Results 161 to 170 of about 19,667 (226)

Detection of germline variants in human population chronically exposed to high level natural background radiation in Kerala coast. [PDF]

Genes Environ
Jain V, Saini D, Sabarinathan R, Das B.
europepmc   +1 more source

Asynchronous transfer of magmas and mineralizing fluids in a plutonic-subvolcanic-volcanic plumbing system. [PDF]

Sci Rep
Paoli G, Dini A, Vezzoni S, Ovtcharova M, Rocchi S.   +4 more
europepmc   +1 more source

Environmental and mineralogical studies on the stream sediments of Baltim-El Burullus coastal plain, North Delta, Egypt. [PDF]

Sci Rep
Sallam AM, Faheim AA, El-Elshafiey ZA, Azeem MMA, El Feky MG, Hanfi MY.   +5 more
europepmc   +1 more source

The mantle source of REE-rich alkaline silicate magmas can be enriched by continent-derived sediment subduction. [PDF]

Nat Commun
Qiu KF, Long ZY, Romer RL, Halama R, Williams-Jones AE, Yu HC, Li SS, Wu MQ, Deng J.   +8 more
europepmc   +1 more source

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Monazite begets monazite: evidence for dissolution of detrital monazite and reprecipitation of syntectonic monazite during low-grade regional metamorphism

Contributions To Mineralogy and Petrology, 2007
Back-scattered electron (BSE) imaging and X-ray element mapping of monazite in low-grade metasedimentary rocks from the Paleoproterozoic Stirling Range Formation, southwestern Australia, reveal the presence of distinct, high-Th cores surrounded by low-Th, inclusion-rich rims.
Birger Rasmussen, Janet R Mühling
exaly   +2 more sources

A scheme for the analysis of monazite and monazite concentrates

Analytica Chimica Acta, 1963
Abstract A scheme using ion-exchange methods is described for the analysis of monazites and monazite concentrates. The sample is opened up with concentrated sulphuric acid, and the resultant solution is applied to a column of Zeocarb 225 resin. After phosphate has been washed out, lead, aluminium, titanium, iron, uranium, calcium and magnesium are ...
K.S. Chung, J.P. Riley
openaire   +1 more source

Monazite chemical composition: some implications for monazite geochronology

Contributions to Mineralogy and Petrology, 1999
An investigation of the chemical composition of monazite from a number of localities has been carried out. Samples used include monazites from metamorphic rocks, granitic rocks and a hydrothermal ore deposit. The REE distribution pattern of monazite varies greatly in accordance with its geological environment.
X. K. Zhu, R. K. O'Nions
openaire   +1 more source

Zircon and Monazite as Geochronometers

Mineralogical Journal, 2022
The paper discusses the results of U-Pb isotope dating of monazites and zircons from granitoids formed under PT conditions of granulite and amphibolite facies and gneisses, and crystalline shales that are like xenoliths in these granitoids of the Ukrainian Shield.
openaire   +1 more source

Chlorination of Monazite

Industrial & Engineering Chemistry, 1961
A laboratory scale chlorination of Egyptian monazite sand concentrate was carried out at 900 deg C in a horizontal tube furnace, and the variables affecting the condensation and purity of the thorium chloride produced were studied. In 30 minutes, 97.8% of the monazite content was attacked.
O. M. Hilal, F. A. El. Gohary
openaire   +1 more source

The legacy of monazite processing in Brazil

Radiation Protection Dosimetry, 2005
The exploitation of natural resources containing naturally occurring radionuclides may lead to enhanced levels of radioactive isotope and enhanced potential for exposure to naturally occurring radionuclides in products, by-products, residues or wastes. Such resources include, for instance, monazite, the processing of which, in Brazil, generated a great
Dejanira, da Costa Lauria, Elaine R R, Rochedo   +1 more
openaire   +2 more sources