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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 10909 approved meteorites (plus 20 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 Meteoritical Bulletin, no. 110, in preparation (2021)
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Photos uploaded by members of the Encyclopedia of Meteorites.
    (Caution, these are of unknown reliability)
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     This is 1 of 5 approved meteorites from Tombouctou, Mali
     This is 1 of 72 approved meteorites from Mali (plus 1 unapproved name)

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