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Northwest Africa 10689
Basic information Name: Northwest Africa 10689
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 10689
Observed fall: No
Year found: 2016
Country: (Northwest Africa)
Mass:help 88 g
Classification
  history:
Meteoritical Bulletin:  MB 105  (2016)  Mesosiderite
Recommended:  Mesosiderite    [explanation]

This is 1 of 188 approved meteorites classified as Mesosiderite.   [show all]
Search for other: Mesosiderites, Metal-rich meteorites
Comments: Approved 2 Jul 2016
Writeuphelp
Writeup from MB 105:

Northwest Africa 10689 (NWA 10689)

(Northwest Africa)

Purchased: 2016 Feb

Classification: Mesosiderite

History: Purchased by Aras Jonikas in February 2016 from a Moroccan dealer.

Petrography: (A. Irving and S. Kuehner, UWS) Medium-grained aggregate consisting of orthopyroxene, calcic plagioclase, olivine, silica polymorph, kamacite, taenite, ilmenite and chromite. Metal constitutes ~55 vol.% of the specimen.

Geochemistry: Orthopyroxene (Fs34.3-34.4Wo2.7-2.1, FeO/MnO = 22-24, N = 3), olivine (Fa15.4, FeO/MnO = 41; Fa27.3, FeO/MnO = 36), plagioclase (An91.0-95.3Or0.2-0.1, N = 2).

Classification: Mesosiderite.

Specimens: 17.75 g including one polished thin section at PSF; remainder with Mr. A. Jonikas.

Data from:
  MB105
  Table 0
  Line 0:
Place of purchase:Morocco
Date:P 2016 Feb
Mass (g):87.98
Pieces:1
Class:Mesosiderite
Shock stage:low
Weathering grade:low
Fayalite (mol%):15.4; 27.3
Ferrosilite (mol%):34.3-34.4
Wollastonite (mol%):2.7-2.1
Classifier:A. Irving and S. Kuehner, UWS
Type spec mass (g):17.75
Type spec location:PSF
Main mass:A. Jonikas
Comments:AJ16-11; submitted by A. Irving
Institutions
   and collections
PSF: Planetary Studies Foundation,10 Winterwood Lane, Unit B, Galena, Illinois 61036-9283, United States; Website (institutional address; updated 1 Dec 2011)
UWS: University of Washington, Department of Earth and Space Sciences, 70 Johnson Hall, Seattle, WA 98195, United States (institutional address; updated 15 Jan 2012)
Catalogs:
References: Published in Meteoritical Bulletin, no. 105, MAPS 52, 2411, September 2017. http://onlinelibrary.wiley.com/doi/10.1111/maps.12944/full
Find references in NASA ADS:
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Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 6916 approved meteorites from (Northwest Africa) (plus 2027 unapproved names)

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