THE METEORITICAL BULLETIN Announcement 85-5, May 23, 2001 Jeffrey N. Grossman, Editor (firstname.lastname@example.org) Jutta Zipfel, Co-editor for Saharan Meteorites (email@example.com) Sayh al Uhaymir 094 20059.469'N 57020.326'E Oman Found 2001 February 8 Martian meteorite (shergottite) A 223.3 g partially crusted stone was found in the same area as Sayh al Uhaymir 005, 008, and 051 by Marc Hauser and Lorenz Moser (Bern) during a search for meteorites. All samples may be paired. Mineralogy and classification (E. Gnos, Institute for Geological Sciences, Bern) and B. Hofmann (NMB): the grey-greenish rock shows a gabbro-like texture and contains phenocrysts of olivine (average maximum dimension = 1.5 mm) displaying shock-twinning, mosaicism, and, locally, oxidation; optically clear parts of olivines (Fo65-69) occur in a fine-grained (average maximum grain size = 0.3 mm) groundmass consisting of maskelynite (An55-64Or5-9) and pigeonite (En60-68Wo7-9) with minor augite, chromite and pyrrhotite; partially recrystallized veins and pockets of shock-melted glass containing vescicles are abundant; x-ray tomography revealed that the specimen contains approximately 0.4 vol% of pores up to 3 mm in size; shock stage, S5; weathering grade, W1; small rusty pockets are Fe-hydroxide replacements of an unknown pre-existing phase. Specimens: all in NMB.
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