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Northwest Africa 14055
Basic information Name: Northwest Africa 14055
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 14055
Observed fall: No
Year found: 2020
Country: Morocco
Mass:help 280 g
Classification
  history:
Recommended:  L4    [explanation]

This is 1 of 1709 approved meteorites (plus 24 unapproved names) classified as L4.   [show all]
Search for other: L chondrites, L chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7)
Comments: Approved 21 Jun 2021
Writeuphelp
Writeup from MB 110:

Northwest Africa 14055 (NWA 14055)

Morocco

Purchased: 2020 Jan

Classification: Ordinary chondrite (L4)

History: Purchased from a Moroccan dealer at the Tucson show

Physical characteristics: (R. Szczuczko) A small blocky stone with black to brown matt fusion crust with regmaglypts on one surface while the others surfaces are relatively fresh, light to tan brown in color with numerous chondrules. The interior is medium brown with minor fractures, very abundant chondrules and metal flecks.

Petrography: (C. Herd, UAb) Optical examination of a thin section shows well-defined chondrules, but no preserved chondrule glass. Low-Ca pyroxene is monoclinic. Olivine has sharp optical extinction with <2° angular variation.

Geochemistry: (C. Herd and A. Locock, UAb) Data obtained by EMP examination of carbon-coated probe mount: Olivine Fa24.6±1.0 (n=66); Low-Ca Pyroxene Fs20.3±2.8Wo1.1±0.8 (n=38).

Classification: Ordinary chondrite, L4

Specimens: Type specimen consisting of 3 fragments totaling 20.2 g is at UAb. Main mass, polished mount and thin section with the owner.

Data from:
  MB110
  Table 0
  Line 0:
Place of purchase:Tucson
Date:P 2020 Jan
Mass (g):280
Pieces:1
Class:L4
Shock stage:S1
Weathering grade:W1.0
Fayalite (mol%):24.6±1.0 (n=66)
Ferrosilite (mol%):20.3±2.8 (n=38)
Wollastonite (mol%):1.1±0.8 (n=38)
Classifier:C. Herd, UAb, and R. Szczuzko
Type spec mass (g):20.2
Type spec location:UAb
Main mass:R. Szczuczko
Comments:Field number 3Z-14; submitted by C. Herd
Institutions
   and collections
UAb: 1-26 Earth Sciences Building, University of Alberta, Edmonton, AB, T6G 2E3, Canada, Canada; Website (institutional address; updated 17 Oct 2011)
Catalogs:
References: Published in Meteoritical Bulletin, no. 110, in preparation (2021)
Find references in NASA ADS:
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Geography:

Morocco
Coordinates:Unknown.

Statistics:
     This is 1 of 1680 approved meteorites from Morocco (plus 25 unapproved names) (plus 1 impact crater)

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