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Northwest Africa 10259
Basic information Name: Northwest Africa 10259
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 10259
Observed fall: No
Year found: 2015
Country: (Northwest Africa)
Mass:help 64.9 g
Meteoritical Bulletin:  MB 104  (2015)  Howardite
Recommended:  Howardite    [explanation]

This is 1 of 427 approved meteorites classified as Howardite.   [show all]
Search for other: Achondrites, HED achondrites, and Howardites
Comments: Approved 8 Sep 2015
Writeup from MB 104:

Northwest Africa 10259 (NWA 10259)

(Northwest Africa)

Purchased: 2015

Classification: HED achondrite (Howardite)

History: Purchased by Steve Arnold in Morocco, 2015.

Physical characteristics: Single stone with fusion crust, a broken surface shows many light-colored fragmental clasts, some up to 1-cm, set in a darker-gray groundmass.

Petrography: (C. Agee, UNM) This howardite consists of three lithologies, one is an equilibrated basaltic eucrite (~50%), the second is a cumulate eucrite (~20%), and the third is a diogenite (~30%). Accessory phases include Fe-metal with very low nickel content, ilmenite, troilite, and silica.

Geochemistry: (C. Agee and N. Muttik, UNM) basaltic eucrite low-Ca pyroxene Fs60.4±2.4Wo3.0±1.6, Fe/Mn=31±2, n=4; basaltic eucrite augite Fs29.8±4.5Wo41.8±2.6, Fe/Mn=33±0, n=2; cumulate eucrite low-Ca pyroxene Fs41.4±5.1Wo4.3±2.5, Fe/Mn=32±2, n=3; diogenite low-Ca pyroxene Fs27.5±1.3Wo2.7±0.5, Fe/Mn=28±1, n=3; plagioclase An90.0±1.2, n=5.

Classification: Howardite

Specimens: 13.1 g including a probe mount on deposit at UNM, Steve Arnold holds

Data from:
  Table 0
  Line 0:
Place of purchase:Morocco
Date:P 2015
Mass (g):64.9
Shock stage:high
Weathering grade:low
Ferrosilite (mol%):60.4±2.4, 41.4±5.1, 27.5±1.3
Wollastonite (mol%):3.0±1.6, 4.3±2.5, 2.7±0.5
Classifier:C. Agee, UNM
Type spec mass (g):13.1
Type spec location:UNM
Main mass:Steve Arnold
Comments:Fieldname SA-9; submitted by C. Agee
   and collections
UNM: Institute of Meteoritics MSC03 2050 University of New Mexico Albuquerque NM 87131-1126 USA, United States; Website (institutional address; updated 12 Feb 2015)
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 8744 approved meteorites from (Northwest Africa) (plus 1879 unapproved names)

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