Results 21 to 30 of about 4,204 (176)
Iraqi Geological Journal, 2023 Gabal El Urf region is located in the northern Egyptian Eastern Desert and overlain essentially by older and younger granitoids of Late Proterozoic age.
Amr Abdel Hamid +3 more
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ON ESTIMATION OF VERTICAL AMPLITUDE OF VEIN PEGMATITE SERIES IN THE NORTHWESTERN BELOMORIE
Transactions of the Karelian Research Centre of the Russian Academy of Sciences, 2016 The article is devoted to the problem of the vertical amplitude of the Belomorian vein fields’ pegmatite genesis which has not been characterized so far.
Николай Дмитриевич Малов +1 more
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Geochemical and Isotope Anomalies in Sioma River Gorge, Western Tajikistan
Radiation, 2021 For a better understanding of the previously observed increased natural radioactivity at the confluence of the Varzob and Sioma rivers, Central Tajikistan, the activity concentration of natural radioactive 40K, Th and U daughters as well as of the ...
Djamshed A. Abdushukurov +3 more
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Frontiers in Earth Science, 2022 Fluid exsolution in magmas is a process that, in many silicic upper crustal reservoirs, starts at relatively low crystallinities (near liquidus), and precedes the precipitation of many ore bodies, including pegmatites.
Ludmila Maria Fonseca Teixeira +3 more
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Data, 2021 The existence of diagnostic features in the visible and infrared regions makes it possible to use reflectance spectra not only to identify mineral assemblages but also for calibration and classification of satellite images, considering lithological and ...
Joana Cardoso-Fernandes +9 more
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The Sveconorwegian Pegmatite Province – Thousands of Pegmatites Without Parental Granites [PDF]
The Canadian Mineralogist, 2017 Abstract The Late-Proterozoic Sveconorwegian pegmatite province in southern Norway and southwest Sweden hosts seven rare-element pegmatite districts with more than 5000 rare-element pegmatites. Most of these pegmatites with Niobium-Yttrium-Fluorine (NYF) signature are not related to a parental granite, but instead occur in areas of high-grade ...
Müller, Axel +2 more
openaire +3 more sources
P-T path fluid evolution in the Gross Spitzkoppe granite stock, Namibia [PDF]
Bulletin of the Geological Society of Finland, 2002 The Gross Spitzkoppe granite stock (GSS) is a zoned 30 km2 epizonal intrusion that consists of three main granites: 1) medium-grained biotite granite (marginal), 2) a coarse-grained biotite granite, and 3) a central, porphyritic granite.
S. Frindt, M. Poutiainen
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Dizhi lixue xuebao, 2022 The Ke'eryin area in Sichuan province is one of the large rare metal ore concentration areas in the Songpan–Garze metallogenic belt. Numerous granite pegmatite dikes spread around the Ke'eryin mass.
TANG Wenchun +5 more
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Геологія і корисні копалини Світового океану, 2023 Pegmatite (sample 13/10) exposed in the valley of the Berezivka River (Krynychuvatka village) was studied and its isotopic age was determined by monazite.
Stepanyuk L.M. +4 more
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Brazilian Journal of Geology, 2021 Two porphyritic granitoids (Huaco and Sanagasta) in the Velasco district of the Pampeana Pegmatite Province in Northwestern Argentina are recognized. They are considered the fertile granites of the beryl-bearing pegmatites and can be described as post ...
Fernando Guillermo Sardi +2 more
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