Proton-stimulated redistribution of Fe atoms in quartz: Experimental modeling of the space radiation effect

As is known, both amorphous and crystalline silicates are important constituents of many space objects. The simplest silicate phase, such as quartz and/or more complex SiO2-bearing phases, is rather abundant. For example, SiO2-bearing chondrules are identied in ordinary chondrites. These phases cont...

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Bibliographic Details
Published in:Doklady earth sciences 2006-12, Vol.411 (2), p.1466-1469
Main Authors: Shilobreeva, S. N., Kashkarov, L. L., Barabanenkov, M. Yu, Pustovit, A. N., Zinenko, V. I., Agafonov, Yu. A.
Format: Article
Language:English
Subjects:
Atoms & subatomic particles
Crystallography
Iron
Mineral composition
Protons
Quartz
Radiation
Silica
Silicates
Studies
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Summary:As is known, both amorphous and crystalline silicates are important constituents of many space objects. The simplest silicate phase, such as quartz and/or more complex SiO2-bearing phases, is rather abundant. For example, SiO2-bearing chondrules are identied in ordinary chondrites. These phases contain up to 1 wt % Fe [4]. Quartz was detected in enstatite [5] and iron meteorites [6]. Furthermore, modeling of the mineral composition of interstellar dust has shown that quartz can occur therein along with olivine, native iron, and periclase [7]. Silica polymorphs (cristobalite, tridymite, and quartz) are known on the Moon [7].
ISSN:1028-334X
1531-8354
DOI:10.1134/S1028334X06090297