Olivines of igneous rocks

Krivolutskaya, Nadezhda; Bryanchaninova, N. I.

doi:10.1134/s1070363211060363

Cited by 4 publications

(2 citation statements)

References 3 publications

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“…In addition to the major elements, minor elements such as Ca, Mg, Mn, and Li were also detected, which are common impurities in naturally occurring fayalite and other olivines (Krivolutskaya & Bryanchaninova, 2011). EDS and proton‐induced X‐ray emission (PIXE) analyses are unable to resolve the light elements like Li but largely corroborate the APT results (see Figure S3 in Supporting Information ).…”

Section: Resultsmentioning

confidence: 99%

Visualizing the Distribution of Water in Nominally Anhydrous Minerals at the Atomic Scale: Insights From Atom Probe Tomography on Fayalite

Liu

Taylor

Qafoku

et al. 2022

Geophysical Research Letters

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While the chemical formulas of mantle-derived minerals such as olivine ((Mg,Fe) 2 SiO 4 ) indicate they are anhydrous, they are capable of structurally incorporating small amounts of hydrogen (H) as hydroxyl (OH) (colloquially referred to as water) (Demouchy & Bolfan-Casanova, 2016). At the planetary scale, these nominally anhydrous minerals (NAM) may, in turn, be significant repositories of mantle water. Thus, understanding the occurrence of water in NAM and its incorporation mechanisms has broad implications, from understanding planetary evolution to the determination of Earth's water budget. For instance, the presence of water in NAM influences mantle rheology, lubricating and facilitating the movement of faults via hydrolytic weakening (Sommer et al., 2008), as well as its electrical conductivity (Karato, 1990). Additionally, the insight gained from NAMs on Earth can be utilized to understand the evolution of planetary systems like that of Mars (Peslier, 2010).Quantification of water in NAM has been extensively studied for the last three decades (Bell et al., 2003), though understanding its mode of incorporation is largely ambiguous due to challenges in directly observing the distribution of water at the atomic level. That is, the amount of H in NAM is readily obtained using infrared (IR) spectroscopic, elastic recoil detection analysis (ERDA; Bolfan-Casanova et al., 2018;Withers et al., 2012), and

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Section: Resultsmentioning

confidence: 99%

Visualizing the Distribution of Water in Nominally Anhydrous Minerals at the Atomic Scale: Insights From Atom Probe Tomography on Fayalite

Liu

Taylor

Qafoku

et al. 2022

Geophysical Research Letters

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“…. 상부 지각에서의 바나듐 함 량은 이보다 낮은 약 7 ppm으로 알려져 있다 (Rudnick and Gao, 2005 (Mielke, 1979 (Krivolutskaya and Bryanchaninova, 2011;Moon, 1996) Mineral Formula Major impurities S.G. (Dvoryankina and Pinsker, 1962). Half of Fe 3+ ions in magnetite occupy tetrahedral cation sites (Fetetra), and the other half and Fe 2+ ions occupy octahedral cation sites (Feoct).…”

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confidence: 99%

A Review on Types of Vanadium Deposits and Process Mineralogical Characteristics

Lee¹

2020

ksmer

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Because vanadium mainly exists as a trace element in minerals, vanadium deposit refers to a deposit capable of recovering vanadium from by-products rather than a reserve where vanadium-enriched minerals are locally concentrated. Vanadium deposits are largely divided into four types: VTM, SSV, shale-hosted vanadium, and vanadate deposits. VTM deposits, where vanadium is mostly present in magnetite, is embedded in mafic-ultramafic rocks. Ilmenite often forms exsolution lamellae or intergrowth in magnetite; therefore, it is impossible to upgrade the concentrate to a certain level or higher via further grinding. In-depth mineralogical characterization of ore minerals should be conducted to reduce the content of impurities such as Si, Al, Mg, and Ca in the concentrate. Based on this, subsequent cleaner stages can probably upgrade the vanadium concentrate.

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Typomorphism of rock-forming minerals of Lunar regolith, Luna-16, -20, -24: comparision of sea vs continent vs sea

Makeyev

Bryanchaninova

2021

Georesursy

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The study focuses on the comparison of the chemical and mineral composition of Lunar regolith probes from Luna-16, -20, -24 stations and their the sea-continent environments. Using microprobe JXA-8200 and JSM-5610LV (400 analyses, 50 images, 9 fragments of layer-by-layer core samples) 18 mineral phases and their 12 varieties were diagnosed. The most common are iron-magnesium and calcium-bearing varieties of silicates – anortite, clinopyroxenes and olivine. The typomorphic features of rock-forming minerals in two types of the lunar surface are discussed. The composition of chromespinelids is demonstrated on a triangular prism diagram.

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Olivines of igneous rocks

Cited by 4 publications

References 3 publications

Visualizing the Distribution of Water in Nominally Anhydrous Minerals at the Atomic Scale: Insights From Atom Probe Tomography on Fayalite

Visualizing the Distribution of Water in Nominally Anhydrous Minerals at the Atomic Scale: Insights From Atom Probe Tomography on Fayalite

A Review on Types of Vanadium Deposits and Process Mineralogical Characteristics

Typomorphism of rock-forming minerals of Lunar regolith, Luna-16, -20, -24: comparision of sea vs continent vs sea

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