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Rubin 1983
Rubin, A.E. (1983). Impact melt-rock clasts in the Hvittis enstatite chondrite breccia: Implications for a genetic relationship between El chondrites and aubrites. Journal of Geophysical Research 88: doi: 10.1029/JS088iS02p0B293. issn: 0148-0227.

The Hvittis enstatite chondrite breccia contains 5¿2 vol% dark clasts which appear to be impact melt-rocks. The largest clast (Clast A) is 2.5 cm in diameter; it has an igneous texture, no chondrules, and is depleted in metallic Fe, Ni and sulfide. Its fine grain size, low-Ni kamacite and schreibersite, and rare martensite resulted from rapid cooling. The abundance of melt-rock clasts in Hvittis suggests that the breccia resided at its parent body surface. However, the apparent absence of EL chondrites with solar wind-implanted rare gases suggests that the EL parent body was too small to develop a substantial regolith. The bulk composition of Clast A is very similar to that of average ambrites, except for a sevenfold enrichment in S, Cr, and Mn. These elements are concentrated in the sulfides. It thus is possible that the clast was derived from one of the sulfide-rich regions of the Hvittis matrix. If so, then aubrites may be genetically related to EL chondrites.

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Journal
Journal of Geophysical Research
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