Fe and V oxidation state in chromites formed within the fusion crust of ordinary chondrite meteorites

Name: Fe and V oxidation state in chromites formed within the fusion crust of ordinary chondrite meteorites
Creator: University of Camerino, School of Science and Technology- Geology div, Via Gentile III da Varano, 62032 Camerino, Italy; Universita di Firenze, Dipartimento di Scienze della Terra, Via G la Pira 4, 50121 Firenze, Italy; Universita di Camerino, Dipartimento di Scienze della Terra, Via Gentile III da Varano, 62032 Camerino, Italy
Published: 2028-01-01T00:00:00+08:00

ESRF Portal2028-01-01 更新2026-04-23 收录

矿物学

空间物质热化学

数据链接：

https://doi.esrf.fr/10.15151/ESRF-ES-2227639594 数据链接链接失效反馈

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资源简介：

We propose to study the oxidation state of V and Fe in chromites [(Fe,Mg)(Cr,Al,Ti,V)2O4] formed within the fusion crust of ordinary chondrite meteorites and compare the results with chromites found in the interior of the meteorites. Micro-XAS data collected on the proposed samples can be investigated by comparing pre-edge peaks with those of model compounds with known Fe or V oxidation state and coordination number. The proposed beamline (ID21) is ideal to collect data on samples that display chromite crystals as small as 2-5 micrometres within the fusion crust. The expected results are important in studying the temperature-redox conditions of the incoming meteoroid during atmospheric passage, and also to compare experimental data on meteorites and ceramics obtained during heating experiments using induction heated plasma wind tunnels. For this proposal we plan to measure Fe- and V K-edge XANES data for three ordinary chondrites of H, L and LL group.

提供机构：

University of Camerino, School of Science and Technology- Geology div, Via Gentile III da Varano, 62032 Camerino, Italy; Universita di Firenze, Dipartimento di Scienze della Terra, Via G la Pira 4, 50121 Firenze, Italy; Universita di Camerino, Dipartimento di Scienze della Terra, Via Gentile III da Varano, 62032 Camerino, Italy

创建时间：

2028-01-01