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Northwest Africa 13875
Basic information Name: Northwest Africa 13875
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 13875
Observed fall: No
Year found: 2021
Country: (Northwest Africa)
Mass:help 1933 g
Classification
  history:
Recommended:  LL(L)5    [explanation]

This is the only approved meteorite classified as LL(L)5.
Search for other: LL chondrites, LL chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7)
Comments: Approved 10 Apr 2021
Writeuphelp
Writeup from MB 110:

Northwest Africa 13875 (NWA 13875)

(Northwest Africa)

Purchased: 2021 Mar

Classification: LL(L)5

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

Physical characteristics: Grayish rock partly covered with fusion crust.

Petrography: The meteorite shows a light grayish interior and is a brecciated ordinary chondrite with large, still mostly discernable chondrules (apparent mean diameter about 1 mm). The plagioclase grain size is about 60 µm. Some metal and sulfides are present in the matrix. Contains shock melt veins.

Geochemistry: The composition of olivine Fa26.3±0.1 (n=4) and orthopyroxene Fs21.9±0.1 (n=4)Wo1.7±0.1 (n=4) are at the limit between that of L and LL groups.

Classification: Ordinary chondrite LL(L)5. LL group is favored based on magnetic susceptibility, but the mineral composition is somewhat intermediate between L and LL groups, hence the LL(L) classification.

Data from:
  MB110
  Table 0
  Line 0:
Place of purchase:Morocco
Date:P 2021 Mar
Mass (g):1933
Pieces:1
Class:LL(L)5
Shock stage:S2
Weathering grade:W1
Fayalite (mol%):26.3±0.1 (n=4)
Ferrosilite (mol%):21.9±0.1 (n=4)
Wollastonite (mol%):1.7±0.1 (n=4)
Magnetic suscept.:4.17
Classifier:A. Greshake, MNB
Type spec mass (g):28.5
Type spec location:MNB
Main mass:Polandmet
Comments:Submitted by Ansgar Greshake
Institutions
   and collections
MNB: Museum für Naturkunde, Invalidenstraße 43, D-10115 Berlin, Germany (institutional address; updated 24 Dec 2011)
Polandmet: targoniny 30 43445 Dziegielow Poland, Poland; Website (institutional address; updated 7 May 2021)
Catalogs:
References: Published in Meteoritical Bulletin, no. 110, in preparation (2021)
Find references in NASA ADS:
Find references in Google Scholar:
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 7885 approved meteorites from (Northwest Africa) (plus 1958 unapproved names)

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