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Northwest Africa 11484 | |||||||||||||||||||||||||||||||
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Basic information | Name: Northwest Africa 11484 This is an OFFICIAL meteorite name. Abbreviation: NWA 11484 Observed fall: No Year found: 2015 Country: Morocco Mass: 21.1 g | ||||||||||||||||||||||||||||||
Classification history: |
This is 1 of 474 approved meteorites classified as LL3. [show all] Search for other: LL chondrites, LL chondrites (type 3), Ordinary chondrites, and Ordinary chondrites (type 3) | ||||||||||||||||||||||||||||||
Comments: | Approved 30 Oct 2017 | ||||||||||||||||||||||||||||||
Writeup |
Writeup from MB 106:
Northwest Africa 11484 (NWA 11484) Morocco Purchased: Nov 2015 Classification: Ordinary chondrite (LL3) History: Purchased at the Verona Mineral Fair by Lucian Cojocaru from a Moroccan dealer. Physical characteristics: Single stone weighing 21.1 g without fusion crust. Petrography: (V. Moggi Cecchi, G. Pratesi, S. Caporal, UniFi) The thin section consists of separated, well-formed chondrules up to 2 mm in diameter, sometimes rimmed with altered metal. Chondrules types are various: PO, GO, poikilitic-PP-poikilitic, POP, B, C; Olivine in PO chondrules is Fa-rich and equilibrated; olivine in GO chondrules is Fa-poor and unequilibrated; the matrix is fine and contains olivine, orthopyroxene and clinopyroxene. Scattered troilite grains, no unaltered metal grains are visible. Geochemistry: All olivine (Fa25.9±8.2, N = 17), Cr2O3=0.14±0.09 (wt%), Fa-rich olivine in PO chondrules (Fa35.5±8.2, N = 11); Fa-poor olivine in GO chondrules (Fa11.3±6.1, N = 6); low-Ca pyroxene (Fs18.9±5.3Wo1.3±0.2, N = 11); clinopyroxene (Fs15.4±0.3Wo31.5±0.8, N = 4); Classification: LL3 Specimens: 5.3 g including one polished thin section at MSN-Fi; main mass with Cojocaru. | ||||||||||||||||||||||||||||||
Data from: MB106 Table 0 Line 0: |
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Institutions and collections |
MSN-FI: Museo di Storia Naturale “La Specola”, Sez. Mineralogia – Sistema Museale dell'Università degli Studi di Firenze
Via Giorgio La Pira, 4 – 50121 Firenze, Italy; Website (institutional address; updated 24 Oct 2022) UniFi: Università degli Studi di Firenze, P.zza S. Marco, 4 - 50121 Firenze, Italy (institutional address; updated 14 Sep 2013) |
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Catalogs: |
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References: | Published in Gattacceca J., Bouvier A., Grossman J., Metzler K., and Uehara M. (2019) Meteoritical Bulletin, no. 106. Meteorit. Planet. Sci. 54 in press.
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Geography: |
Statistics: This is 1 of 2049 approved meteorites from Morocco (plus 31 unapproved names) (plus 1 impact crater) | ||||||||||||||||||||||||||||||
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Revision history: |
This lists important revisions made to data for this record.
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