Results 71 to 80 of about 684 (154)

Новые минералы и минеральные разновидности Приазовья: Октябрьский массив [PDF]

, 2009
У агпаїтових фонолітах Октябрьсmко масиву виявлено мінерали, раніше невідомі для Приазовського регіону: Zn- куплетськіт, ніобокуплетськіт, циркофіліт, хендріксит, Na- катаплеіт, серандит, кріоліт, церит-(Це), мінерал ряду флогопіт-тайніоліт, торіаніт і ...
Шарыгин, В.В.
core   +2 more sources

Mineralização de torita associada ao Depósito Madeira (Sn-Nb-Ta), Pitinga, Amazonas, Brasil [PDF]

, 2017
O depósito Madeira (Sn, Nb, Ta) está localizado na mina de Pitinga (norte do Brasil). O depósito é associado à fácies albita granito do Granito Madeira, de tipo A (~1,820 Ma).
Hadlich, Ingrid Weber
core   +1 more source

Natural radioactivity, mineralogy and hazard assessment of syenogranites (ornamental stones) using a statistical approach

Nuclear Engineering and Technology
The study focused on syenogranite and its altered variety, and specifically monitored the activities of 226Ra, 232Th, and 40K using NaI(Tl) gamma-ray spectroscopy.
Sherif A. Taalab, Ahmed M. Ismail, W.M. El Maadawy, Kamal Abdelrahman, Mayeen Uddin Khandaker, Ahmed K. Sakr, Mohamed Y. Hanfi   +6 more
doaj   +1 more source

Formation of nanoscale Th-coffinite

, 2012
U-thorite, (Th,U)SiO4, from Ambohijatrova Masindray, Madagascar, was investigated to understand the behavior of Th and U during recrystallization of amorphous radiation-damaged, (Th,U)-orthosilicates.
Ewing, R.C., Pointeau, V., Deditius, A.P., Zhang, J.M.   +3 more
core  

U–Pb Geochronology of Hydrothermal Monazite from Uraniferous Greisen Veins Associated with the High Heat Production Mount Douglas Granite, New Brunswick, Canada

Geosciences, 2019
A combination of in situ laser ablation inductively coupled plasma–mass spectrometry (LA ICP–MS) analyses guided by Scanning Electron Microscope–Back-Scattered Electron imaging (SEM–BSE) was applied to hydrothermal monazite from ...
Nadia Mohammadi, Christopher R. M. McFarlane, David R. Lentz   +2 more
doaj   +1 more source

Advanced Techniques for Thorium Recovery from Mineral Deposits: A Comprehensive Review

Applied Sciences
Thorium has emerged as a promising alternative to uranium in nuclear energy systems due to its higher natural abundance, favorable conversion to fissile 233U, and reduced generation of long-lived transuranic waste.
Tolganay Atamanova, Bakhytzhan Lesbayev, Sandugash Tanirbergenova, Zhanna Alsar, Aisultan Kalybay, Zulkhair Mansurov, Meiram Atamanov, Zinetula Insepov   +7 more
doaj   +1 more source

Chemical weathering of garnet in Banded Iron Formation:implications for the mechanism and sequence of secondary mineral formation and mobility of elements

, 2019
The chemical weathering of rocks and minerals on the Earth's surface leads to the mobilization and redistribution of elements and has (a) significant control on the chemistry of the soil-hydrosphere-atmosphere system, (b) a profound effect on the ...
Upadhyay, Dewashish, Baidya, Abu Saeed, Pal, Dipak C., Baidya, Abu Saeed; id_orcid   +3 more
core   +1 more source

Deposits of rare earth elements in Canada

FACETS
Canada has large reserves of rare earth elements (REEs) (estimated to be ∼15.2 Mt of REE oxides). It hosts several advanced exploration projects related either to alkaline (peralkaline) silicate complexes or to carbonatites.
Jaroslav Dostal
doaj   +1 more source

Radiological and petrographical investigations of building materials (monzogranite) for environmental applications

Nuclear Engineering and Technology
The current investigation utilized statistical techniques to evaluate the potential radiological risks associated with monzogranite-bearing valuable copper deposits in the El-Regeita area of Egypt.
Mohamed Y. Hanfi, Mohamed H.M. Yousef, Turki Kh Faraj, Mayeen Uddin Khandaker, Ahmed E. Abdel Gawad   +4 more
doaj   +1 more source

Brecciated unit and Th-REE mineralization in the Se-Chahun ore deposit, Bafq mining district, Central Iran

Journal of Economic Geology, 2019
Introduction The Bafq region hosts the most important magnetite-apatite deposits of Iran. The geology of this region has been studied by many researchers (e.g., Haghipour, 1977). The ore deposits are mainly hosted by a volcano-sedimentary unit.
Gholamreza Mirzababaei, Mehrdad Behzadi, Mohammad Reza Rezvanianzadeh, Mohammad Yazdi, Mohammad Ghannadi Maragheh   +4 more
doaj   +1 more source