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Northwest Africa 13888
Basic information Name: Northwest Africa 13888
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 13888
Observed fall: No
Year found: 2018
Country: Mali
Mass:help 2 kg
Recommended:  H5    [explanation]

This is 1 of 11238 approved meteorites (plus 22 unapproved names) classified as H5.   [show all]
Search for other: H chondrites, H chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7)
Comments: Approved 17 Oct 2021
Writeup from MB 110:

Northwest Africa 13888 (NWA 13888)

Tombouctou, Mali

Purchased: 2018

Classification: Ordinary chondrite (H5)

History: (Ziyao Wang) Purchased by Ziyao Wang from Aziz Habibi in Erfoud, Morocco 2018.

Physical characteristics: (Ziyao Wang) yellow and brownish colored porous flat stone of 2000 g

Petrography: (R. Bartoschewitz, Bart) strong alterated chondritic clasts are set a limonitic terrestrial matrix. The chondritic clasts are composed of gray chondrules (0.3-1.5 mm) in a brown strong weathered matrix with few relict metal and sulphide. The terrestrial limonitic matrix contain individual grains of quartz (rounded and angular), minor terrestrial (Or89Ab11) and chondritic (An13-19Or4-7) feldspar, terrestrial (Fe/Mn39) and chondritic (Fe/Mn15-21) pyroxene, and chondritic olivine.

Geochemistry: (R. Bartoschewitz, Bart, P. Appel and B. Mader, Kiel) Olivine Fa18.2 (17.5-19.3; n=32); poor Ca-pyroxene Fs16.7(15.5-23.6)Wo1.4(0.8-1.8), Fe/Mn=24(20-34; n=42); diopside En49Fs6Wo45 (n=1); plagioclase An13-19Or4-7 (n=5); chromite CRAL=85 FFM=83 (n=1). Taenite Ni=30, Co=0.3 (n=1); FeS Ni<3 (all wt%). Terrestrial components: poor Ca-pyroxene Fs23.5Wo1.5 (Fe/Mn=39; n=1); alkali-feldspar Or89Ab11 (n=2). Magnetic susceptibility (R. Bartoschewitz, Bart) log χ (× 10-9 m3/kg) = 4.62.

Classification: Ordinary chondrite (H5, S1, W5)

Specimens: 31.9 g on deposit at IfP, Ziyao Wang holds the main mass, and 135 g with Bart. Polished thin sections with Bart + IfP

Data from:
  Table 0
  Line 0:
Origin or pseudonym:desert
Place of purchase:Erfoud, Morocco
Date:P 2018
Mass (g):2000
Shock stage:S1
Weathering grade:W5
Fayalite (mol%):18.2±0.4 (n=32)
Ferrosilite (mol%):16.6±1.1 (n=42)
Wollastonite (mol%):1.4±0.2
Magnetic suscept.:4.64
Classifier:R. Bartoschewitz
Type spec mass (g):31.9
Type spec location:IfP
Main mass:Ziyao Wang
Comments:working name WZ103; submitted by R. Bartoschewitz
   and collections
IfP: Institut für Planetologie, Wilhelm-Klemm-Str. 10, 48149 Münster, Germany (institutional address; updated 23 Jan 2012)
Kiel: Geologisches und Mineralogisches Museum, Institut für Geowissenschaften, Christian-Albrechts-Universität Kiel, Ludewig-Mayn-Str. 10, D-24118 Kiel, Germany, Germany (institutional address; updated 13 Sep 2013)
Bart: Bartoschewitz Meteorite Laboratory, Weiland 37, D-38518 Gifhorn, Germany; Website (private address; updated 30 Nov 2019)
References: Published in Gattacceca J., McCubbin F.M., Grossman J., Bouvier A., Chabot N.L., D'Orazio M., Goodrich C., Greshake A., Gross J., Komatsu M., Miao B., and Schrader D. (2022) The Meteoritical Bulletin, No. 110. Meteorit. Planet. Sci. 1-4
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    (Caution, these are of unknown reliability)
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     This is 1 of 6 approved meteorites from Tombouctou, Mali
     This is 1 of 97 approved meteorites from Mali (plus 2 unapproved names)

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