Shock wave-induced interaction between meteoritic iron and silicates

Autor:	Yu. G. Kupin, D. D. Badjukov, Vyacheslav S. Rusakov
Rok vydání:	2012
Předmět:	Olivine Silicon Analytical chemistry Mineralogy chemistry.chemical_element engineering.material Iron meteorite Silicate Kamacite chemistry.chemical_compound Albite chemistry Geochemistry and Petrology engineering Enstatite Quartz Geology
Zdroj:	Petrology. 20:347-355
ISSN:	1556-2085 0869-5911
DOI:	10.1134/s0869591112040029
Popis:	The possibility of shock wave-induced interaction between meteoritic iron was estimated based on the results of experiments on the shock wave loading of mixtures of kamacite from the Sikhote Alin iron meteorite with quartz, albite, oligoclase, enstatite, olivine, and serpentine. The experimental samples were then examined with the application of optical microscopy, microprobe analysis, and Mossbauer spectroscopy. As a result of shock wave load, the metal was proved to become enriched in Si, while the quartz, albite, and oligoclase melted glasses acquired bivalent Fe ions. The products of our experiments with quartz and feldspar mixtures with kamacite were determined to contain paramagnetic metallic iron, and the surroundings of iron atoms in the silicate constituent of the olivine and enstatite mixtures with kamacite become locally more heterogeneous. Our results indicate that shock waves induce redox reactions between Fe and silicates according to the scheme 2Fe+2 + Si+4 = 2Fe+2 + Si0, where Fe0 and Si0 are iron and silicon in metal and Fe+2 and Si+4 are iron and silicon in the sillimanite matrix.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::603c583910147c02771467c0f644ffad https://doi.org/10.1134/s0869591112040029 Zobrazit plný text záznamu Plný text ve formátu PDF