Origin of the ungrouped achondrite NWA 4518: mineralogy and geochemistry of FeNi-metal

Lorenz, C. A.; Teplyakova, S. N.; Humayun, M.; Ivanova, M. A.; Franchi, I. and Greenwood, R. (2011). Origin of the ungrouped achondrite NWA 4518: mineralogy and geochemistry of FeNi-metal. In: 42nd Lunar and Planetary Science Conference, 7-11 Mar 2011, Houston, TX, USA.

URL: http://www.lpi.usra.edu/meetings/lpsc2011/pdf/1291...

Abstract

Ungrouped achondrite NWA 4518 is an ultramafic breccia with abundant siderophile rich IIA-like metal. Its silicate chemistry is similar to that of WINs, HEDs, and silicate inclusions of IIE irons. Oxygen isotopic composition is nearby IAB-IIICD-WIN.

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