Fine-Scale Variations in Eucritic Pyroxene FeO/MnO: Process vs. Provenance.

Mittlefehldt, D. W.; Barrett, T. J.; Le, L; Peng, Z. X.; Berger, E. L. and Ross, D. K (2018). Fine-Scale Variations in Eucritic Pyroxene FeO/MnO: Process vs. Provenance. In: 49th Lunar and Planetary Science Conference (LPSC2018), 19-23 Mar 2018, The Woodlands, Houston, Texas, USA.

URL: https://www.hou.usra.edu/meetings/lpsc2018/pdf/270...

Abstract

Most asteroidal igneous rocks are eucrite-like basalts and gabbros, composed mostly of ferroan low- and high-Ca pyroxenes and calcic plagioclase, plus smaller amounts of silica (most commonly tridymite), ilmenite, chromite, troilite, Ca-phosphate, metal and sometimes ferroan olivine. Eucrite-like mafic rocks are fragments of the crusts of differentiated asteroids, and most are likely from 4 Vesta.

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