Results 31 to 40 of about 19,320 (212)

Jarosite versus Soluble Iron-Sulfate Formation and Their Role in Acid Mine Drainage Formation at the Pan de Azúcar Mine Tailings (Zn-Pb-Ag), NW Argentina [PDF]

open access: yes, 2014
Secondary jarosite and water-soluble iron-sulfate minerals control the composition of acid mine waters formed by the oxidation of sulfide in tailings impoundments at the (Zn-Pb-Ag) Pan de Azúcar mine located in the Pozuelos Lagoon Basin (semi-arid ...
Alicia Kirschbaum   +5 more
core   +3 more sources

MINERALOGICAL AND GEOCHEMICAL FEATURES OF SULFIDE CHIMNEYS OF THE YUBILEYNOE MASSIVE SULFIDE DEPOSIT (SOUTH URALS) [PDF]

open access: yesМинералогия, 2019
Three mineral types of hydrothermal chimneys (pyrite-chalcopyrite, pyrite-sphalerite-chalcopyrite and chalcopyrite-pyrite-sphalerite) form a continuous mineralogical range in ores from the Yubileynoe deposit.
A.S. Tseluyko   +5 more
doaj   +1 more source

‘Soft’ phonon modes,structured diffuse scattering and the crystal chemistry of Fe-bearing sphalerites [PDF]

open access: yes, 2005
Electron diffraction has been used to carefully investigate the reciprocal lattices of a range of iron-bearing sphalerites looking for evidence of Fe clustering and/or Fe/Zn ordering in the form of either additional satellite reflections or a structured ...
Liu, Yun   +4 more
core   +2 more sources

Utilization of flotation in copper extraction from polymetallic ore [PDF]

open access: yes, 2020
The aim of this study was to examineflotation of utility metals from poor polymetallic ores and verify the potential for profitable yields in connection withpotentially economic deposits of non-ferrous metals.The paper describes results in ...
Janáková, Iva   +2 more
core   +1 more source

Leaching and thermal decomposition of mechanically activated sphalerite-pyrite mixture [PDF]

open access: yesActa Montanistica Slovaca, 1997
The effect of mechanical activation and pyrite addition on the thermal decomposition and acid leaching of sphalerite was studied. Mechanical activation enhances both hydrometallurgical and pyrometallurgical processing of sphalerite.
BalហPeter
doaj  

Modeling of Structure, Thermodynamic Properties and Phase Transition Temperaturesof II-VI Crystals [PDF]

open access: yesЖурнал нано- та електронної фізики, 2016
The work is devoted to the theoretical calculations and experimental study of important thermodynamic parameters of II-VI crystals. Cubic sphalerite and hexagonal wurtzite cluster models of polymorphs for stoichiometric II-VI crystals (ZnX, CdX; X = S ...
T.O. Parashchuk
doaj   +1 more source

Status of Ecosystem Services in Abandoned Mining Areas in the Iberian Peninsula: Management Proposal

open access: yesToxics, 2023
An abandoned sphalerite mining area in the southwest (SW) of the Iberian Peninsula was studied to evaluate the impact that the presence of metal(loid)s has on soil and ecosystem health.
María González-Morales   +2 more
doaj   +1 more source

Activation of Sphalerite by Ammoniacal Copper Solution in Froth Flotation

open access: yesJournal of Chemistry, 2016
The activation of sphalerite particles by ammoniacal copper solution (ACS) was investigated in this study. This microflotation study was conducted on a single sphalerite mineral with the particles size of 38 μm to 75 μm.
Xian Xie, Kai Hou, Bo Yang, Xiong Tong
doaj   +1 more source

A novel property of DNA - as a bioflotation reagent in mineral processing. [PDF]

open access: yesPLoS ONE, 2012
Environmental concerns regarding the use of certain chemicals in the froth flotation of minerals have led investigators to explore biological entities as potential substitutes for the reagents in vogue.
Balasubramanian Vasanthakumar   +2 more
doaj   +1 more source

Pb-Zn and minor U mineralization at Tyndrum, Scotland. [PDF]

open access: yes, 1985
This mineralization occurs as veins and vein breccias in fractures associated with the Tyndrum-Glen Fyne fault. Quartz, galena and sphalerite, with minor chalcopyrite and baryte, are accompanied by small inclusions (in the galena-rich veins) of ...
Bethke   +14 more
core   +1 more source

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