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COPPER‐NICKEL ALLOY IN THE BLANSKO CHONDRITE
Author(s) -
Olsen Edward
Publication year - 1973
Publication title -
meteoritics
Language(s) - English
Resource type - Journals
eISSN - 1945-5100
pISSN - 0026-1114
DOI - 10.1111/j.1945-5100.1973.tb01254.x
Subject(s) - troilite , copper , chondrite , nickel , metal , alloy , metallurgy , electron microprobe , materials science , microprobe , analytical chemistry (journal) , chemistry , mineralogy , meteorite , astrobiology , physics , environmental chemistry
Both Fe and Ni were measured in microprobe analyses of a large copper metal rim that formed by exsolution from a large troilite grain contained within an iron‐nickel metal grain in the H‐group chondrite, Blansko. The Fe content of the copper can be accounted for largely by secondary fluorescence by Cu‐K α of Fe radiation from the adjacent metal, however, fluorescence by Cu‐K β of Ni radiation cannot significantly account for the observed Ni content. Therefore, the copper actually alloys up to 2% Ni, with a concentration gradient dropping to 0.7% away from the copper‐metal interface.