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Northwest Africa 14788
Basic information Name: Northwest Africa 14788
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 14788
Observed fall: No
Year found: 2021
Country: (Northwest Africa)
Mass:help 1178 g
Classification
  history:
Recommended:  Iron, ungrouped    [explanation]

This is 1 of 143 approved meteorites (plus 1 unapproved name) classified as Iron, ungrouped.   [show all]
Search for other: Iron meteorites, Metal-rich meteorites, and Ungrouped irons
Comments: Approved 17 Apr 2022
Writeuphelp
Writeup from MB 111:

Northwest Africa 14788 (NWA 14788)

(Northwest Africa)

Purchased: 2021

Classification: Iron meteorite (ungrouped)

History: The meteorite was purchased from a meteorite dealer in Morocco.

Physical characteristics: Orientated individual with black to brownish regmaglypted exterior.

Petrography: Etching of a polished section reveals a very fine octahedrite texture with well-developed Widmanstätten pattern composed of about 10-300 µm wide kamacite bands, taenite, and plessite. Some regions are recrystallized with polygonal kamacite grains. Occasionally, Neumann lines are found. Troilite nodules with daubréelite exsolutions are abundant and often rimmed by schreibersite. Terrestrial alteration occurs along fractures and sulfide inclusions.

Geochemistry: ICP-MS data (V. Debaille, ULB): Ni = 6.42, Co = 0.40, P = 0.57 (all wt%); Cr = 52.9, Cu = 113.0, Ge = 5.25, Ga = 61.56, As = 12.02, Mo = 5.58, Pd = 2.42, Sb = 0.25, Ir = 0.10, Au = 0.80 (all ppm)

Classification: Iron meteorite (ungrouped). Ungrouped based on Ge and Ga contents that do not fit any known iron meteorite group.

Data from:
  MB111
  Table 0
  Line 0:
Place of purchase:Morocco
Date:P 2021
Mass (g):1178
Pieces:1
Class:Iron, ungrouped
Weathering grade:moderate
Classifier:A. Greshake, MNB
Type spec mass (g):20
Type spec location:MNB
Main mass:Philippe Schmitt-Kopplin
Comments:Submitted by Ansgar Greshake
Institutions
   and collections
MNB: Museum für Naturkunde, Invalidenstraße 43, D-10115 Berlin, Germany (institutional address; updated 24 Dec 2011)
ULB: Université libre de Bruxelles Avenue Franklin Roosevelt 50 - 1050 Bruxelles, Belgium (institutional address; updated 27 Sep 2018)
Catalogs:
References: Published in Meteoritical Bulletin, no. 111, in preparation (2022)
Find references in NASA ADS:
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Photos:
CreditPhotos
Public domain photographs:
Ansgar Greshake   
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 8636 approved meteorites from (Northwest Africa) (plus 1884 unapproved names)

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