header
  MetSoc Home            Publications            Contacts  
Search the Meteoritical Bulletin Database
Last update: 12 Mar 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 14981
Basic information Name: Northwest Africa 14981
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 14981
Observed fall: No
Year found: 2021
Country: (Northwest Africa)
Mass:help 880 g
Classification
  history:
Meteoritical Bulletin:  MB 111  (2023)  Eucrite-pmict
Recommended:  Eucrite-pmict    [explanation]

This is 1 of 406 approved meteorites classified as Eucrite-pmict.   [show all]
Search for other: Achondrites, Eucrites, and HED achondrites
Comments: Approved 20 Jun 2022
Writeuphelp
Writeup from MB 111:

Northwest Africa 14981 (NWA 14981)

(Northwest Africa)

Purchased: 2021 Nov

Classification: HED achondrite (Eucrite, polymict)

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

Physical characteristics: Grayish rock almost completely covered with fusion crust.

Petrography: The meteorite displays a fresh grayish interior and is polymict breccia composed of up to 2 cm sized lithic and up to 1.5 mm sized mineral fragments set in fine-grained clastic matrix. Lithic clasts include basaltic and impact melt fragments. Mineral phases are predominantly exsolved pyroxene, diognetic low-Ca pyroxene (about 3 vol%), and calcic plagioclase grains. Minor phases include fayalite, silica, ilmenite, Ti-bearing chromite, zircon, troilite, and rare metallic iron. Some slices contain black carbonaceous chondrite clasts and a rare mesosiderate-like fragment.

Geochemistry: Eucrite: low-Ca pyroxene host to exsolution lamellae: Fs62.6±2.0Wo2.2±0.8 (Fs60.1-65.7Wo1.8-4.1, FeO/MnO=29-32, n=7); Ca-pyroxene exsolution lamellae: Fs27.9±0.3Wo43.0±0.3 (Fs27.5-28.4Wo42.5-43.4, FeO/MnO=29-34, n=7); diogenetic pyroxene: Fs27.0±0.3Wo2.9±0.1 (Fs26.7-27.3Wo2.8-3.0, FeO/MnO=29-30, n=7); more ferroan low-Ca-pyroxene: Fs37.0±0.3Wo2.6±0.5 (Fs36.6-37.3Wo1.9-3.1, FeO/MnO=29-32, n=7); olivine: Fa84.6±0.2, FeO/MnO=37±1, n=5); calcic plagioclase: An90.4±2.5 (An84.5-92.3, n=7).

Data from:
  MB111
  Table 0
  Line 0:
Place of purchase:Morocco
Date:P 2021 Nov
Mass (g):880
Pieces:1
Class:Eucrite-pmict
Shock stage:low
Weathering grade:low
Fayalite (mol%):84.6
Ferrosilite (mol%):62.6; 27.9; 27.0; 37.0
Wollastonite (mol%):2.2; 43.0; 2.9; 2.6
Classifier:A. Greshake, MNB
Type spec mass (g):36.8
Type spec location:MNB
Main mass:David Göttlich
Comments:Submitted by Ansgar Greshake
Institutions
   and collections
MNB: Museum für Naturkunde, Invalidenstraße 43, D-10115 Berlin, Germany (institutional address; updated 24 Dec 2011)
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 9589 approved meteorites from (Northwest Africa) (plus 1869 unapproved names)
Also see:
  This lists the most popular meteorites among people who looked up this meteorite.
Revision
  history:
  This lists important revisions made to data for this record.

Direct link to this page