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Moon Rock / Mondmeteorit Dho 490 fr.$33 a lunar fragmental breccia

Lunar fragmental breccia Dho 490 fr.$33
Lunar fragmental breccia Dho 490 fr.$33
Item# newitem209471642
Reg.: US-$100.00
Sale: US-$35.00
Size (Weight in gr - dimensions in mm): 
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Lunar Rock Mondmeteorite Dho 490
Clasts include microporphyritic impact melt breccia, gabbroic anorthosites, and large plagioclase feldspars. Feldspar compositions vary from An92 to An98, and olivines from Fa30 to Fa50. Augites are present and some contain pigeonite lamellae. There are no basalts or glassy spherules reported. Accessory minerals include FeNi metal and ilmenite. These two stones contain high Al2O3 and low FeO and Th contents (Korotev, 2006) indicating that Dhofar 490/1084 is a feldspathic highlands breccia with minimal to no basaltic or KREEP components (Fig. 5). This is consistent with the reported feldspathic mineralogy (Russell et al., 2003; Korotev, 2006) ReferenzNasa/MPI Mainz: Matthias Kurz F. Wlotzka; Erich Haiderer, Vienna

Dho 1443: Lunar (anorthositic breccia) History: On April 12, 2001, one stone was found by an anonymous finder in the Dhofar region, Oman. Some years later three further tiny fragments were found within a few feet. The total mass of all stones is 36.7 g.
Physical characteristics: The rock is slightly weathered and relatively dark in hand specimen.
Petrography and mineralogy (A. Bischoff, IfP and E. H. Haiderer, Vienna): typical anorthositic breccia with light anorthositic clasts and abundant impact melt clasts embedded within a tough, partially molten matrix. This mostly devitrified matrix contains abundant vesicles and schlieren. Based on the optical appearance the rock has some similarities with Dhofar 081, however, the coordinates do not favor pairing. Mineral compositions: feldspar ranges from An83–98 with a mean of An94.8 ± 3.5; pyroxene is Fs12–49; mean: Fs30 ± 9; and olivine is Fa19–52; mean: Fa35.5 ± 9. Classification: Lunar (anorthositic breccia). Type specimens: 7.4 g and one polished thin section (IfP, Mün); an anonymous collector holds the main mass.

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