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Northwest Africa 10450
Basic information Name: Northwest Africa 10450
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 10450
Observed fall: No
Year found: 2015
Country: Algeria
Mass:help 19.9 g
Meteoritical Bulletin:  MB 104  (2015)  Martian (shergottite)
Recommended:  Martian (shergottite)    [explanation]

This is 1 of 284 approved meteorites (plus 2 unapproved names) classified as Martian (shergottite).   [show all]
Search for other: Martian meteorites
Comments: Approved 31 Dec 2015
Writeup from MB 104:

Northwest Africa 10450 (NWA 10450)


Purchased: 2015 May

Classification: Martian meteorite (Shergottite)

History: Purchased by Pierre-Marie Pelé in May 2015 from a dealer in Rissani, Morocco. Purportedly found in the same Algerian strewnfield as NWA 2975, located in the Tanezrouft region near the Mali border.

Physical characteristics: A batch of several small, fusion crusted stones.

Petrography: (A. Irving and S. Kuehner, UWS) Intersertal texture. Composed predominantly of zoned clinopyroxene and maskelynite with accessory ilmenite, ulvöspinel and pyrrhotite. Pyroxenes contain sparse melt inclusions consisting of K-rich glass + ulvöspinel + merrillite.

Geochemistry: Pigeonite (Fs33.1-60.2Wo13.7-14.8, FeO/MnO = 31-37, N = 3), high-Ca pyroxene (Fs24.4-47.2Wo32.0-25.2, FeO/MnO = 29-36, N = 3), plagioclase (An41.1-44.5Or2.8-2.4, N = 2).

Classification: Martian (shergottite). Paired with NWA 2975 and many others.

Specimens: 5.29 g stone with one polished face at PSF; remaining material held by Mr. P. Pelé.

Data from:
  Table 0
  Line 0:
Place of purchase:Rissani
Date:P 2015 May
Mass (g):19.89
Class:Martian (shergottite)
Shock stage:high
Weathering grade:low
Ferrosilite (mol%):33.1-60.2; 24.4-47.2
Wollastonite (mol%):13.7-14.8; 32.0-25.2
Classifier:A. Irving and S. Kuehner, UWS
Type spec mass (g):5.29
Type spec location:PSF
Main mass:P. Pelé
Comments:PMP15-1; submitted by A. Irving
   and collections
PSF: Planetary Studies Foundation,10 Winterwood Lane, Unit B, Galena, Illinois 61036-9283, United States; Website (institutional address; updated 1 Dec 2011)
UWS: University of Washington, Department of Earth and Space Sciences, 70 Johnson Hall, Seattle, WA 98195, United States (institutional address; updated 15 Jan 2012)
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 1213 approved meteorites from Algeria (plus 29 unapproved names) (plus 4 impact craters)

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