Results 41 to 50 of about 13,641 (263)

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

Lithological mapping and spectroscopic studies of carbonatite and clinopyroxenite from Hogenakkal carbonatite complex, India

Applied Computing and Geosciences
The Paleoproterozoic Hogenakkal carbonatite complex, situated within the Mettur shear zone, Southern Granulite Terrain, Tamil Nadu, India, is known for its enigmatic carbonatite-clinopyroxenite association and lithology specific rare earth elements (REE)
Saraah Imran, Sourav Bhattacharjee, Ajanta Goswami, Aniket Chakrabarty   +3 more
doaj   +1 more source

Early carbonatite magmatism at Oldoinyo Lengai volcano (Tanzania): carbonatite–silicate melt immiscibility in Lengai I melt inclusions

Comptes Rendus. Géoscience, 2021
Carbonatites are unusual C-rich alkaline magmas that have been reported throughout the geological record. Nevertheless, there is only one currently active carbonatite system on Earth: Oldoinyo Lengai stratovolcano in northern Tanzania (God’s mountain in ...
France, Lydéric, Brouillet, Florian, Lang, Sarah   +2 more
doaj   +1 more source

Metasomatic ijolite, glimmerite, silicocarbonatite, and antiskarn formation: carbonatite and silicate phase equilibria in the system Na2O–CaO–K2O–FeO–MgO–Al2O3–SiO2–H2O–O2–CO2

Contributions to Mineralogy and Petrology
Silicocarbonatites are carbonatite rocks containing > 20% silicate minerals. Their formation is not well understood due to low silica solubility in carbonatite melts and negligible amounts of silicate minerals on carbonatite melt cotectics at upper ...
M. Anenburg, Jesse B. Walters
semanticscholar   +1 more source

PHOSPHATE-FLUORIDE-CARBONATE MINERALIZATION IN LAMPROITE ROCKS OF THE RYABINOVY PLUTON (CENTRAL ALDAN): MINERALOGICAL AND GEOCHEMICAL FEATURES AND ORIGIN [PDF]

Минералогия, 2017
Carbonate and apatite-fluorite mineral assemblages are studied in lamproite rocks from high-K Ryabinovy intrusive (Central Aldan, Russia). It is concluded that these assemblages are genetically related and belong to the same apatite-fluorite-carbonate ...
I.F. Chayka, A.E. Izokh
doaj  

Rare earth element transport and mineralization linked to fluids from carbonatite systems

Geology
Rare earth elements are critical constituents for modern technologies, and some of their largest natural resource deposits are related to carbonatite systems.
Emanuel A. A. Mororó, M. Berkesi, Z. Zajacz, T. Guzmics   +3 more
semanticscholar   +1 more source

Ore and Geochemical Specialization and Substance Sources of the Ural and Timan Carbonatite Complexes (Russia): Insights from Trace Element, Rb–Sr, and Sm–Nd Isotope Data

Minerals, 2021
The Ilmeno–Vishnevogorsk (IVC), Buldym, and Chetlassky carbonatite complexes are localized in the folded regions of the Urals and Timan. These complexes differ in geochemical signatures and ore specialization: Nb-deposits of pyrochlore carbonatites are ...
I. Nedosekova, N. Vladykin, O. Udoratina, B. Belyatsky   +3 more
semanticscholar   +1 more source

Geology and Geochemistry of the Early Proterozoic Kortejärvi and Laivajoki Carbonatites, Central Fennoscandian Shield, Finland [PDF]

Bulletin of the Geological Society of Finland, 1997
This paper provides for the first time extensive petrological, mineralogical and geochemical data on the early Proterozoic Kortejärvi and Laivajoki carbonatites, northern Finland, which form metamorphosed and highly strained bodies 2 and 4 km long within
J. Nykänen, K. Laajoki, J. Karhu
doaj   +1 more source

The origin and composition of carbonatite-derived carbonate-bearing fluorapatite deposits

Mineralium Deposita, 2020
Carbonate-bearing fluorapatite rocks occur at over 30 globally distributed carbonatite complexes and represent a substantial potential supply of phosphorus for the fertiliser industry.
S. Broom-Fendley, P. Siegfried, F. Wall, Mary O’Neill, R. Brooker, Emily K. Fallon, J. Pickles, D. Banks   +7 more
semanticscholar   +1 more source

Subsolidus processes in the Longonjo and Bailundo carbonatites (Angola) [PDF]

, 2012
Peer ReviewedPostprint (published ...
Alfonso Abella, María Pura, Bambi, Aurora Cuaiela João Mateus, Castellano Calvo, Amaia, Gonçalves, Antonio Olimpio, Melgarejo Draper, Joan Carles   +4 more
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