Results 1 to 10 of about 4,767 (148)
The evolution of the Sesia Zone (Western Alps) from Carboniferous to Cretaceous: insights from zircon and allanite geochronology [PDF]
Swiss Journal of Geosciences, 2020 Microscale dating of distinct domains in minerals that contain relics of multiple metamorphic events is a key tool to characterize the polyphase evolution of complex metamorphic terranes. Zircon and allanite from five metasediments and five metaintrusive
Alice Vho +3 more
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Geosciences, 2022 The coastal area of the Kavala district, Northern Greece, is characterized by minerals enriched in rare earth elements (REE). The present study focuses on the mineralogy of the black sands from six different locations and the comprehensive mineral ...
Eftychia Peristeridou +4 more
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REE AND Th MINERALS IN THE METASANDSTONES OF THE UDOKAN BASIN (RUSSIA) [PDF]
Минералогия, 2022 Based on ICP-MS, optical and electron microscopy, and electron back-scatter diffraction data, the paper considers the distribution and the mode of occurrence of REEs and Th in metasandstones of the Lower Proterozoic Sakukan Formation, which host ...
E.V. Belogub +4 more
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A summary of the variations in relative abundance of the lanthanides and yttrium in allanites and epidotes [PDF]
Bulletin of the Geological Society of Finland, 1985 Recalculation of 506 analyses of allanites and 53 analyses of epidotes has confirmed that these minerals preferentially concentrate the light lanthanides, but that the relative concentrations vary considerably with variation of the host rocks, with ...
M. Fleischer
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Yankuang ceshi, 2023 BACKGROUNDIn Liaoning Province, there are limited known types of rare earth deposits, and historically, exploration and evaluation efforts have mainly focused on monazite placer and alkaline rock type rare earth deposits. Less attention has been given to
Xiaoxu SUN +7 more
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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
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Geosciences, 2022 Epidote group minerals are one of the three most abundant kinds of heavy minerals in orogenic sediments, the other two being amphibole and garnet. They resist diagenesis better than amphibole and resist weathering in soils better than garnet.
Mara Limonta +3 more
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MINERAL ASSEMBLAGES OF THE SHISHIM MINE IN THE SOUTHERN URALS [PDF]
Минералогия, 2023 Mineralogy and petrography of complex rocks in area of the Shishim mine in the South Urals is studied. Various skarn assemblages with dominant pyroxene, garnet, vesuvianite, monticellite, chlorite and epidote are developed after gabbroids and granitoids.
V.A. Popov, M.A. Rassomakhin
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Yankuang ceshi, 2023 BACKGROUNDThe demand for rare metals and rare earth elements has been steadily rising as they play an important role in the high-tech industry. In response, there is an urgent need to study the exploration, development, and utilization of them.
Jiandong LIU +8 more
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Georesursy, 2020 The article provides new data on geochemistry and mineralogy of rare-earth elements (REE) in rocks of structural-material complexes of the Bashkir megaanticlinorium, which underwent metamorphic transformations of various nature: contact metamorphism ...
Sergey G. Kovalev +2 more
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