Lunar Meteorite: Yamato 793274 & 981031 (paired stones)

Yamato Mountains, Antarctica

Yamato 793274 (8.7). Photo credit: Takeda et al., 1991

Two views of Yamato 091031 (186 g). Photo credit: Randy Korotev

Lab samples of Yamato 981031. The black lines are spaced 2.5 mm apart.  Photo credit: Ryan Zeigler

Yamato 793274 (Y-793274)

Yamato Mountains, Antarctica
Found: 1980 January 3
Mass: 8.7 g (1 piece)

Yamato 981031 (Y-981031)

Yamato Mountains, Antarctica
Found: 1998 December or 1999 January
Mass: 185.8 g (1 piece)

Randy Says…

The Yamato 793274/983885 pairs are anorthosite-bearing (white clasts in photos), basaltic breccias. They are likely launch pairs with QUE 94281, DEW 12007NWA 4884, and the NWA 7611 clan.

More Information

Meteoritical Bulletin Database

Yamato 793274 | 981031

Map: NIPR Location Map

References

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Arai T., Takeda H., and Warren P. H. (1996) Four lunar meteorites: Crystallization trends of pyroxenes and spinelsMeteoritics & Planetary Science 31, 877-892.

Arai T., Ishi T., and Otsuki M. (2002) Mineralogical study of new lunar meteorite Yamato 981031Lunar and Planetary Science XXXIII, abstract no. 2064.

Arai T., Ishi T., and Otsuki M. (2002) A new lunar meteorite Yamato 981031: A possible link between two lunar meteorite source cratersAntarctic Meteorites XXVII, 4-6.

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Eugster O., Michel Th., and Niedermann (1992) Solar wind and cosmic ray exposure history of lunar meteorite Yamato-793274. Proceedings of the NIPR Symposium on Antarctic Meteorites 5, 23-35.

Fritz J. (2012) Impact ejection of lunar meteorites and the age of Giordano BrunoIcarus 221, 1183-1186.

Fukuoka T. (1990) Chemistry of Yamato-793274 lunar meteoritePapers Presented to the Fifteenth Symposium on Antarctic Meteorites, 122-123.

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Koeberl C., Kurat G., and Brandstätter F. (1991) Lunar meteorites Yamato 793274: Mixture of mare and highland components, and barringerite from the MoonProceedings of the NIPR Symposium on Antarctic Meteorites 4, 33-55.

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Korotev R. L, Zeigler R. A., Jolliff B. L., Irving A. J., and Bunch T. E. (2009) Compositional and lithological diversity among brecciated lunar meteorites of intermediate iron compositionMeteoritics & Planetary Science 44, 1287-1322.

Lindstrom M. M. and Martinez R. R. (1990) Lunar meteorite Y793274: A second basaltic breccia. Papers Presented to the 15th Symposium on Antarctic Meteorites, 114-115.

Lindstrom M. M., Mittlefehldt D. W., Martinez R. R., Lipschutz M. J., and Wang M.-S. (1991) Geochemistry of Yamato-82192, -86032 and -793274 lunar meteoritesProceedings of the NIPR Symposium on Antarctic Meteorites 4, 12-32.

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Takeda H., Saito J., Yanai K., and Kojima H. (1991) Consortium reports of lunar meteorite Yamato-793274Proceedings of the NIPR Symposium on Antarctic Meteorites 4, 3­11.

Takeda H., Mori H., Saito J., and Miyamoto M. (1992) Mineralogical studies of lunar mare meteorites EET87521 and Y793274Proceedings of Lunar and Planetary Science, Volume 22, 355-364.

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