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Chondrule precursor minerals as anhydrous phases
Author(s) -
MAHARAJ SUSAN V.,
HEWINS ROGER H.
Publication year - 1998
Publication title -
meteoritics and planetary science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.09
H-Index - 100
eISSN - 1945-5100
pISSN - 1086-9379
DOI - 10.1111/j.1945-5100.1998.tb01694.x
Subject(s) - chondrule , anhydrous , allende meteorite , dehydration , mineralogy , mineral , geology , vesicle , flash (photography) , materials science , meteorite , chemistry , chondrite , astrobiology , metallurgy , optics , physics , organic chemistry , biochemistry , membrane
— Chondrules might be generated from hydrous or anhydrous precursor minerals, but vesicles due to dehydration during melting are absent in natural chondrules. The occurrence of vesicles in experimental charges made from serpentine‐rich starting material that was (a) flash heated and remelted several times, (b) melted for long durations and (c) melted in a vacuum has been studied in order to test whether vesicles could be eliminated in chondrules made from hydrous precursors. High percentages of vesicles in all experiments indicate that chondrules, whether melted once, multiple times, for a brief or extended period, at solar nebula or higher pressure, were made from anhydrous phases.