Results 61 to 70 of about 5,096 (207)

Cerium anomalies in lateritic profiles [PDF]

, 1990
L'étude minéralogique et géochimique des terres rares permet de définir le comportement du cérium dans 4 profils latéritiques du ...
Bilong, P., Braun, J.J., Guillet, B., Michard, A., Muller, Jean-Pierre, Pagel, M.   +5 more
core   +1 more source

Global Copper Deposit Dataset: A New Open‐Source Database for Advanced Data Analysis and Exploration Targeting

Geoscience Data Journal, Volume 13, Issue 1, January 2026.
We build a new, open‐source global copper deposit dataset (GCDD), facilitating AI‐driven data analysis for exploration targeting and improving our understanding of copper mineralizing systems and their mappable expressions. The GCDD hosts information about 1483 copper deposits worldwide, capturing key deposit attributes such as location, genetic type ...
Bin Wang, Renguang Zuo, Oliver P. Kreuzer   +2 more
wiley   +1 more source

Rare Earth Elements in Plants of the Peak Range Volcanics (Queensland), Australia Exploration Target: A Biogeochemical Prospecting Tool

Ecological Research, Volume 41, Issue 1, January 2026.
The Peak Range Volcanics in central Queensland, Australia is naturally enriched with REEs (Rare Earth Elements). Fieldwork was conducted to analyse REEs in plant species occurring in this area. ABSTRACT Rare Earth Elements (REEs) are critical for high‐tech technologies in the green energy transition.
Amelia Corzo‐Remigio, Philip Nti Nkrumah, Peter D. Erskine, Antony van der Ent   +3 more
wiley   +1 more source

Mineral chemistry of monazite-(Nd), xenotime-(Y), apatite, fluorite and zircon hosting in lamprophyre dyke in Abu Rusheid area, South Eastern Desert, Egypt

Geologija, 2012
The studied mineralized lamprophyre dyke in Abu Rusheid area is trending NNW-SSE, and occurs withinAbu Rusheid mineralized shear zone, measuring 0.2 - 1.0 m in width and 0.5 - 1.0 km in length. It was emplacedparallel with the Abu Rusheid shear zone. The
Mohamed A. Ali
doaj  

The Quantification of Radiation Damage in Orthophosphates Using Confocal μ-Luminescence Spectroscopy of Nd3+

Frontiers in Chemistry, 2019
In this study, we present a new concept based on the steady-state, laser-induced photoluminescence of Nd3+, which aims at a direct determination of the amorphous fraction fa in monazite- and xenotime-type orthophosphates on a micrometer scale ...
Christoph Lenz, Christoph Lenz, Gordon Thorogood, Robert Aughterson, Mihail Ionescu, Daniel J. Gregg, Joel Davis, Gregory R. Lumpkin   +7 more
doaj   +1 more source

Structure of a Variscan migmatite-granite transition zone (N Sardinia, Italy)

Journal of Maps, 2023
This paper presents the structural map of the Barrabisa Complex, an E-W ribbon-like migmatitic massif exposed in the northern part of Sardinia. The migmatites consist of metatexites and diatexites with variable melt proportion, grading in the central ...
M. De Luca, N. Ruberti, G. Oggiano, Ph. Rossi, V. Pascucci, L. Casini   +5 more
doaj   +1 more source

Introduction to a Resources Special Issue on Criticality of the Rare Earth Elements: Current and Future Sources and Recycling

, 2018
The rare earth elements (REE) are vital to modern technologies and society and are amongst the most important of the critical elements. This special issue of Resources examines a number of facets of these critical elements, current and future sources of ...
Jowitt, Simon M.
core   +2 more sources

Negligible concentration quenching in transparent silica–rare‐earth orthophosphate glass‐ceramic phosphors

Journal of the American Ceramic Society, Volume 109, Issue 1, January 2026.
Even if the concentration of photoactive centers is high, concentration quenching may be avoided when the concentration of quenching centers is sufficiently low, and excitation migration through photoactive centers and subsequent deactivation at quenching centers is the main quenching mechanism.
Koichi Kajihara
wiley   +1 more source

Release, Migration, Sorption, and (Re)Precipitation of U during Peraluminous Granite Alteration under Oxidizing Conditions in Central Portugal

Geosciences, 2018
In this work, in order to study the release, migration, sorption, and (re)precipitation of uranium (U) during alteration under oxidizing conditions, we carried out a systematic study using scanning electron microscopy, X-ray maps, and electron microprobe
Marina M. S. Cabral Pinto, Maria M. V. G. Silva, Ana M. R. Neiva, Fernanda Guimarães, Paulo B. Silva   +4 more
doaj   +1 more source

Electron microprobe technique for U-Th-Pb and REE chemistry of monazite, and its implications for pre-, peak- and post- metamorphic events of the Lutzow-Holm Complex and the Napier Complex, East Antarctica [PDF]

, 2006
Monazites in high-grade metapelites from the Lutzow-Holm Complex and Napier Complex have been examined in terms of U, Th, Pb and rare earth element (REE) chemistry using an electron microprobe.
Tomokazu Hokada, Yoichi Motoyoshi
core   +1 more source