Sayh al Uhaymir 150

Al Ghaba, Oman

Found 2002 October 8

Martian meteorite (basaltic shergottite)

A 107.7 g olive-brown colored stone of relatively angular shape with one small area of thin black-brown fusion crust was recovered on a Miocene fresh-water limestone gravel plateau about 43 km south of Al Ghaba by Rainer and Sven Bartoschewitz. Mineralogy and classification (R. Bartoschewitz, Bart, P. Appel and B. Mader, Kiel): porphyritic texture with olivine phenocrysts up to 2 mm (Fo_67–64) set in a matrix consisting of feldspathic glass (An_{53– 66}Or_0.3–0.8) and pigeonite (En_62–69Wo_7–11) with minor Ca-poor pyroxene (En_65–66Fs_34–35). Shock melt veins and pockets are partly recrystallized. Shock stage, S5. Oxygen isotopic composition (R.N. Clayton, UChi): δ¹⁷O = +2.78‰, δ¹⁸O = +4.74‰, they fall in the SNC field. SaU 005, 008, 051, 060, and 094 were found in the same area and may be paired. Specimens: 17.7 g Muzeum Ziemi PAN, al. Na Skarpie 27, PL- Warszawa, 2.7 g Kiel, main mass Bart.