Results 21 to 30 of about 684 (154)

COARSE-CRYSTALLINE PYRITE OF CENTRAL TIMAN [PDF]

open access: yesМинералогия, 2021
The results of mineralogical, geochemical, X-ray, isotopic and spectroscopic studies of coarse-crystalline pyrite (Kyvvozh Formation, Dimtem’el Creek, Central Timan) are presented. Pyrite is characterized by cubic habit and zonal Co distribution.
R.I. Shaybekov   +5 more
doaj   +1 more source

YTTRIUM RARE-EARTH AND RARE-METAL ACCESSORY MINERALS OF LEUCOGRANITES IN THE ALEYSK ZMEINOGORSK COMPLEX (RUDNY ALTAY)

open access: yesИзвестия Томского политехнического университета: Инжиниринг георесурсов, 2021
The relevance and aim. The study of granitoids confined to the Aleysk Zmeinogorsk complex for the first time revealed the presence of rare accessory minerals of yttrium (priorite, fergusonite) in a sample spot of leucogranites of phase IV.
Konstantin L. Novoselov
doaj   +1 more source

REE AND Th MINERALS IN THE METASANDSTONES OF THE UDOKAN BASIN (RUSSIA) [PDF]

open access: yesМинералогия, 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
doaj   +1 more source

Study of Thorium Mineralization in Choghart Iron Oxide-Apatite Deposit, Bafq District, Central Iran [PDF]

open access: yesمجله علوم و فنون هسته‌ای, 2018
Early Cambrian rhyolite hosts the Choghart iron oxide-apatite (IOA) deposit. The ground radiometric and spectrometric surveys of alteration zone on the margin of the magnetite-apatite ore body show that the radioactive anomaly of thorium occurs in the ...
Kh Khoshnoodi   +3 more
doaj   +1 more source

MINERALOGY AND GEOCHEMISTRY OF CHLORITHOLITES FROM THE NEPRYAKHINO GOLD FIELD, SOUTH URALS [PDF]

open access: yesМинералогия, 2020
The chlorite rocks (chloritolites) exposed in a bedrock of the Mokhovoe boloto (Moss swamp) gold placer (East Uralian Megazone, South Urals), which occurs on ultramafic rocks, are studied.
V.V. Murzin, D.A. Varlamov
doaj   +1 more source

RADIOACTIVITY AND MINERALOGICAL INVESTIGATIONS ON YOUNGER GRANITES OF GABAL SHEIKH EL-ARAB AREA, SOUTHERN SINAI, EGYPT [PDF]

open access: yesDelta Journal of Science, 2006
The younger granites of the studied area vary in composition from monzogranite, syenogranite to alkali feldspar granite. They exhibit silicification, kaolinitization and ferrugination as a result of the post-magmatic hydrothermal alteration.
ABDEL MONEM M. OSMAN   +4 more
doaj   +1 more source

RöENTGENITE-(CE) AND OTHER REE FLUORCARBONATES FROM VEIN no. 35, VISHNEVYE MOUNTAINS, SOUTHERN URALS [PDF]

open access: yesМинералогия, 2019
A mineral assemblage including REE fluorcarbonates (röntgenite-(Ce) Ca2Ce3(CO3)5F3 , parisite-(Ce) CaCe2(CO3 )3F2 , synchisite-(Ce) CaCe(CO3 )2F and bastnäsite-(Ce) Ce(CO3 )F) was discovered at the dumps of the Vein № 35 open pit, Mt.
A.V. Kasatkin   +5 more
doaj   +1 more source

Lithium Isotope Fractionation During Intensive Felsic Magmatic Differentiation

open access: yesGeochemistry, Geophysics, Geosystems, Volume 24, Issue 4, April 2023., 2023
Abstract The Xihuashan and Yaogangxian granitic plutons in South China comprise highly evolved multiphase Li‐rich granites and host quartz‐vein‐type tungsten deposits. The δ7Li values of Phase A (early stage), B (middle stage), and C (late stage) from the Xihuashan pluton are 1.0–1.2‰, 1.1–3.0‰, and 2.4–2.8‰ respectively, increasing through chemical ...
Jie‐Hua Yang   +4 more
wiley   +1 more source

Neutron Total Scattering Data on Uranothorite

open access: yes, 2020
The sofq data of 3 uranothorite samples, coffinite and thorite, collected on NOMAD, SNS ...
Guo, X (via Mendeley Data)
core   +2 more sources

Evaluation of Natural Radioactivity Level in Surface Soil from Bambasi District in Benishangul Gumuz Region, Ethiopia. [PDF]

open access: yesJ Anal Methods Chem
The study assessed the concentration of natural radionuclides in soil samples from the Bambasi district in Ethiopia’s Benishangul Gumuz region using a gamma‐ray spectrometer equipped with a high‐purity germanium (HPGe) detector. The measured activity concentrations of 238U, 232Th, and 40K in soil samples varied from 46.2 ± 2.25 to 88.49 ± 5.73 Bq/kg ...
Kidane YB, Deressu TT, Belete GD.
europepmc   +2 more sources

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