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Northwest Africa 10320 | |||||||||||||||||||||||||||||||
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Basic information | Name: Northwest Africa 10320 This is an OFFICIAL meteorite name. Abbreviation: NWA 10320 Observed fall: No Year found: 2006 Country: (Northwest Africa) Mass: ![]() | ||||||||||||||||||||||||||||||
Classification history: |
This is 1 of 55 approved meteorites classified as Eucrite-cm. [show all] Search for other: Achondrites, Eucrites, and HED achondrites | ||||||||||||||||||||||||||||||
Comments: | Approved 7 Oct 2015 | ||||||||||||||||||||||||||||||
Writeup![]() |
Writeup from MB 104:
Northwest Africa 10320 (NWA 10320) Morocco Purchased: 2006 Classification: HED achondrite (Eucrite, cumulate) History: A single stone of 73.2 g was found by an anonymous finder in Western Sahara and purchased by Romano Serra at the Bologna Mineral Show in 2006. Physical characteristics: The main mass has no fusion crust. Petrography: (V. Moggi Cecchi, G. Pratesi, S. Caporali, UniFi): A thin section displays a cumulate eucritic texture consisting of large orthopyroxene crystals, 200-250 μm in width, minor clinopyroxene and anorthitic plagioclase. Orthopyroxene crystals occasionally display fine, 3-5 μm wide pigeonite exsolution lamellae. Minor phases include ilmenite, troilite, chromite, and FeNi metal. Geochemistry: (V. Moggi Cecchi, G. Pratesi, S. Caporali, UniFi) Calcic plagioclase An88.7±1.1Or0.5±0.1, n=6; low-Ca pyroxene (Fs54.3±1.3En43.3±1.4Wo2.4±0.2; n=7; Fe/Mn=47.03±0.16); pigeonite (Fs51.2±1.2En40.0±1.5Wo8.8±0.3; n=8; Fe/Mn=34.63±0.13); pigeonite exsolution lamellae in orthopyroxene (Fs40.6±1.5,En38.1±1.4Wo21.3±0.9; n=8; Fe/Mn = 39.41±0.12). Oxygen isotopes: (I.Franchi, R.Greenwood, OU) δ17O = 1.81‰, δ18O = 3.88‰, Δ17O = -0.21‰. Classification: Eucrite-cm with low degree of shock and low degree of weathering. Specimens: A total of 14.6 g specimen and one thin section is on deposit at MSN-FI. The main mass is on deposit at OAM. | ||||||||||||||||||||||||||||||
Data from: MB104 Table 0 Line 0: |
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Plots: | O isotopes: | ||||||||||||||||||||||||||||||
Institutions and collections |
OAM: Museo del Cielo e della Terra
Vicolo Baciadonne 1
40017 San Giovanni in Persiceto ( BO)
Italy
Osservatorio Astronomico e Museo "Giorgio Abetti", San Giovanni Persiceto, Bologna, Italy; Website (institutional address; updated 31 Oct 2012) 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. 104, MAPS 52, 2284, Octover 2017, http://onlinelibrary.wiley.com/doi/10.1111/maps.12930/full
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Geography: |
Statistics: This is 1 of 25 approved meteorites from Morocco, (Northwest Africa) This is 1 of 9305 approved meteorites from (Northwest Africa) (plus 1873 unapproved names) |