scholarly journals Dissolution Behaviors of Trace Muscovite during Pressure Leaching of Hydrothermal Vein Quartz Using H2SO4 and NH4Cl as Leaching Agents

Minerals ◽  
2018 ◽  
Vol 8 (2) ◽  
pp. 60 ◽  
Author(s):  
◽  
◽  
◽  
Keyword(s):  
Pressure Leaching ◽  
Vein Quartz ◽  
Hydrothermal Vein

scholarly journals MANGANESE MINERALISATIONS AT THE BASE OF MIOCENE SEDIMENTS IN NORTHERN SARDINIA (ITALY)

2017 ◽  
Vol 43 (5) ◽  
pp. 2588
Author(s):  
S. Fadda ◽  
M. Fiori ◽  
S. Pretti ◽  
P. Valera
Keyword(s):  
Hydrothermal Activity ◽  
Gangue Mineral ◽  
Manganese Ore ◽  
Calc Alkaline ◽  
Vein Quartz ◽  
Marine Transgression ◽  
Hydrothermal Vein ◽  
Fe Oxides ◽  
Ore Minerals ◽  
Near Shore

During the eastward drift of the Palaeozoic-Mesozoic block formed by Sardinia and Corsica in the Oligocene-Miocene, calc-alkaline volcanism developed mostly in the western part of the island. Most Tertiary metallogenic phoenomena are related to hydrothermal activity associated with this volcanism. Following volcanic and related hydrothermal activity, sediments were deposited during the Oligocene-Miocene as a consequence of a marine transgression. The basal part of this series is clastic and includes elements derived from erosion of unaltered volcanics as well as hydrothermally altered rocks and hydrothermal vein quartz. Inside the Tertiary volcanics manganese ore-minerals occur as nodules, veinlets, and stockworks and mainly include Mn and Fe oxides; quartz in different forms is the most common gangue mineral. The mineralisations at the contact between volcanics and Miocene sediments are the most homogeneous, the ore-minerals occur in the cement, but also as fairly continuous thin beds, nodules and veinlets containing pyrolusite, frequent ramsdellite, less frequent manganite, psilomelane, cryptomelane-manjiroite, rare ranciéite, and todorokite. The nature of the ore-bearing beds indicate a near-shore clastic environment along the ancient coastal lines of the Miocene sea. Genetic considerations point to a supergenic transport and redeposition after erosion of primary dispersion and residual concentrations of Mn in the volcanics.

Hydrothermal vein quartz from the granites of Bohuslav type (Rosynsko-Tikytskiy megablock of Ukrainian Shield)

2016 ◽  
Vol 37 ◽  
pp. 59-64
Author(s):  
V.M. Zagnitko ◽  
◽  
V.V. Shunko ◽  
I.V. Kvasnytsia ◽  
V.S. Sydorchuk ◽  
...  
Keyword(s):  
Ukrainian Shield ◽  
Vein Quartz ◽  
Hydrothermal Vein

Thermoluminescence spectra of igneous quartz and hydrothermal vein quartz

1993 ◽  
Vol 20 (5) ◽  
Author(s):  
W.J. Rink ◽  
H. Rendell ◽  
E.A. Marseglia ◽  
B.J. Luff ◽  
P.D. Townsend
Keyword(s):  
Vein Quartz ◽  
Hydrothermal Vein

Basement aquifer evolution and the formation of unconformity-related hydrothermal vein deposits: LA-ICP-MS analyses of single fluid inclusions in fluorite from SW Germany

2021 ◽  
Vol 575 ◽  
pp. 120260
Author(s):  
Manuel Scharrer ◽  
Rebekka Reich ◽  
Tobias Fusswinkel ◽  
Benjamin F. Walter ◽  
Gregor Markl
Keyword(s):  
Fluid Inclusions ◽  
Hydrothermal Vein ◽  
Icp Ms ◽  
Vein Deposits

scholarly journals Lead Recovery from Solid Residues of Copper Industry Using Triethylenetetramine Solution

Minerals ◽  
2021 ◽  
Vol 11 (5) ◽  
pp. 546
Author(s):  
Mateusz Ciszewski ◽  
Andrzej Chmielarz ◽  
Zbigniew Szołomicki ◽  
Michał Drzazga ◽  
Katarzyna Leszczyńska-Sejda
Keyword(s):  
Lead Extraction ◽  
Pressure Leaching ◽  
Base Metals ◽  
Lead Carbonate ◽  
Pure Lead ◽  
Industrial Processing ◽  
High Temperature And Pressure ◽  
Lead Recovery ◽  
Temperature And Pressure ◽  
Increasing Temperature

Industrial processing of mineral ores and concentrates generates large amounts of solid residues, which can be landfilled or further processed to recover selected elements depending on its economical profitability. Pressure leaching is a technology enabling high recovery of base metals like copper and zinc, transferring others like lead and iron to the solid residue. High temperature and pressure of such leaching leads to formation of sparingly soluble lead jarosite (plumbojarosite). The load of lead landfilled as solid residues resulting from such operation is so big that its recovery is perspective and crucial for waste-limiting technologies. This paper is devoted to lead extraction from pressure leaching residues using triethylenetetramine solution and then its precipitation as a commercial lead carbonate. The highest obtained recovery of lead was 91.3%. Additionally, presented technology allows to manage and recycle amine solution and reuse solid products. Produced pure lead carbonate can be directly added to smelting, not increasing temperature within the furnace.

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