A Silicate Inclusion in Puente del Zacate, a IIIA Iron Meteorite

Details A Silicate Inclusion in Puente del Zacate, a IIIA Iron Meteorite A Silicate Inclusion in Puente del Zacate, a IIIA Iron Meteorite

Sep 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996sci...273.1365o&link_type=abstract

Science, Volume 273, Issue 5280, pp. 1365-1367

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Scientific paper

The IIIA and IIIB iron meteorites are considered to have formed in the cores of asteroids. A silicate inclusion within the IIIA meteorite Puente del Zacate consisting of olivine (Fa_4), low-calcium pyroxene (Fs_6Wo_1), chromium diopside (Fs_3Wo47), plagioclase (An14Or_4), graphite, troilite, chromite, daubreelite, and iron metal resembles inclusions in IAB iron meteorites. The oxygen isotopic composition of the Puente del Zacate inclusion is like chromite and phosphate inclusions in other IIIA and IIIB irons. The Puente del Zacate inclusion may have been derived from the lower mantle of the IIIAB parent asteroid.

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