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Randy L. Korotev, Ryan A. Zeigler, & Bradley L. Jolliff Do we have a

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Presentation on theme: "Randy L. Korotev, Ryan A. Zeigler, & Bradley L. Jolliff Do we have a"— Presentation transcript:

1 Randy L. Korotev, Ryan A. Zeigler, & Bradley L. Jolliff Do we have a meteorite from the South Pole-Aitken Basin of the Moon?

2 lunar farside %FeO ppm Th 5 10 15 20 2 6 10 12 4 8 feldspathic
highlands feldspathic highlands Clementine Lucey et al. (2000) Lunar Prospector Lawrence et al. (2000) 5 10 15 20 2 6 10 12 4 8 %FeO ppm Th

3 lunar farside %FeO ppm Th 5 10 15 20 2 6 10 12 4 8 SPA SPA Clementine
Lucey et al. (2000) Lunar Prospector Lawrence et al. (2000) 5 10 15 20 2 6 10 12 4 8 %FeO ppm Th

4 all lunar meteorites

5 linear Sm log Sm all lunar meteorites KREEPic basaltic feldspathic

6 linear Sm log Sm all lunar meteorites KREEPic basaltic feldspathic
Calcalong Creek Dhofar 961 basaltic feldspathic

7 nonmare lunar meteorites (i.e., those with <12% FeO)
“KREEP” nonmare lunar meteorites (i.e., those with <12% FeO) SaU 169 anorthosite Dhofar 489

8 nonmare lunar meteorites (i.e., those with <12% FeO)
Dhofar 733

9 nonmare lunar meteorites (i.e., those with <12% FeO)
SaU 169 IMB SaU 169 RB NWA 4472/85 Calcalong Creek Dhofar 961

10 most ferroan anorthosite is An96-97 and 0.8 ± 0.1 µg/g Eu

11 Dhofar 733 Kalahari 008 Yamato 82/86

12

13 nonmare Apollo samples
N = 1860, mg <12% FeO & <30 ppm Sc

14 nonmare Apollo samples with nonmare lunar meteorites
SaU 169

15 increasing phosphates
Na in plagioclase alkali anorthosite KREEP SaU 169 plag increasing phosphates ol & px

16 nonmare Apollo samples
with nonmare lunar meteorites

17 Dhofar 733 Calcalong Creek Dhofar 961

18 Dhofar 961

19 Calc. Cr. Dhofar 961

20 Apollo Mg-suite norites & troctolites Calc. Cr. Dhofar 961

21 probably paired Dhofar 961 – our sample Dhofar 925, 49 g
photos by Norbert Classen

22 big grains of FeNi with composition like IAB irons
1 2 3 4 5 mm big grains of FeNi with composition like IAB irons our sample contains 0.7% metal by mass


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