Mineralogy and Cooling History of FRO90054 Compared to Other Ureilites

Details Mineralogy and Cooling History of FRO90054 Compared to Other Ureilites Mineralogy and Cooling History of FRO90054 Compared to Other Ureilites

Mar 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996lpi....27..221c&link_type=abstract

Lunar and Planetary Science, volume 27, page 221

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Cooling History, Olivine, Reduction, Ureilites

Scientific paper

FRO90054 is a carbon-poor ureilite with mineralogy similar to some lodranites. Calculated cooling rate of the FRO90054 ureilite using Mg/Fe zoning profile of olivine rim by solving the diffusion equation is within the range of other ureilites also determined in this study. This result would support the classification on the basis of oxygen isotope data. Seven ureilites (Fa: 3-25) show similar cooling rate (0.5-6 degrees C/h) and we could not find the relationship between the Fa component of olivine and cooling rate in ureilites. We identified a mineral in interstices of mafic silicates containing high Ni and P contents as schreibersite which is common in reduced lodranites and acapulcoites.

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