Origin of howardites, diogenites and eucrites - A mass balance constraint

Details Origin of howardites, diogenites and eucrites - A mass balance constraint Origin of howardites, diogenites and eucrites - A mass balance constraint

Feb 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985gecoa..49..577w&link_type=abstract

Geochimica et Cosmochimica Acta (ISSN 0016-7037), vol. 49, Feb. 1985, p. 577-586.

Other

19

Achondrites, Mass Balance, Meteoritic Microstructures, Stony Meteorites, Crystallization, Feldspars, Olivine, Phase Diagrams, Pyroxenes, Scandium, Meteorites, Howardites, Origin, Diogenites, Eucrites, Achondrites, Mass, Breccias, Basalts, Pyroxene, Cumulates, Petrogenesis, Models, Genesis, Liquids, Formation, Magma, Melting, Parent Bodies, Asteroids, Fractional Crystalization, Regolith, Samples, Meteorite, Comparions

Scientific paper

Two petrogenetic models for the noncumulate-basaltic parts of howardite meteorites are discussed. A mass balance constraint is developed which indicates that more than half of the basaltic components in howardites formed as residual liquids from fractional crystallization of melts that had earlier produced diogentelike pyroxene cumulate components. Other model constriants involving scandium trends, clustering near olivine-pyroxene-plagioclase peritectic, and MgO/(MgO + FeO) ratios are discussed.

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