Results 101 to 110 of about 1,478 (213)

The occurrence of uranium in association with cassiterite, wolframite, and sulphide mineralization in South-West England

, 1982
The U content of cassiterite (SnO2), wolframite (Fe,Mn)WO4, and various sulphides from two localities in the Cornubian batholiths of south-west England has been investigated.
Swart, P. K, Moore, F
core   +1 more source

U-Pb geochronology of wolframite from Polski Gradets, Bulgaria and Barruecopardo, Spain, using in situ LA-ICP-MS technique [PDF]

This study presents U-Pb age data obtained using an in situ LA-ICP-MS technique applied to wolframite samples from Polski Gradets (Bulgaria) and Barruecopardo (Spain).
Holma, M., Peytcheva, I., Georgiev, S., Ganev, V.Y., Stavrev, M., Tornos, F.   +5 more
core   +1 more source

Beneficiation of Low Grade Wolframite Ore from Degana, Rajasthan [PDF]

, 1968
Woframite is one of the principal minerals containing tungsten and is considered as a strategic mineral because of its importance and short supply. It is a tungstate of iron and manganese.
Narasimham, J B, Ghosh, C, Pai, D R, Majumdar, K K   +3 more
core   +1 more source

Direct synthesis of highly reactive nanostructured scheelite from enriched wolframite and calcium oxide through planetary ball milling

, 2020
Nanostructured scheelite (CaWO4) was synthesized directly from enriched wolframite (Fe1-xMnxWO4) ore (55.18 % WO3) and lime (CaO) by energetic planetary milling, with no need of high-temperature calcination.
Polini R., Nunziante P., Marcheselli G., D'Ottavi C.   +3 more
core   +1 more source

Short Time and Low Temperature Reaction between Metal Oxides through Microwave-Assisted Hydrothermal Method

Advances in Condensed Matter Physics, 2016
This work demonstrates the possibility of synthesis of cadmium tungstate at low temperatures using oxide precursors. Cadmium tungstate (CdWO4) scintillator was produced via microwave-assisted hydrothermal reaction using the precursors CdO and WO3.
S. M. V. Novais, P. C. R. Silva, Z. S. Macedo, L. B. Barbosa   +3 more
doaj   +1 more source

Recovery of W(VI) from Wolframite Ore Using New Synthetic Schiff Base Derivative. [PDF]

Int J Mol Sci, 2023
Elbshary RE, Gouda AA, El Sheikh R, Alqahtani MS, Hanfi MY, Atia BM, Sakr AK, Gado MA.   +7 more
europepmc   +1 more source

Historical shipwrecks in international waters contributes to coastal pollution

Ocean and Coastal Research
In 2021, rubber bales appeared along the Brazilian coastline, causing environmental impacts. In this research paper, we identified a Second World War shipwreck that was associated with this event.
Luis Ernesto Arruda Bezerra, Carlos Eduardo Peres Teixeira, Claudio L. S. Sampaio, Rivelino Martins Cavalcante, Marcelo de Oliveira Soares   +4 more
doaj   +1 more source

Procedure for dissolving wolframite in order to determine trace elements by atomic absorption spectrometry

, 1995
An analytical procedure for dissolving wolframite in order to determine trace elements by atomic absorption is reported. After decomposition of the mineral by alkaline fusion, the cooled flux is dissolved by heating with aqua regia.
MIGNARDI, Silvano, MASI, Umberto
core   +1 more source

Atomic structural changes in the formation of transition metal tungstates: the role of polyoxometalate structures in material crystallization. [PDF]

Chem Sci, 2023
Skjærvø SL, Anker AS, Wied MC, Kjær ETS, Juelsholt M, Christiansen TL, Ø Jensen KM.   +6 more
europepmc   +1 more source

Brief Review of the Effects of Pressure on Wolframite-Type Oxides

, 2018
In this article we review the advances that have been made on the understanding of the high-pressure structural, vibrational, and electronic properties of wolframite-type oxides since the first works in the early 1990s.
Daniel Errandonea, Javier Ruiz-Fuertes
core   +1 more source