oriented on the application of natural materials as well as the waste from industry and agriculture. This work presents
Alena Aláčová   +3 more
doaj  

A feasibility study towards ultra-thin PV solar cell devices by MOCDV based on a p-i-n structure incorporating pyrite [PDF]

open access: yes, 2010
FeSx layers were deposited onto aluminosilicate glass substrates over a temperature range of 180°C to 500°C using a horizontal AP-MOCVD reactor. Fe(CO)5 was used as the Fe source in combination with t-Bu2S2 or t-BuSH as S precursor to control the rate of
Barrioz, Vincent   +5 more
core  

Infrared spectra of some sulfides and their analogs of binary composition in the long-wave region [PDF]

open access: yes
The far infrared spectra (500-60/cm) of some simple sulfides and their analogs were studied. In all, 22 minerals with different structure types were investigated, out of which 14 are sulfides (galena, alabandite, pyrrhotite, sphalerite, wurtzite ...
Povarennykh, A. S.   +3 more
core   +1 more source

Rock magnetic and geochemical evidence for authigenic magnetite formation via iron reduction in coal-bearing sediments offshore Shimokita Peninsula, Japan (IODP Site C0020) [PDF]

open access: yes, 2017
Sediments recovered at Integrated Ocean Drilling Program (IODP) Site C0020, in a fore‐arc basin offshore Shimokita Peninsula, Japan, include numerous coal beds (0.3–7 m thick) that are associated with a transition from a terrestrial to marine ...
Clyde, William C.   +6 more
core   +1 more source

Depression of pyrrhotite superstructures in copper flotation: A synchrotron X-ray powder diffraction and DFT study

open access: yesInternational Journal of Mining Science and Technology
Pyrrhotite naturally occurs in various superstructures including magnetic (4C) and non-magnetic (5C, 6C) types, each with distinct physicochemical properties and flotation behaviors.
Alireza Rezvani   +5 more
doaj   +1 more source

Recovery Process of Copper from a Sulfur Concentrate in Shandong Province

open access: yesKuangchan zonghe liyong
[Objective] A sulfur concentrate in Shandong contained 0.47% copper. In order to improve the utilization rate of mineral resources, [Method] technological mineralogy research and copper recovery process tests were conducted on the sulfur concentrate ...
Enming HUANG   +6 more
doaj   +1 more source

Pyrite/pyrrhotite mineral based electrochemical sensor for redox determination in aqueous media [PDF]

open access: yesKragujevac Journal of Science, 2018
The characterization, construction and performance characteristics of a novel sensor have been carried out. With this purpose, an accurate characterization of the mineral has been performed using scanning electron microscopy (SEM/EDX), X-ray spectrometer
Stanić Zorka   +3 more
doaj  

Geology and mineral deposits of the Julian District, San Diego County, California [PDF]

open access: yes, 1934
The Julian region, in the central part of San Diego County, California, includes the Julian, Banner, several other less important mining districts, and the Stonewall Mine on the Cuyamaca land grant.
Donnelly, Maurice
core  

Effects of the expansion mechanisms on the pyrrhotite-induced deterioration of concrete foundations

open access: yesCase Studies in Construction Materials
Using pyrrhotite containing aggregates in concrete foundations can lead to premature deterioration visibly identifiable by extensive map cracking, expansion and deformation of the concrete foundation.
Rui Zhong   +4 more
doaj   +1 more source

Identifying Framboidal Pyrrhotite: A Proxy for Hydrothermal Alteration of Organic‐Rich Sediments

open access: yesGeophysical Research Letters
Framboidal pyrrhotite, in sharp contrast to framboidal pyrite, has been rarely reported, and its formation remains poorly understood. Here we report its clear identification in a shale‐gas well core and explore its potential as a proxy for diagenesis or ...
Y. Wang   +7 more
doaj   +1 more source

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