Results 41 to 50 of about 145 (96)

Raman spectroscopy of synthetic, geological and biological vaterite: A Raman spectroscopic study [PDF]

, 2010
Raman spectroscopy was used to study vaterite samples of biological, geological and synthetic origin. The Raman band positions and the full width at half‐maximum (FWHM) of the lattice modes and the internal modes of the carbonate ion of all specimens ...
Jacob, D. E., Wehrmeister, U., Häger, T., Hofmeister, W., Soldati, Analía Leticia   +4 more
core   +1 more source

Process Optimization and Modeling of Microwave Roasting of Bastnasite Concentrate Using Response Surface Methodology. [PDF]

ACS Omega, 2021
Zheng Q, Xu Y, Ma S, Tian Y, Guan W, Li Y.   +5 more
europepmc   +1 more source

Behaviour of zirconium, niobium, yttrium and the rare earth elements in the Thor Lake rare-metal deposit, Northwest Territories, Canada

, 2010
The Thor Lake rare-metal (Zr, Nb, Y, REE, Ta, Be, Ga) deposit in the Northwest Territories of Canada represents one of the largest resources of zirconium, niobium, yttrium and the heavy rare earth elements in the world.
Sheard, Emma
core  

Minerales de elementos de tierras raras en la carbonativa de la Sierra de Maz (La Rioja, Argentina)

, 2017
Fil: Kriscautzky, Agustín. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas, Físicas y Naturales. Cátedra de Mineralogía; Argentina.Fil: Colombo, Fernando. Universidad Nacional de Córdoba.
Kriscautzky, Agustín, Baldo, Edgardo G.A., Colombo, Fernando   +2 more
core  

The role of nanocerianite (CeO₂) in the stability of Ce carbonates at low-hydrothermal conditions. [PDF]

RSC Adv, 2023
Szucs AM, Maddin M, Brien D, Rateau R, Rodriguez-Blanco JD.   +4 more
europepmc   +1 more source

Differentiated hydrothermal and meteoric alterations of the Lueshe carbonatite complex (Democratic Republic of Congo) identified by a REE study combined with a sequential acid-leaching experiment

, 2000
International audienceThe behavior of race-earth elements (REE) during hydrothermal alteration and progressive weathering has been studied by acid-leaching experiments on minerals and whole-rock samples of the Lueshe carbonatite complex (NE of Democratic
Toulkeridis, Theofilos, Clauer, Norbert, Bilal, Essaid, Nasraoui, Mohamed   +3 more
core   +1 more source

Rare Metal indicator minerals in bedrock and till at the Strange Lake peralkaline complex, Quebec and Labrador, Canada

, 2019
A study of rare metal indicator minerals and glacial dispersal was carried out at the Strange Lake Zr – Y – heavy rare earth element deposit in northern Quebec and Labrador, Canada.
McClenaghan, M. Beth, Paulen, Roger C., Kjarsgaard, Ingrid   +2 more
core   +1 more source

Bauxite in Abruzzi (Italy): the Campo Felice and Monte Orsello occurrences

, 2017
Bauxite deposits were largely exploited in Italy at the beginning of the twentieth century up to the 2nd World War. The most productive districts were located in the Apulia, Campania and Abruzzi region.
PUTZOLU, FRANCESCO, ArfÃ, G., Balassone, G., M. Boni, G. Arfè, Mondillo, N., A. Piccolo Papa, N. Mondillo, G. Balassone, Piccolo Papa, A., F. Putzolu, Boni, M.   +11 more
core   +1 more source

LREE redistribution during hydrothermal alteration at the Okorusu carbonatite complex, Namibia

, 2019
The Cretaceous Okorusu carbonatite, Namibia, includes diopside-bearing and pegmatitic calcite carbonatites, both exhibiting hydrothermally altered mineral assemblages.
S Broom-Fendley (21855821), B Yardley (21902804), D Banks (21902801), D Morgan (11498719), D Cangelosi (21902798)   +4 more
core  

Process mineralogy of Bayan Obo rare earth ore by MLA

, 2020
The maximum recovery of rare earth resource from the Bayan Obo ore deposit is a difficult task, especially without the sufficient data of mineralogy. In this paper the mineralogy of Bayan Obo ore deposit by comprehensively research with the application ...
Lyu, Renliang, Chi, Ru’an, Zhang, Yantu, Ruan, Yaoyang, Xu, Caili, Zhong, Chengbin, Zhou, Fang   +6 more
core