Origin of alkali-rich volcanic and alkali-poor intrusive carbonatites from a common parental magma [PDF]
Scientific Reports, 2021 The discrepancy between Na-rich compositions of modern carbonatitic lavas (Oldoinyo Lengai volcano) and alkali-poor ancient carbonatites remains a topical problem in petrology.
Ivan F. Chayka +6 more
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Does a carbonatite deposit influence its surrounding ecosystem? [PDF]
FACETS, 2019 Carbonatites are unusual alkaline rocks with diverse compositions. Although previous work has characterized the effects these rocks have on soils and plants, little is known about their impacts on local ecosystems.
James M.C. Jones +5 more
doaj +3 more sources
Mantle Metasomatism and REE Enrichment in the Genetic Source of the Dalucao Carbonatite Complex (Sichuan, China): Insights from Elemental Geochemistry and In-Situ Sr Isotopes of Two Calcite Types [PDF]
Lithosphere, 2023 Carbonatites possess the highest rare earth element (REE) concentrations among all magmatic rocks, yet the mechanisms governing the enrichment of REEs in carbonatites remain enigmatic.
Xiaochao Shu +3 more
doaj +1 more source
NEW DATA ON MINERALOGY OF THE SUGUR COPPER DEPOSIT, SOUTH URALS [PDF]
Минералогия, 2022 The previous and new data on minerals and mineral assemblages of the Sugur copper deposit in the Sugur Mountains of South Urals are summarized. The ores of the deposit host abundant calcite, andradite, diopside, magnetite, chromite and serpentine ...
V.A. Popov +2 more
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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 +2 more
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Geology, geochemistry and geochronology of the Songwe Hill carbonatite, Malawi [PDF]
, 2017 Songwe Hill, Malawi, is one of the least studied carbonatites but has now become particularly important as it hosts a relatively large rare earth deposit.
Brady, Aoife E. +7 more
core +5 more sources
Frontiers in Earth Science, 2021 The 2 Ga-old Ihouhaouene alkaline complex (Western Hoggar, Algeria) is among the oldest known carbonatite occurrences on Earth. The carbonatites are calciocarbonatites hosted by syenites, the predominant rock type in the complex.
A. Djeddi +6 more
doaj +1 more source
UNIQUE ULTRA-RICH RARE METAL ORES OF THE TOMTOR COMPLEX AND PROBLEM OF THEIR GENESIS [PDF]
Минералогия, 2019 Main genetic models of the formation of ultra-rich rare metal ores of the Tomtor deposit (Yakutia) are compared on the basis of their structural-textural features, mineral composition, and geologic setting: 1) reducing epigenesis of laterite weathering ...
A.V. Lapin, A.V. Tolstov, I.M. Kulikova
doaj +1 more source
Geology, petrography and mineralogy of explosive breccias of Sallanlatva, Kola Region
Vestnik MGTU, 2021 The Sallanlatva massif belongs to the group of Paleozoic alkaline-ultrabasic complexes wide spread in the Kola Region (the northwestern part of the Fennoscandian Shield).
Sidorov M. Yu. +2 more
doaj +1 more source
A UNIQUE ORE LOCALITY OF POLYAKOVITE-(Ce) IN THE ILMENY MOUNTAINS, SOUTH URALS – NEW FINDS [PDF]
Минералогия, 2020 A large crystal of the rarest mineral polyakovite was discovered in 2019 in the carbonatitespegmatites of pit № 97 of the Ilmeny Mountains. Bodies of carbonatites, glimmerites, glimmeritespegmatites and carbonatite-pegmatites are located within a small ...
V.A. Popov +2 more
doaj +1 more source