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Northwest Africa 13462
Basic information Name: Northwest Africa 13462
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 13462
Observed fall: No
Year found: 2020
Country: (Northwest Africa)
Mass:help 277 g
Classification
  history:
Recommended:  Eucrite-melt breccia    [explanation]

This is 1 of 42 approved meteorites classified as Eucrite-melt breccia.   [show all]
Search for other: Achondrites, Eucrites, and HED achondrites
Comments: Approved 11 Nov 2020
Writeuphelp
Writeup from MB 109:

Northwest Africa 13462 (NWA 13462)

(Northwest Africa)

Purchased: Aug 2020

Classification: HED achondrite (Eucrite, melt breccia)

History: The meteorite was bought by the main mass holder from Mohamed Ali Loud, Spain.

Physical characteristics: Dark-grayish rock with some fusion crust.

Petrography: The meteorite displays a fresh dark-grayish interior and is eucrite-melt breccia composed of up to 0.7 mm sized basaltic and mineral clasts set into shock melted matrix. Exsolved pyroxenes and lath shaped calcic plagioclase partly converted into maskelynite are the dominant minerals. The shock melt is mostly recrystallized and some regions show flow textures. Minor phases include silica, FeS, chromite, ilmenite and metallic iron.

Geochemistry: low-Ca pyroxene: Fs67.4±1.1Wo3.3±0.9 (Fs65.5-68.7Wo2.3-5.1, n=13, FeO/MnO=29-32); Ca-pyroxene: Fs24.8±0.4Wo41.8±0.3 (Fs23.7-25.6Wo42.4-41.0, n=13, FeO/MnO=27-31); calcic plagioclase: An89.4±0.6 (An87.8-90.2, n=15)

Data from:
  MB109
  Table 0
  Line 0:
Place of purchase:Spain
Date:P Aug 2020
Mass (g):277
Pieces:1
Class:Eucrite-melt breccia
Shock stage:high
Weathering grade:low
Ferrosilite (mol%):67.4; 24.8
Wollastonite (mol%):3.3; 41.8
Classifier:A. Greshake, MNB
Type spec mass (g):30.4
Type spec location:MNB
Main mass:R. Lenssen
Comments:Submitted by Ansgar Greshake
Institutions
   and collections
MNB: Museum für Naturkunde, Invalidenstraße 43, D-10115 Berlin, Germany (institutional address; updated 24 Dec 2011)
Catalogs:
References: Published in Meteoritical Bulletin, no. 109, in preparation (2020)
Find references in NASA ADS:
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Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 7810 approved meteorites from (Northwest Africa) (plus 1971 unapproved names)

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