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| Northwest Africa 14505 | |||||||||||||||||||||||||||||||
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| Basic information | Name: Northwest Africa 14505 This is an OFFICIAL meteorite name. Abbreviation: NWA 14505 Observed fall: No Year found: 2005 Country: Morocco Mass:  24.4 kg | ||||||||||||||||||||||||||||||
| Classification history: |
This is 1 of 470 approved meteorites (plus 2 unapproved names) classified as CV3. [show all] Search for other: Carbonaceous chondrites, Carbonaceous chondrites (type 3), CV chondrites, and CV-CK clan chondrites | ||||||||||||||||||||||||||||||
| Comments: | Approved 15 Dec 2021 | ||||||||||||||||||||||||||||||
| Writeup |
Writeup from MB 110:
Northwest Africa 14505 (NWA 14505) Morocco Purchased: 2005 Classification: Carbonaceous chondrite (CV3) History: Sample was purchased from A. Aaronson at the Denver Show in 2005who acquired it from Morocco. Sample is catalogued at the Royal Ontario Museum as M59753 Physical characteristics: Large single specimen displaying moderate desert polish modification to fusion crust (2/3 of its surface) and weathered broken surfaces. Chondrules and CAIs readily visible. Several subparallel weathered 1 mm fractures pass through the meteorite. Petrography: Cut endpiece surfaces and a thin section show abundant, well defined chondrules (40 vol%) with average diameter 0.72 mm (n = 28), set in a dark-gray matrix (55 vol%) which also contains CAIs (<5 vol%) and 5 vol% AOAs. Porphyritic (PO, POP) chondrules are most common. Olivine in chondrules exhibits sharp extinction. In BSE images, olivine commonly shows Fe-Mg zoning. Metal is absent, and magnetite occurs as subhedral inclusions in chondrules and as rounded clusters (up to 30 micrometres) of finer grains in the matrix. Geochemistry: EPMA: Olivine: Fa25.04±18.14 (n=30), with chondrule olivine: Fa8.20±10.90 (n=11); Ca-poor pyroxene: Fs1.60±0.95 En97.55±0.89 Wo0.85±0.21 (n=17); Ca-rich pyroxene: Fs0.94±0.37En58.08±4.26Wo40.98±4.32 (n=12). Magnetite compositions (wt%): Cr2O3=1.33±0.33, TiO2=0.03±0.01, NiO=0.07±0.04, Al2O3=1.06±0.27 (n=22) Classification: CV3 (S1) Moderately Weathered: Chondrule size, abundance,chondrule olivine compositions with Fa<15, and magnetite compositions indicate that this meteorite is a CV3 and not CK. Specimens: Type specimen: ROM. Main mass: D. Gregory | ||||||||||||||||||||||||||||||
| Data from: MB110 Table 0 Line 0: |
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| Institutions and collections |
ROM: Royal Ontario Museum, 100 Queen's Park, Toronto, Ontario M5S 2C6, Canada (institutional address; updated 18 Oct 2011) Aaronson: Sahara Overland Ltd., Harhora, Temara, 12000, Morocco (private address; updated 3 Jan 2010) DGregory: David Gregory, 230 First Avenue, Suite 108, St. Thomas, Ontario N5R 4P5, Canada (private address) |
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| References: | Published in Gattacceca J., McCubbin F.M., Grossman J., Bouvier A., Chabot N.L., D'Orazio M., Goodrich C., Greshake A., Gross J., Komatsu M., Miao B., and Schrader D. (2022) The Meteoritical Bulletin, No. 110. Meteorit. Planet. Sci. 1-4
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Geography:
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Statistics: This is 1 of 2082 approved meteorites from Morocco (plus 31 unapproved names) (plus 1 impact crater) | ||||||||||||||||||||||||||||||
| Also see: |
This lists the most popular meteorites among people who looked up this meteorite.
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| Revision history: |
This lists important revisions made to data for this record.
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