Results 31 to 40 of about 14,584 (265)

The Fluorapatite P–REE–Th Vein Deposit at Nolans Bore: Genesis by Carbonatite Metasomatism

, 2020
Nolans Bore is a rare earth element (REE) ore deposit in the Reynolds Range, Aileron Province, Northern Territory, Australia. It consists primarily of fluorapatite and alteration products thereof, surrounded by a diopside-dominated selvage.
M. Anenburg, J. Mavrogenes, V. Bennett
semanticscholar   +1 more source

Geochemistry of Monazite within Carbonatite Related REE Deposits

Resources, 2017
Approximately >50% of global rare earth element (REE) resources are hosted by carbonatite related deposits, of which monazite is one of the most important REE minerals. Monazite dominates more than 30 carbonatite-related REE deposits around the world,
Wei Chen, Huang Honghui, Tian Bai, Shaoyong Jiang   +3 more
doaj   +1 more source

Mafic alkaline metasomatism in the lithosphere underneath East Serbia: evidence from the study of xenoliths and the host alkali basalts [PDF]

, 2010
Effects of mafic alkaline metasomatism have been investigated by a combined study of the East Serbian mantle xenoliths and their host alkaline rocks.
Cvetkovic, V., Downes, Hilary, Hock, V., Lazarov, M., Prelevic, D.   +4 more
core   +1 more source

Carbinatitic magmatism evidence in the Quaternary volcanic rocks in the west of Nowbaran, NW of Iran [PDF]

پترولوژی, 2019
The fourteen numbers of ultrabasic volcanoes eruption in the west of Nowbaran are located in the west margin of Iranian central zone near to the Sanandaj-Sirjan zone.
Bahman Rahimzadeh, Ayoub Veisinia, Michele Lustrino, Samuele Agostini   +3 more
doaj   +1 more source

The Bayan Obo (China) giant REE accumulation conundrum elucidated by intense magmatic differentiation of carbonatite

Geology, 2019
The Bayan Obo deposit in China is endowed with the largest rare earth element (REE) resource in the world. The mechanism resulting in this REE enrichment has been the focus of many studies. Carbonatite is known globally as the most favorable carrier of
Kui-Feng Yang, H. Fan, F. Pirajno, Xiaochun Li   +3 more
semanticscholar   +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, M. O'Neill, R. Brooker, Emily K. Fallon, J. Pickles, D. Banks   +7 more
semanticscholar   +1 more source

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

THE PROBLEM OF CARBONATITES AND CARBONATITE COMPLEXES

Geological Journal, 2016
На підставі аналізів авторських та літературних даних зроблено висновок про те, що первинний склад більшості карбонатитів був лужнокарбонатний типу карбонатитів і туфів вулкану Олдоіньо-Лентаї (з високим вмістом Na2CO3, K2CO3, CaCO3 і підпорядкованим – MgCO3, FeCO3).
openaire   +3 more sources

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