Lunar Meteorite: Yamato 793274 & 981031

Paired stones

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, the NWA 7611 clan, and possibly EET 87521/96008. See NWA 7611-clan for more details.

More Information

Meteoritical Bulletin Database

Yamato 793274 | 981031

Map: NIPR Location Map


Arai T. and Warren P. H. (1999) Lunar meteorite Queen Alexandra Range 94281: Glass compositions and other evidence for launch pairing with Yamato 793274Meteoritics & Planetary Science 34, 209-234.

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.

Basilevsky A. T., Neukum G., and Nyquist L. (2010) Lunar meteorites: What they tell us about the spatial and temporal distribution of mare basalts41st Lunar and Planetary Science Conference, abstract no. 1214.

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.

Karouji Y., Oura Y., and Ebihara M. (2002) Chemical composition of lunar meteorites including Yamato 981031Antarctic Meteorites XXVII, 52–54.

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.

Kojima H. and Imae N. (2000) Meteorite Newsletter 9(1), 2.

Korotev R. L. (2005) Lunar geochemistry as told by lunar meteoritesChemie der Erde 65, 297-346.

Korotev R. L. (2013) Siderophile elements in brecciated lunar meteorites44th Lunar and Planetary Science Conference, abstract no. 1028.

Korotev R. L., Jolliff B. L., Zeigler R. A., and Haskin L. A. (2003) Compositional constraints on the launch pairing of three brecciated lunar meteorites of basaltic compositionAntarctic Meteorite Research 16, 152-175.

Korotev R. L., Jolliff B. L., Zeigler R. A., and Haskin L. A. (2003) Compositional evidence for launch pairing of the YQ and Elephant Moraine lunar meteoritesLunar and Planetary Science 34, abstract no. 1357.

Korotev R. L., Irving A. J., and Bunch T. E. (2008) Keeping up with the lunar meteorites – 2008Lunar and Planetary Science XXXIX, abstract no. 1209.

Korotev R. L., Zeigler R. A., Irving A. J., and Bunch T. E. (2009) Keeping up with the Lunar Meteorites – 200940th Lunar and Planetary Science Conference, abstract no. 1137.

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.

Lorenzetti S. and Eugster O. (2002) Noble gas characteristics of lunar meteorite Yamato 981031 paired with basaltic-anorthositic breccia Yamato-793274. Antarctic Meteorites XXVII, 75-76.

Lorenzetti S., Busemann H., and Eugster O. (2005) Regolith history of lunar meteoritesMeteoritics & Planetary Science 40, 315-327.

Mikouchi T. (1999) Mineralogy and petrology of a new lunar meteorite EET96008: Lunar basaltic breccia similar to Y-793274, QUE94281 and EET87521Lunar and Planetary Science XXX, abstract no. 1558.

Sugihara T., Ohtake M., Takeda H., Owada A., Ishii T., Otsuki M., and Takeda H. (2004) Petrology and reflectance spectroscopy of lunar meteorite Yamato 981031: Implications for the source region of the meteorite and remote-sensing spectroscopyAntarctic Meteorite Res. 17, 209–230, National Institute of Polar Research, Tokyo.

Takaoka N. and Yosida Y. (1992) Noble gases in Yamato-793274 and -86032 lunar meteoritesProceedings of the NIPR Symposium on Antarctic Meteorites 5, 36-48.

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.

Tatsumoto, M., and W. R. Premo (1991) U-Pb isotopic characteristics of lunar meteorites Yamato-793274 and Yamato-86032Proceedings of the NIPR Symposium on Antarctic Meteorites 4, 56-69.

Terada K., Sasaki Y., and Sano Y. (2006) In-situ U-Pb dating of phosphates in lunar basaltic breccia Yamato 981031Lunar and Planetary Science XXXVII, abstract no. 1665.

Terada K., Sasaki Y., and Sano Y. (2006) Ion microprobe U-Pb dating of phosphates in very-low-Ti basaltic breccia. 69th Annual Meeting of the Meteoritical Society, abstract no. 5129.

Warren P. H. and Kallemeyn G. W. (1991) Geochemical investigations of five lunar meteorites: Implications for the composition, origin and evolution of the lunar crustProceedings of the NIPR Symposium on Antarctic Meteorites 4, 91-117.

Warren P. H., Ulff-Møller F., and Kallemeyn G. W. (2005) “New” lunar meteorites: Impact melt and regolith breccias and large-scale heterogeneities of the upper lunar crustMeteoritics & Planetary Science 40, 989-1014.

Wolf S. F., Wang M.S., and Lipschutz M. E. (2009) Labile trace elements in basaltic achondrites: Can they distinguish between meteorites from the Moon, Mars, and V-type asteroidsMeteoritics & Planetary Science 44, 891–903.

Yanai K. and Kojima H. (1987) New lunar meteorite: Yamato-793274. Papers Presented to the Twelfth Symposium on Antarctic Meteorites, 17-18.

Yanai K. and Kojima H. (1991) Varieties of lunar meteorites recovered from AntarcticaProceedings of the NIPR Symposium on Antarctic Meteorites 4, 70-90.