Northwest Africa 032 and Northwest Africa 479 are paired meteorites
Location: Morocco, near
Algerian border, near 30º22'N 5º3'W (NWA032); Morocco (NWA479)
Find location map (NWA032)
TKW: 156 g
Found: October 2000 (NWA032) November 2000 (NWA479)
Type: Lunar meteorite (mare basalt)
Description of NWA 032 from Meteoritical Bulletin 84: A stone of ~300 g was found in the desert (see Table 9). Classification and mineralogy (T. Fagan, UHaw; T. Bunch and J. Wittke, NAU): olivine, pyroxene, and chromite phenocrysts occur in a groundmass of elongate, zoned pyroxene (En1-25Wo15-25) and feldspar (~An85) crystals radiating from common nucleation sites; opaque phases include elongate, skeletal ilmenite, troilite, and trace metal; olivine phenocrysts (~12 vol%) up to 300 µm are zoned from Fo65 (cores) to Fo60 (rims), and commonly have chromite inclusions; pyroxene phenocrysts (~5 vol%) are complexly zoned, with En40-50Wo20-40 and En15-25Wo10-20 domains; both olivine and pyroxene phenocrysts surrounded by Fe-rich quenched margins (olivines, ~Fo30; pyroxenes, En5-25Wo15-30); glass with ~45.7 wt% SiO2 occurs in semi-continuous shock veins up to 50 µm wide; some terrestrial weathering products are present in fractures, but primary assemblage is essentially unaltered. Oxygen isotope compositios (R. Clayton, UChi): d18O = +5.63 ‰, d17O = +2.92‰. Bulk composition (in wt%, E. Jarosewich, SI): SiO2 = 44.7; TiO2 = 3.08; Al2O3 = 8.74; FeO = 23.0; MnO = 0.33; MgO = 8.45; CaO = 10.9; Na2O = 0.37; K2O = 0.11; H2O = 0.06. Specimens: type specimen, ~5-6 g, contact T. Bunch, NAU; 1.1 g plus thin section, UHaw; main mass, 260 g, Radomsky.
Description of NWA 479 from Meteoritical Bulletin 85: A 156 g stone was collected in Morocco in the area of Khter n'Aït Khebbach, however, the exact location is unknown. Classification and mineralogy (J-A. Barrat, UAng; A. Jambon, UPVI; Violaine Sautter, MNHNP; Ph. Gillet, ENSL): consists of phenocrysts of olivine, pyroxene and chromite in a groundmass of pyroxene and calcic plagioclase; texture closely resembles that of NWA 032 (See MetBul 84).
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| # NWA032-040 | # NWA032-066 | # NWA479-280 | ABOUT SCALE Each photo has a small cube one centimeter on a side. The photo above gives you an idea how big it is. The ruler is in inches at the top. The coin is a US dime. If you are interested in a specimen, I will be happy to send you the dimensions or a photo with different scale. |
| Weight: 40 mg | Weight: 66 mg | Weight: 280mg | |
| Features:Part slice. | Features:Part slice. | Features:Part slice. | |
| sold | sold | sold |
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