Petrography, mineralogy, and geochemistry of lunar meteorite Sayh al Uhaymir 300

Abstract

Abstract-We report here the petrography, mineralogy, and geochemistry of lunar meteorite

Petrography, mineralogy, and trace element geochemistry of lunar meteorite Dhofar 1180

“…Hill and Boynton (2003) suggested that the KREEP carrier was in the melted matrix rather than in discrete clasts. Mare and KREEP components were not observed in SaU 300 (Hsu et al 2008). Our studies show that Dhofar 1180 contains highlands and mare lithic clast and glasses, but no KREEP components were observed.…”

“…Dhofar 1180 has a bulk Al 2 O 3 content (22.6 wt%, Bunch et al 2006) similar to that of Y-983885, Calcalong Creek (Bunch et al 2006;Korotev et al 2008) and SaU 300 (Hsu et al 2008). In Y-983885, KREEP component occurs as a basalt clast (Arai et al 2005).…”

“…The bulk compositions of Calcalong Creek (Hill and Boynton 2003), Sayh al Uhaymir (SaU) 300 (Hsu et al 2008), as well as data for Yamato 793274 (Koeberl et al 1991), Elephant Moraine (EET) 96008 (Anand et al 2003), Queen Alexandra Range (QUE) 94281 (Jolliff et al 1998), are also listed for comparison. In our Dhofar 1180 sample, only 4.91 wt% Fe (=6.31 wt% FeO) was detected, lower than that (9.3 wt% FeO) reported by Bunch et al (2006), which is probably due to sampling bias.…”

“…CI-normalized (Anders and Grevesse 1989) REE abundances of Dhofar 1180 and some lunar meteorites. Data are from Koeberl et al (1991);Jolliff et al (1998);Anand et al 2003;Hill and Boynton (2003), Karouji et al (2006), andHsu et al (2008). Although impacts could cause melting of target materials, most impact glasses are considered as products of small impacts.…”

“…They provide an important complementary source of data for understanding the nature and evolutionary history of the lunar crust. For instance, some meteorites that were probably derived from the far side of the Moon could provide clues to understand global distribution of rock types (Takeda et al 2006;Hsu et al 2008). Up to date, more than 60 unpaired lunar meteorites have been recovered from hot and cold deserts (Korotev et al 2008).…”