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| Northwest Africa 11708 | |||||||||||||||||||||||||||||||||
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| Basic information | Name: Northwest Africa 11708 This is an OFFICIAL meteorite name. Abbreviation: NWA 11708 Observed fall: No Year found: 2016 Country: Morocco Mass:  1104 g | ||||||||||||||||||||||||||||||||
| Classification history: |
This is 1 of 86 approved meteorites classified as CK3. [show all] Search for other: Carbonaceous chondrites, Carbonaceous chondrites (type 3), CK chondrites, CK3 chondrites, and CV-CK clan chondrites | ||||||||||||||||||||||||||||||||
| Comments: | Approved 17 Jul 2018 | ||||||||||||||||||||||||||||||||
| Writeup |
Writeup from MB 107:
Northwest Africa 11708 (NWA 11708) Morocco Purchased: Feb 2016 Classification: Carbonaceous chondrite (CK3) History: A stone weighing 1104 g was purchased by Hichame Mimaghador at the Erfoud market in 2016. Physical characteristics: A single stone covered by fusion crust. Petrography: (V. Moggi Cecchi, G. Pratesi, S. Caporali, UniFi): The thin section displays separated, well-formed chondrules (ranging in diameter from 300 to 700 μm, mean value 350 μm) of different types, in a fine-grained matrix consisting of Fe-rich olivine and orthopyroxene, coarse grained Fe-rich olivine fragments and scattered opaque phases. Chondrule types are mainly PO, with minor POP and PP types. Main minerals are olivine, orthopyroxene, Ca-rich plagioclase and clinopyroxene. Opaques are mainly consisting of troilite and Cr-magnetite, with minor altered kamacite. Geochemistry: (V. Moggi Cecchi, G. Pratesi, S. Caporali, UniFi) Olivine in PO and POP chondrules (Fa1.7±0.2, Fe/Mn = 11.4±1.1, N = 6); Olivine in mineral fragments (Fa38.9±5.3, Fe/Mn = 101.7±10.1, N = 10), Orthopyroxene in POP chondrules (Fs2.5±0.2Wo2.1±0.1, Fe/Mn = 11.5±1.2, N = 15); Matrix orthopyroxene (Fs43.5±3.5Wo1.2±0.2, Fe/Mn = 105.1±1.2, N = 5); fassaite (Fs4.4±0.4En56.6±0.3Wo39.0±0.9, Al2O3 = 6.0 Wt.%, N = 5). Feldspar An95.7Or0.1. Oxygen isotopes: (I. Franchi, R. Greenwood, OU) δ17O = -4.75 ‰, δ18O = -1.14 ‰, Δ17O = -4.15 ‰. Classification: Carbonaceous chondrite (CK3). Moderate weathering. Specimens: A total of 24 g specimen is on deposit at MSN-FI. The main mass is with owner. | ||||||||||||||||||||||||||||||||
| Data from: MB107 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 Meteoritical Bulletin, no. 107, MAPS 55, 460-462
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| Photos: |
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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) | ||||||||||||||||||||||||||||||||
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| Revision history: |
This lists important revisions made to data for this record.
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