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Northwest Africa 14672
Basic information Name: Northwest Africa 14672
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 14672
Observed fall: No
Year found: 2015
Country: (Northwest Africa)
Mass:help 134.5 g
Classification
  history:
Recommended:  Martian (shergottite)    [explanation]

This is 1 of 281 approved meteorites (plus 2 unapproved names) classified as Martian (shergottite).   [show all]
Search for other: Martian meteorites
Comments: Approved 19 Feb 2022
Writeuphelp
Writeup from MB 111:

Northwest Africa 14672 (NWA 14672)

(Northwest Africa)

Purchased: 2015

Classification: Martian meteorite (Shergottite)

Petrography: This is an olivine-phyric shergottite with anhedral olivine phenocrysts, pigeonite, augite, and plagioclase.Minor minerals include a silica phase, merrillite, Ti magnetite and Fe sulfide.The meteorite contains fine vesicles (100-200 micrometers) and abundant mesostasis with two distinct textures, one with plagioclase bars and one with olivine dendrites. Shock evidence include the presence of maskelynite and the diverse textures of the fine-grained portions .

Geochemistry: Mineral compositions and geochemistry: R. Hewins. Olivine has a composition of Fo53-15 (FeO/MnO 49.3). There is a continuum of pigeonite/subcacic augite/augite compositions: across a spread of Wo9-43 on the quadrilateral, En decreases from 53 to 15 while Fs increases from 22 to 61. Maskelynite composition is An59-68.

Classification: Martian (shegottite, olivine-phyric).

Specimens: type specimen 20 g at MNHNP. Main mass held anonymously.

Data from:
  MB111
  Table 0
  Line 0:
Place of purchase:Agadir
Date:P 2015
Mass (g):134.5
Pieces:1
Class:Martian (shergottite)
Fayalite (mol%):47-85
Ferrosilite (mol%):22-61
Wollastonite (mol%):9-43
Classifier:R. Hewins, MNHNP
Type spec mass (g):20
Type spec location:MNHNP
Main mass:Luc Labenne
Finder:anonymous
Comments:work name LM AS, received as 180915.; submitted by R. Hewins
Institutions
   and collections
MNHNP: Museum National d'Histoire Naturelle, IMPMC-CP52, 57 rue Cuvier, 75005 Paris, France, France; Website (institutional address)
Labenne: 23, rue de Esperance, 75013 Paris, France; Website (private address; updated 29 Aug 2012)
Catalogs:
References: Published in Meteoritical Bulletin, no. 111, in preparation (2022)
Find references in NASA ADS:
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Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 8559 approved meteorites from (Northwest Africa) (plus 1896 unapproved names)

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