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Relevant bibliographies by topics / Trace elements zoning

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Journal articles

Academic literature on the topic 'Trace elements zoning'

Author: Grafiati

Published: 25 May 2024

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Journal articles on the topic "Trace elements zoning"

1

Levashova, Ekaterina V., Sergey G. Skublov, and Vladimir A. Popov. "Distribution of Trace Elements Controlled by Sector and Growth Zonings in Zircon from Feldspathic Pegmatites (Ilmen Mountains, the Southern Urals)." Geosciences 11, no. 1 (2020): 7. http://dx.doi.org/10.3390/geosciences11010007.

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The present study contains the detailed ion microprobe data on trace and rare earth elements distribution in the large zircon crystal about 10 × 6 mm in size with distinct growth and sector zonings from Ilmen Mountains feldspathic pegmatite. The zircon crystal morphology is a combination of a prism {110} and a dipyramid {111}. It is found out that the growth sector of the prism {110} generally contains higher concentrations of Th, U, REE, Y, and Nb and exhibits a more gently sloping HREE distribution pattern and a steeper LREE distribution pattern, in contrast to zircon from the growth sector

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2

Jourdan, A. L., T. W. Vennemann, J. Mullis, and K. Ramseyer. "Sector zoning of trace elements and oxygen isotopes in natural quartz crystals." Geochimica et Cosmochimica Acta 70, no. 18 (2006): A298. http://dx.doi.org/10.1016/j.gca.2006.06.605.

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3

Shumyhai, I., V. Konishchuk, V. Martynenko, and P. Dushko. "Agro-ecological processes under conditions of biogeochemical imbalance of molybdenum in agrolandscapes of the Forest-Step zone." Balanced nature using, no. 4 (October 25, 2023): 80–90. http://dx.doi.org/10.33730/2310-4678.4.2023.292730.

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A special place in the theory and practice of landscape geochemistry belongs to biogeochemical zoning. Biogenic migration of substances and chemical elements can rightfully be considered one of the criteria for the typological classification of geochemical landscapes, which is the basis for building a map of geochemical landscapes of Ukraine. The scientific result of zoning is the recognition of spatial boundaries and areas of the territory consisting of connected components with uniform conditions of geochemical migration of chemical elements. With a long-term violation of the ratio between m

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4

Wang, Guoqiang, Xiangmin Li, Dongliang Zhang, Jiyuan Yu, and Yujie Liu. "Genesis of the Yingzuihongshan Tungsten Deposit, Western Inner Mongolia Autonomous Region, North China: Constraints from In Situ Trace Elements Analyses of Scheelite." Minerals 11, no. 5 (2021): 510. http://dx.doi.org/10.3390/min11050510.

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In situ analyses of trace elements and rare-earth elements (REEs) were performed by use of laser ablation-inductively coupled plasma-mass spectrometry (LA-ICP-MS) on scheelite samples from the Yingzuihongshan tungsten deposit in western Inner Mongolia Autonomous Region, China. The contents of trace elements Nb, Ta and Mo of scheelite indicate that the ore-forming fluid is magmatic hydrotherm and is exsolved from highly fractionated granitic melt. The scheelite has high REE contents and ∑REE values, and a very inhomogeneous distribution of REEs exists in different scheelite grains or even in on

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5

Azadbakht, Zeinab, and David R. Lentz. "High-resolution LA-ICP-MS trace-element mapping of magmatic biotite: A new approach for studying syn- to post-magmatic evolution." Canadian Mineralogist 58, no. 3 (2020): 293–311. http://dx.doi.org/10.3749/canmin.1900101.

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ABSTRACT Biotite grains from 22 felsic intrusions in New Brunswick were mapped in situ using a laser ablation-inductively coupled plasma-mass spectrometer (LA-ICP-MS). We investigated the extent to which biotite can retain its magmatic zoning patterns and, where zoning does exist, how it can be used to elucidate early to late stage, syn-magmatic to post-crystallization processes. Although the major element and halogen contents of the examined biotite phenocrysts are homogeneous, two-thirds of the grains display trace-element zoning for Ba, Rb, and Cs. The results also indicated that zoning is

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6

McCurdy, Karr, Norman Russell, and Stephen E. Kesler. "Primary Dispersion of Trace Elements, Fluid Inclusion Zoning, and Alteration Zoning at the Pueblo Viejo Au-Ag Deposit, Dominican Republic." Journal of Geochemical Exploration 25, no. 1-2 (1986): 259–60. http://dx.doi.org/10.1016/0375-6742(86)90060-9.

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7

Hossain, Mobarok, and Pulak Kumar Patra. "Contamination zoning and health risk assessment of trace elements in groundwater through geostatistical modelling." Ecotoxicology and Environmental Safety 189 (February 2020): 110038. http://dx.doi.org/10.1016/j.ecoenv.2019.110038.

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8

Azarenko, Yu A. "Trace elements in the system “soil-plants” and optimization of their use in agrocenoses of the Omsk Irtysh Land." Kormlenie sel'skohozjajstvennyh zhivotnyh i kormoproizvodstvo (Feeding of agricultural animals and feed production), no. 2 (February 1, 2021): 42–61. http://dx.doi.org/10.33920/sel-05-2102-05.

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The data on the content and reserves of trace elements (Mn, Cu, Zn, Co, Mo, B) in soils, reveals patterns of their distribution and quantitative characteristics of relationships in the “soil-plants” system in agrocenoses of the Omsk Irtysh Land have been systematized in the article. The assessment of trace elements in soils and plants has been carried out from the ecological and agrochemical positions. The peculiarities of the intake and accumulation of trace elements in plants depending on zonal soil and climatic conditions have been revealed. Indicators for evaluating the potential of trace

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9

Viana, Rúbia R., Hanna J. Evangelista, and Willem B. Stern. "Chemical zoning of muscovite megacrystal from the Brazilian Pegmatite Province." Anais da Academia Brasileira de Ciências 79, no. 3 (2007): 431–39. http://dx.doi.org/10.1590/s0001-37652007000300007.

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Macroscopically homogenous muscovite plate from the Cruzeiro pegmatite, located in the Eastern Pegmatite Province in Minas Gerais, may show complex distribution patterns of some trace elements. In geochronological and petrological studies, as for example in the distinction of magmatic and post-magmatic mica, the cause of zoning could be taken into consideration. The complex chemical zoning in the studied mica plate can be best explained by growth in an evolving magma followed by alteration due to percolation of hydrothermal fluids. Enrichment of Rb towards the border is interpreted as resultin

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10

MacRae, Colin M., Nicholas C. Wilson, and Joel Brugger. "Quantitative Cathodoluminescence Mapping with Application to a Kalgoorlie Scheelite." Microscopy and Microanalysis 15, no. 3 (2009): 222–30. http://dx.doi.org/10.1017/s1431927609090308.

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AbstractA method for the analysis of cathodoluminescence spectra is described that enables quantitative trace-element-level distributions to be mapped within minerals and materials. Cathodoluminescence intensities for a number of rare earth elements are determined by Gaussian peak fitting, and these intensities show positive correlation with independently measured concentrations down to parts per million levels. The ability to quantify cathodoluminescence spectra provides a powerful tool to determine both trace element abundances and charge state, while major elemental levels can be determined

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