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Northwest Africa 11263 | |||||||||||||||||||||||||||||||||
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Basic information | Name: Northwest Africa 11263 This is an OFFICIAL meteorite name. Abbreviation: NWA 11263 Observed fall: No Year found: 2016 Country: Morocco Mass: 281 g | ||||||||||||||||||||||||||||||||
Classification history: |
This is 1 of 77 approved meteorites classified as R3. [show all] Search for other: Rumuruti chondrites, Rumuruti chondrites (type 3) | ||||||||||||||||||||||||||||||||
Comments: | Approved 31 May 2017 | ||||||||||||||||||||||||||||||||
Writeup |
Writeup from MB 106:
Northwest Africa 11263 (NWA 11263) Morocco Purchased: Feb 2016 Classification: Rumuruti chondrite (R3) History: Purchased by Giorgio Tomelleri from a Moroccan dealer. Physical characteristics: Several small fragments with black fusion crusts (total weight 281 g). Petrography: (V. Moggi Cecchi, G. Pratesi, S. Caporali, UniFi): The thin section displays a texture consisting of separated, well-formed chondrules (ranging in diameter 0.3-0.9 mm), sometimes rimmed with pentlandite. Chondrules types are mainly PO, PP and POP; a forsterite-rich PO chondrule is present as well as an enstatite PP chondrule; the matrix is fine and contains olivine, orthopyroxene, clinopyroxene. Among opaque phases the most abundant is pentlandite although Ti-bearing chromite can be occasionally found. Geochemistry: (V. Moggi Cecchi, G. Pratesi, S. Caporali, UniFi): Olivine in POP chondrules (Fa26.8±15.6, N = 15), orthopyroxene (Fs13.3±6.3Wo1.2±0.2, N = 8), clinopyroxene (Fs10.8±0.2Wo44.9±0.8, N = 4). Oxygen isotopes: (I.Franchi, R.Greenwood, OU) δ17O = 5.24 ‰, δ18O = 5.99 ‰, Δ17O = 2.12 ‰. Classification: R3 chondrite Specimens: 20 g including one polished thin section at MSN-Fi; main mass with Tomelleri. | ||||||||||||||||||||||||||||||||
Data from: MB106 Table 0 Line 0: |
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Plots: | O isotopes: | ||||||||||||||||||||||||||||||||
Institutions and collections |
OU: Planetary and Space Sciences
Department of Physical Sciences
The Open University
Walton Hall
Milton Keynes
MK7 6AA
United Kingdom, United Kingdom (institutional address; updated 8 Dec 2011) 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 2082 approved meteorites from Morocco (plus 31 unapproved names) (plus 1 impact crater) | ||||||||||||||||||||||||||||||||
Also see: |
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Revision history: |
This lists important revisions made to data for this record.
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