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Carbonates and Sulfates in CI Chondrites: Formation by Aqueous Activity on the Parent Body
Author(s) -
Fredriksson Kurt,
Kerridge John F.
Publication year - 1988
Publication title -
meteoritics
Language(s) - English
Resource type - Journals
eISSN - 1945-5100
pISSN - 0026-1114
DOI - 10.1111/j.1945-5100.1988.tb00894.x
Subject(s) - chondrite , parent body , meteorite , aqueous solution , geology , geochemistry , mineralogy , composition (language) , astrobiology , chemistry , organic chemistry , physics , linguistics , philosophy
— Compositions and morphologies of dolomites, breunnerites, Ca‐carbonates, Ca‐sulfates and Mg, Ni, Na‐sulfates, and their petrologic interrelations, in four CI chondrites are consistent with their having been formed by aqueous activity on the CI parent body. Radiochronometric data indicate that this activity took place very early in Solar‐System history. No evidence for original (“primitive”) condensates seems to be present. However, alteration apparently took place without change in bulk meteorite composition.