header
  MetSoc Home            Publications            Contacts  
Search the Meteoritical Bulletin Database
Last update: 14 Sep 2021
Search for: Search type: Search limits: Display: Publication:
Names
Text help
Places
Classes
Years
Contains
Starts with
Exact
Sounds like
NonAntarctic
Falls  Non-NWAs
What's new
  in the last:
Limit to approved meteorite names
Search text:  
Northwest Africa 14107
Basic information Name: Northwest Africa 14107
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 14107
Observed fall: No
Year found: 2021
Country: (Northwest Africa)
Mass:help 43.2 g
Classification
  history:
Recommended:  Martian (shergottite)    [explanation]

This is 1 of 260 approved meteorites (plus 1 unapproved name) classified as Martian (shergottite).   [show all]
Search for other: Martian meteorites
Comments: Approved 24 Jul 2021
Writeuphelp
Writeup from MB 110:

Northwest Africa 14107 (NWA 14107)

(Northwest Africa)

Purchased: 2021

Classification: Martian meteorite (Shergottite)

History: Purchased from a north African meteorite dealer in 2021.

Physical characteristics: Single stone with no fusion crust, the exterior surface has olivine phenocrysts as dark colored high relief grains set in light brown groundmass. Freshly broken surface on the deposit sample reveals a porphyritic texture with dark gray olivine phenocrysts set in a light gray groundmass. Small shiny maskelynite grains are macroscopically visible.

Petrography: (A. Ross and C. Agee, UNM) This meteorite has the approximate modal abundances: 55% pigeonite, 20% olivine, 10% maskelynite, with accessory ilmenite, chromite, and troilite. Pyroxenes are compositionally homogeneous pigeonite. Olivine phenocrysts are also homogeneous and typically 1-2 mm in size. Pyroxene grains are often finer-grained adcumulate textures. Maskelynite is usually observed occupying pyroxene and olivine grain boundary pockets.

Geochemistry: (A. Ross, UNM) Olivine Fa35.3±1.5, Fe/Mn=53±2, CaO=0.27±0.06, (wt%), n=10; pyroxene Fs25.7±2.2Wo9.0±1.0, Fe/Mn=30±2, n=20; maskelynite An61.4±1.4Ab38.0±1.4Or0.7±0.1, n=6.

Classification: Martian shergottite (olivine phyric basalt).

Specimens: 8.65 g on deposit at UNM, Brett Joseph Cohen holds the main mass.

Data from:
  MB110
  Table 0
  Line 0:
Place of purchase:Mauritania
Date:P 2021
Mass (g):43.2
Pieces:1
Class:Martian (shergottite)
Shock stage:high
Weathering grade:moderate
Fayalite (mol%):35.3±1.5
Ferrosilite (mol%):25.7±2.2
Wollastonite (mol%):9.0±1.0
Classifier:C. Agee, UNM
Type spec mass (g):8.65
Type spec location:UNM
Main mass:Brett Cohen
Comments:Submitted by C. Agee
Institutions
   and collections
UNM: Institute of Meteoritics MSC03 2050 University of New Mexico Albuquerque NM 87131-1126 USA, United States; Website (institutional address; updated 12 Feb 2015)
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 7859 approved meteorites from (Northwest Africa) (plus 1961 unapproved names)

Direct link to this page