header
  MetSoc Home            Publications            Contacts  
Search the Meteoritical Bulletin Database
Last update: 15 Apr 2024
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 14904
Basic information Name: Northwest Africa 14904
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 14904
Observed fall: No
Year found: 2019
Country: (Northwest Africa)
Mass:help 800 g
Classification
  history:
Meteoritical Bulletin:  MB 111  (2023)  Martian (shergottite)
Recommended:  Martian (shergottite)    [explanation]

This is 1 of 321 approved meteorites (plus 2 unapproved names) classified as Martian (shergottite).   [show all]
Search for other: Martian meteorites
Comments: Approved 9 May 2022
Writeuphelp
Writeup from MB 111:

Northwest Africa 14904 (NWA 14904)

(Northwest Africa)

Find: 2019

Classification: Martian meteorite (Shergottite)

History: Purchased by Adam Aaronson in Temara, Morocco, in 2019

Petrography: Poikilitic Shergotitte with characteristic bimodal texture. Poikilitic areas contain large pyroxene oikocrysts enclosing chadacrysts of olivine. Non-poikilitic areas consist of large anhedral olivine grains, pyroxene, and maskelynite. Accessory phases include merrillite, associated with maskelynite, chromite, ilmenite, and sulfides. Significant evidence of shock is seen: pockets of dark brown shock melt with vesicles and shock veins are prevalent. Olivine microlites are common, as is shock darkening of olivine, and abnormal birefringence colors; areas of shock recrystallized olivine are also present.

Geochemistry: Olivine Fo65.15-69.12Fa30.88-34.85, FeO/MnO=46.49-66.14, (N=62), low-Ca pyroxene Fs19.59-25.24En60.57-77.48Wo2.93-17.85 FeO/MnO=17.68-31.07 (N=34), high Ca-pyroxene Fs13.10-17.05En48.23-54.23Wo30.01-38.20, FeO/MnO=17.68-31.07 (N=51), maskelynite An48.33-54.72Ab43.97-48.99Or0.07-2.92 (N=54)

Classification: Martian (Poikilitic Shergottite)

Specimens: 174.97 g end cut plus 6 one-inch round thin section on deposit at TCU, P. Mani holds the main mass.

Data from:
  MB111
  Table 0
  Line 0:
Place of purchase:Northwest Africa
Date:2019
Mass (g):800
Pieces:1
Class:Martian (shergottite)
Shock stage:high
Fayalite (mol%):32.94±0.71 (n=62)
Ferrosilite (mol%):14.87±0.88 (n=34)
Wollastonite (mol%):8.60±4.04 (n=34)
Classifier:R.G. Mayne and E.J. Gackstatter, TCU
Type spec mass (g):174.97
Type spec location:TCU
Main mass:P. Mani
Comments:Submitted by R.G. Mayne
Institutions
   and collections		 TCU: Oscar E. Monnig Collection, Department of Geology, Texas Christian University, Ft. Worth, TX 76129, United States; Website (institutional address; updated 24 Feb 2012)
Aaronson: Sahara Overland Ltd., Harhora, Temara, 12000, Morocco (private address; updated 3 Jan 2010)
Catalogs:
References: Published in Gattacceca J., McCubbin F. M., Grossman J. N., Schrader D. L., Chabot N. L., D’Orazio M., Goodrich C., Greshake A., Gross J., Joy K. H., Komatsu M. and Miao B. (2023) The Meteoritical Bulletin, No. 111. Meteoritics & Planetary Science 58, 901–904. ?
Find references in NASA ADS:
Find references in Google Scholar:
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 9699 approved meteorites from (Northwest Africa) (plus 1854 unapproved names)
Also see:
  This lists the most popular meteorites among people who looked up this meteorite.
Synonymshelp: Northwest Africa 14983 (Duplicate entry)
NWA 14983 (Duplicate entry)
Revision
  history:
  This lists important revisions made to data for this record.

Direct link to this page