Chassigny petrogenesis - Melt compositions, intensive parameters, and water contents of Martian (?) magmas

Details Chassigny petrogenesis - Melt compositions, intensive parameters, and water contents of Martian (?) magmas Chassigny petrogenesis - Melt compositions, intensive parameters, and water contents of Martian (?) magmas

Jan 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991gecoa..55..349j&link_type=abstract

Geochimica et Cosmochimica Acta (ISSN 0016-7037), vol. 55, Jan. 1991, p. 349-366.

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77

Inclusions, Meteoritic Composition, Olivine, Petrology, Phase Diagrams, Achondrites, Basalt, Mars Surface, Melts (Crystal Growth), Phase Transformations, Pyroxenes, Meteorites, Chassigny, Achondrites, Stony Meteorites, Petrogenesis, Melts, Composition, Parameters, Water, Mars, Magma, Snc Meteorites, Inclusions, Olivine, Samples, Meteorite, Laboratory Studies, Phases, Electron Microscopy, Mineralogy, Major Elements, Chemistry, Temperature, Crystallization, Pressure, Fugacity, Geothermometry, Parent Bodies, T

Scientific paper

This paper considers petrogenesis of SNC meteorites by examining partially crystallized melt inclusions in cumulus olivine grains in Chassigny meteorite. First, all phases in the Chassigny inclusions were analyzed by electron microprobe, followed by an experimental investigation of the kaersutite/melt equilibria. Results yield the intensive parameters which stabilize igneous kaersutite and the melt compositions that coexist with kaersutite. The results are used to model Chassigny petrogenesis. It is argued that the existence in the Chassigny of hydrous melts and the conditions appropriate for amphibole crystallization suggest the existence on the Chassigny parent body (Mars) of SiO2-rich lavas.

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