header
  MetSoc Home            Publications            Contacts  
Search the Meteoritical Bulletin Database
Last update: 6 Aug 2022
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:
Include past classifications in search
Limit to approved meteorite names
Search text:  
Northwest Africa 14440
Basic information Name: Northwest Africa 14440
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 14440
Observed fall: No
Year found: 2021
Country: Morocco
Mass:help 1790 g
Classification
  history:
Recommended:  Pallasite, PMG    [explanation]

This is 1 of 50 approved meteorites (plus 1 unapproved name) classified as Pallasite, PMG.   [show all]
Search for other: Main group pallasites, Metal-rich meteorites, and Pallasites
Comments: Approved 5 Dec 2021
Writeuphelp
Writeup from MB 110:

Northwest Africa 14440 (NWA 14440)

Morocco

Purchased: 2021

Classification: Pallasite-PMG

History: Purchased by Jay Piatek from Habib Naji in 2021.

Physical characteristics: Exterior is irregular, dark brown, and weathered lacking fusion crust. Saw cut surface shows angular cm-sized dark-orange, translucent olivine grains set in metal. There are also smaller scattered olivines set in the host metal. The modal abundances are approximately 60% metal, 40% olivine.

Petrography: (A. Ross, C. Agee, UNM) Reflected light microscopy and electron microprobe analysis reveal the presence olivine, kamacite, rare taenite, troilite, chromite and schreibersite.

Geochemistry: (A. Ross, C. Agee, UNM) Olivine Fa12.0±0.2, Fe/Mn=39±3, Fe/Mg=0.14±0.00, n=6; kamacite Ni=6.8±0.1, Co=0.65±0.03 (wt%), n=5.

Classification: Pallasite (main group)

Specimens: 35 g including a probe mount on deposit at UNM, Jay Piatek holds the main mass.

Data from:
  MB110
  Table 0
  Line 0:
Place of purchase:Morocco
Date:P 2021
Mass (g):1790
Pieces:1
Class:Pallasite-PMG
Shock stage:Low
Weathering grade:moderate
Fayalite (mol%):12.0±0.2
Classifier:C. Agee, UNM
Type spec mass (g):35
Type spec location:UNM
Main mass:Jay Piatek
Comments:Fieldname JP-4023; 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:

Morocco
Coordinates:Unknown.

Statistics:
     This is 1 of 1871 approved meteorites from Morocco (plus 24 unapproved names) (plus 1 impact crater)

Direct link to this page