Petrology and geochemistry of selected nepheline syenites from Malawi and their potential as alternative potash sources [PDF]
, 2020 The Sub Saharan Africa agricultural sector is one of the most disadvantaged regions, partly due to high fertiliser import costs from the northern hemisphere.
Chiwona, Annock +3 more
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Economic Geology, 2021 Mountain Pass is the site of the most economically important rare earth element (REE) deposits in the United States. Mesoproterozoic alkaline intrusions are spatiotemporally associated with a composite carbonatite stock that hosts REE ore ...
K. Watts, G. Haxel, David M. Miller
semanticscholar +1 more source
Alkaline lamprophyres from the Sokli complex, northern Finland [PDF]
Bulletin of the Geological Society of Finland, 1978 Alkaline lamprophyric dykes in the Sokli carbonatite complex closely resemble kimberlites in mineralogical and chemical composition. Mineralogically, they differ from kimberlites by the presence of high-manganese ilmenite and richterite, and the absence ...
H. Vartiainen, P. Kresten, Y. Kafkas
doaj +1 more source
Carbonatite-Related REE Deposits: An Overview
Minerals, 2020 The rare earth elements (REEs) have unique and diverse properties that make them function as an “industrial vitamin” and thus, many countries consider them as strategically important resources.
Zhenyi Wang +4 more
semanticscholar +1 more source
Enrichment of heavy REE and Th in carbonatite-derived fenite breccia
Geological Magazine, 2021 Enrichment of the heavy rare earth elements (HREE) in carbonatites is rare as carbonatite petrogenesis favours the light (L)REE. We describe HREE enrichment in fenitized phonolite breccia, focusing on small satellite occurrences 1–2 km from the Songwe ...
S. Broom-Fendley +7 more
semanticscholar +1 more source
Typomorphic characteristics of apatite morphology of carbonate-bearing variations of complex ores in the context of Kovdor deposit [PDF]
, 2019 Purpose. A comprehensive analysis of apatite morphology in carbonate-bearing variations of complex ores in the context of Kovdor deposit as an important typomorphic characteristic of a mineral being of high genetic and applied informativeness.
Tikhlivets, S, Trunin, O
core +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
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Petrogenetic processes in the ultramafic, alkaline and carbonatitic magmatism in the Kola Alkaline Province: a review [PDF]
, 2005 Igneous rocks of the Devonian Kola Alkaline Carbonatite Province (KACP) in NW Russia and eastern Finland can be classified into four groups: (a) primitive mantle-derived silica-undersaturated silicate magmas; (b) evolved alkaline and nepheline syenites; (
Balaganskaya, E. +4 more
core +1 more source
Nature, 1962 Recently, von Knorring and du Bois described a vesicular lava of high carbonate content from western Uganda which shows close geochemical affinities with intrusive carbonatites. They stated: "It must be emphasized that the lavas examined are fresh and unaltered and that the carbonated nature cannot be attributed to alteration after solidification ...
Wyllie, P. J., Tuttle, O. F.
openaire +2 more sources
The lithospheric mantle and lower crust-mantle relationships under Scotland: a xenolithic perspective [PDF]
, 2011 In the British Isles the majority of volcanic rocks containing upper mantle and lower crustal xenoliths occur in Scotland. Most of the occurrences are of Carboniferous–Permian age.
Arai +17 more
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