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Northwest Africa 10319
Basic information Name: Northwest Africa 10319
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 10319
Observed fall: No
Year found: 2006
Country: (Northwest Africa)
Mass:help 7 g
Meteoritical Bulletin:  MB 104  (2015)  Eucrite-cm
Recommended:  Eucrite-cm    [explanation]

This is 1 of 54 approved meteorites classified as Eucrite-cm.   [show all]
Search for other: Achondrites, Eucrites, and HED achondrites
Comments: Approved 7 Oct 2015
Writeup from MB 104:

Northwest Africa 10319 (NWA 10319)

Morocco, (Northwest Africa)

Purchased: 2006

Classification: HED achondrite (Eucrite, cumulate)

History: A single stone of 7 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 cumulate eucrite consisting of large orthopyroxene crystals, 150-200 μm in width, with minor clinopyroxene and anorthitic plagioclase. Some orthopyroxene crystals display very fine (1-2 μm width) pigeonite exsolution lamellae. Minor phases include ilmenite and chromite.

Geochemistry: (V. oggi Cecchi, G. Pratesi, S. Caporali, UniFi) Calcic plagioclase An90.1±1Or0.5±0.1, n=7, pigeonite (Fs49.8±1.6En34.4±.5Wo15.8±0.8; n=8; Fe/Mn=34.99±0.14); low-Ca pyroxene (Fs59.5±1.3En36.7±1.4Wo3.8±0.2; n=7; Fe/Mn=36.98±0.15); pigeonite exsolution lamellae in low-Ca pyroxene (Fs47.1±1.6,En33.8±1.3Wo19.1±0.8; n=9; Fe/Mn = 35.90±0.13). Oxygen isotopes: (I. Franchi, R. Greenwood, OU) δ17O = 1.84 ‰, δ18O = 3.96 ‰, Δ17O = -0.22 ‰.

Classification: Eucrite-cm with low degree of shock and low degree of weathering.

Specimens: A total of 1.4 g specimen and one thin section is on deposit at MSN-FI. The main mass is on deposit at OAM.

Data from:
  Table 0
  Line 0:
Place of purchase:Bologna
Date:P 2006
Mass (g):7
Shock stage:low
Weathering grade:low
Ferrosilite (mol%):59.5±1.3
Wollastonite (mol%):3.8±0.2
Classifier:V. Moggi Cecchi, S. Caporali, G. Pratesi, UniFi
Type spec mass (g):1.4
Type spec location:MSN-FI
Main mass:OAM
Comments:Submitted by Vanni Moggi Cecchi
Plots: O isotopes:  
   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)
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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     This is 1 of 25 approved meteorites from Morocco, (Northwest Africa)
     This is 1 of 9699 approved meteorites from (Northwest Africa) (plus 1854 unapproved names)

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