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THE VALDINIZZA METEORITE: MINERALOGY, CHEMISTRY AND MICROTEXTURES
Author(s) -
LeviDonati G. R.,
Jarosewich Eugene
Publication year - 1971
Publication title -
meteoritics
Language(s) - English
Resource type - Journals
eISSN - 1945-5100
pISSN - 0026-1114
DOI - 10.1111/j.1945-5100.1971.tb00400.x
Subject(s) - troilite , meteorite , chondrite , ilmenite , plagioclase , shock metamorphism , geology , geochemistry , olivine , recrystallization (geology) , chromite , mineralogy , mineral , kamacite , chemistry , astrobiology , paleontology , quartz , physics , organic chemistry
The principal data are collected about the fall and the distribution of the fragments of the Valdinizza, Italy, meteorite. A complete individual, weighing 872 g, preserved in the United States National Museum, Washington, D. C., is described in some detail. The mineralogical composition is olivine, Fa 25 ; hypersthene, Fs 23 ; plagioclase, An 10 ; maskelynite; nickel‐iron; troilite; chromite; ilmenite and possibly a phosphate mineral. Valdinizza is a fairly typical hypersthene chondrite, belonging to the type 6 chondrites of Van Schmus and Wood (1967); its structure shows evidence of a period of high‐temperature recrystallization; interesting features of shock‐metamorphism are notable, the microtexture deformations suggesting a high level of stress