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Northwest Africa 11470
Basic information Name: Northwest Africa 11470
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 11470
Observed fall: No
Year found: 2017
Country: Western Sahara
Mass:help 288 g
Meteoritical Bulletin:  MB 106  (2018)  L3
Recommended:  L3    [explanation]

This is 1 of 787 approved meteorites (plus 1 unapproved name) classified as L3.   [show all]
Search for other: L chondrites, L chondrites (type 3), Ordinary chondrites, and Ordinary chondrites (type 3)
Comments: Approved 13 Oct 2017
Writeup from MB 106:

Northwest Africa 11470 (NWA 11470)

Western Sahara

Purchased: August 2017

Classification: Ordinary chondrite (L3)

History: Purchased from Aadel Bouzada in August of 2017 in Morocco. Reportedly found in Western Sahara in December 2016. Nomads found the specimen while they were searching between Anzarane and Dakhla for the NWA 7034 strewn field.

Physical characteristics: Single stone, weathered exterior with many chondrules exposed. Saw cut reveals numerous densely packed chondrules in a dark-gray groundmass. Scattered, irregular, light colored clasts were also observed.

Petrography: (C. Agee, UNM) Microprobe examination of a polished mount shows may porphyritic chondrules, average apparent chondrule diameter 610±340 μm (n=20). Opaque, fine grained matrix present.

Geochemistry: (C. Agee and A. Santos, UNM) Olivine Fa15.9±7.8, Mn/Fe=60±25, Cr2O3=0.08±0.06 wt%, n=19; low Ca pyroxene Fs9.2±8.0Wo0.8±1.0, n=8.

Classification: Ordinary chondrite (L3), estimated subtype ~3.3.

Specimens: 20 g on deposit at CSFK, Zsolt Kereszty holds the main mass.

Data from:
  Table 0
  Line 0:
Place of purchase:Morocco
Date:P August 2017
Mass (g):287.6
Shock stage:S3
Weathering grade:W2
Fayalite (mol%):15.9±7.8
Ferrosilite (mol%):9.2±8.0
Wollastonite (mol%):0.8±1.0
Classifier:C. Agee, UNM
Type spec mass (g):20
Type spec location:CSFK
Main mass:Zsolt Kereszty
Comments:Field name ZK-11; submitted by C. Agee, UNM
   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)
CSFK: Research Center for Astronomy and Earth Sciences, H-1121 Budapest, Konkoly Thege Miklós út 15-17.l Hungary, Hungary (institutional address; updated 7 Apr 2015)
References: Published in Gattacceca J., Bouvier A., Grossman J., Metzler K., and Uehara M. (2019) Meteoritical Bulletin, no. 106. Meteorit. Planet. Sci. 54 in press.
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Zsolt Kereszty   

Western Sahara

     This is 1 of 254 approved meteorites from Western Sahara (plus 20 unapproved names)

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