Fluid precipitation of chromite and feldspar-rich glass in Martian orthopyroxenite ALH84001

Details Fluid precipitation of chromite and feldspar-rich glass in Martian orthopyroxenite ALH84001 Fluid precipitation of chromite and feldspar-rich glass in Martian orthopyroxenite ALH84001

Mar 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997lpi....28..775k&link_type=abstract

Conference Paper, 28th Annual Lunar and Planetary Science Conference, p. 775.

Computer Science

2

Chromites, Feldspars, Glass, Mars Surface, Chemical Composition, Precipitation (Chemistry), Trace Elements, Carbonates

Scientific paper

ALH84001 is a cumulate orthopyroxenite of Martian origin which shows abundant evidence for fluid activities. Trace element abundances in the bulk rock, apatite, and carbonates strongly support that view. Textural relationships and magnetite morphologies additionally suggest that beside carbonates, glass, and phosphates also chromite and silica, and a variety of minor phases associated with them, precipitated from fluids. Trace element abundances have been determined so far in orthopyroxene, apatite, feldspar-rich glass, and carbonates. Here, we report on trace element abundances in feldspar-rich glasses and in chromites.

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