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Northwest Africa 2425 | |||||||||||||||||||||||||||||||
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Basic information | Name: Northwest Africa 2425 This is an OFFICIAL meteorite name. Abbreviation: NWA 2425 Observed fall: No Year found: 2016 Country: (Northwest Africa) Mass: 810 g | ||||||||||||||||||||||||||||||
Classification history: |
This is 1 of 334 approved meteorites classified as Lunar (feldsp. breccia). [show all] Search for other: Lunar meteorites | ||||||||||||||||||||||||||||||
Comments: | Approved 11 May 2018 | ||||||||||||||||||||||||||||||
Writeup |
Writeup from MB 107:
Northwest Africa 2425 (NWA 2425) (Northwest Africa) Purchased: 2016 Classification: Lunar meteorite (feldspathic breccia) Physical characteristics: Weathered, red caliche stain, dull, no fusion crust, etched by ventifaction. Cut appearance: near-black matrix with gray clasts. Petrography: (P. Warren, UCLA) The rock is a thoroughly polymict lunar highland breccia, mostly plagioclase, with clasts up to 10 mm but dominated by extremely fine-grained chaotic impact debris. A search for regolithic glass spheroids found only one, 0.2 mm, very round and undevitrified. Geochemistry: Mineral compositions and geochemistry: Plagioclase: An95.9+/-1.3 (N=19). Low-Ca pyroxene: Fs33±8Wo4.3±0.9 (N=11), high-Ca pyroxene: Fs17±4Wo40±2 (N=7). Pyroxene FeO/MnO (wt.) averages 55±8 (N=24). Bulk composition results from INAA and fused-bead EPMA include Al2O3 = 27.1 wt%, Mg# = 73 mol%, Th = 0.13 ppm. The glass spheroid is similarly anorthositic (26 wt% Al2O3). Classification: The meteorite is a lunar highland polymict breccia. | ||||||||||||||||||||||||||||||
Data from: MB107 Table 0 Line 0: |
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Institutions and collections |
UCLA: Institute of Geophysics and Planetary Physics, University of California, Los Angeles, CA 90095-1567, United States (institutional address; updated 17 Oct 2011) Gessler: Nicholas Gessler, 2010 Calgary Lane, Los Angeles, CA 90077, United States (private address; updated 7 Jul 2016) |
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Catalogs: |
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References: | Published in Meteoritical Bulletin, no. 107, MAPS 55, 460-462
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Geography: |
Statistics: This is 1 of 9627 approved meteorites from (Northwest Africa) (plus 1865 unapproved names) | ||||||||||||||||||||||||||||||
Also see: |
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Revision history: |
This lists important revisions made to data for this record.
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