Results 11 to 20 of about 684 (154)

Thorite inclusions in zircon of the monzogranite, Lower Nubia, SW Egypt [PDF]

open access: yesMineralogia, 2023
This report presents the results of a petrographical and mineralogical (optical microscopy, BSE-EDS image analysis) study of zircon in samples from the Lower Nubian monzogranite.
Hassan Kamaleldin M., Brunarska Irena
doaj   +3 more sources

THORIUM, URANIUM AND RARE EARTH MINERALIZATION IN ROCKS OF THE UGAKHAN GOLD DEPOSIT, BODAIBO ORE REGION [PDF]

open access: yesМинералогия, 2021
The paper reports on the results of studies of ore-bearing rocks of the Ugakhan gold deposit (Bodaybo district): metasandstones, metasiltstones and carbonaceous shales.
E.V. Shepel   +3 more
doaj   +3 more sources

Mineralogy and Mineral Chemistry of the REE-Rich Black Sands in Beaches of the Kavala District, Northern Greece

open access: yesGeosciences, 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
doaj   +4 more sources

Release, Migration, Sorption, and (Re)Precipitation of U during Peraluminous Granite Alteration under Oxidizing Conditions in Central Portugal

open access: yesGeosciences, 2018
In this work, in order to study the release, migration, sorption, and (re)precipitation of uranium (U) during alteration under oxidizing conditions, we carried out a systematic study using scanning electron microscopy, X-ray maps, and electron microprobe
Marina M. S. Cabral Pinto   +4 more
doaj   +2 more sources

TO THE ONTOGENESIS OF AESCHYNITE IN FELDSPAR VEIN NO. 31 OF THE VISHNEVYE GORY, SOUTH URALS [PDF]

open access: yesМинералогия, 2022
Small grains of accessory aeschynite in feldspar vein no. 31 of Vishnevye Mountains (South Urals) co-crystallize with late growth zones of feldspar crystals, as well as with ilmenite, titanomagnetite, muscovite, zircon, monazite, thorite, rutile ...
V.A. Popov, I.A. Blinov, V.I. Popova
doaj   +3 more sources

Chemistry of Hydrothermally Destabilized Rare-Metal and Radioactive Minerals in Deformed A-Type Granite in the Vicinity of Nugrus Shear Zone, South Eastern Desert, Egypt

open access: yesResources
In the Wadi Nugrus area, south Eastern Desert of Egypt, A-type granite is highly deformed in a prominent NW-SE trending shear zone, likely related to the Najd shear system.
Adel A. Surour   +2 more
doaj   +2 more sources

REE-bearing minerals in the Rapakavi Grante, Southern Finland

open access: yesOpen Geosciences, 2015
The studied rock samples belong to the classic1615–1645 Ma Wiborg Rapakivi granite terrane of southeasternFinland. Geochemical studies show that the rapakivigranites and associated rocks form metaluminousto peraluminous A-type granites and plot in the ...
Al-Ani Thair
doaj   +2 more sources

Characteristics of Nigeria Inland Placer and Approaches of Exploration and Development —Take the Rare Polymetallic Placer of Nb-Ta-Sn in Jos Plateau as an Example [PDF]

open access: yesKuangchan zonghe liyong
Rare metal placer deposits and gold placer are scattered in Nigeria's inland region. The spacial order of distribution is belt-like. Placers are of complex compositions.
Haifeng LIU   +5 more
doaj   +2 more sources

Multidisciplinary study of thorium mobility: formation of turkestanite and steacyite analogues, and structural insights using an XRD-directed microcrystal preparation technique. [PDF]

open access: yesActa Crystallogr B Struct Sci Cryst Eng Mater
A novel focused ion beam and scanning electron microscope‐based technique has been developed for mounting microcrystals on carbon fibre, making them immediately compatible with single‐crystal X‐ray diffraction. This method has been successfully applied to studying the crystal chemistry of a synthetic Th‐bearing, Na analogues of turkestanite and ...
Stachowicz M   +7 more
europepmc   +2 more sources

Fastosh: a software for the treatment of XAFS datasets of environmental relevance or acquired in operando conditions. [PDF]

open access: yesJ Synchrotron Radiat
The main functionalities of Fastosh, especially those that are unique to the program, are presented. This notably includes various tools based on chemometry (e.g. MCR‐ALS) and some functions to interprete the Fourier or wavelet transform using a quick‐EXAFS modelling approach.Fastosh is a freeware dedicated to the treatment of X‐ray absorption fine ...
Landrot G, Fonda E.
europepmc   +2 more sources

Home - About - Disclaimer - Privacy