Lunar meteorite (anorthositic fragmental breccia)
A dark grey, crusted stone weighing 34.05 g was found in the Dhofar region of Oman.
Classification and mineralogy (A. Greshake, MNB and M. Kurz, Kurz): meteorite is an anorthositic fragmental breccia consisting of clasts of various lithologies embedded into a glassy, partly devitrified fine-grained matrix; the clast size is generally below 3 mm; vesicles are abundant; feldspar: An96.0-99.3; pyroxene: Fs11.5-35.7Wo8.2-44.9 and olivine: Fa30.6-50.0; augites dominate over Ca-poor pyroxenes and often contain pigeonite exsolution lamellae; accessory phases are Fe-Ni metal and ilmenite; crystalline fragments include microporphyritic impact melt breccias, intersertal impact melt clasts, gabbroic anorthosites, and large feldspar; no mare basalt clasts and no glass spherules have been identified; feldspar generally shows pronounced undulatory extinction and sometimes mosaicism indicating strong shock metamorphism; the meteorite is moderately weathered; gypsum, celestite and calcite occur in cracks and holes; Dhofar 490 may be paired with Dhofar 280 since they were found nearby* and have similar mineralogical characteristics; specimens: 7 g and one thin section, MNB; main mass with anonymous finder.
from The Meteoritical Bulletin, No. 88 (Table 5)
* fide: Siegfried Beutel.
*The reported find locations of Dhofar 490/1084 and Dhofar 081/280/910 are separated by 76 km; the meteorites are not paired.
Compositionally, Dhofar 490/1084 is a typical feldspathic lunar meteorite. My samples of both meteorites are contaminated with terrestrial calcium (calcite, gypsum) to a greater extent than any other lunar meteorite from Oman.
Meteoritical Bulletin Database
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