header
  MetSoc Home            Publications            Contacts  
Search the Meteoritical Bulletin Database
Last update: 27 Nov 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:
Limit to approved meteorite names
Search text:  
Northwest Africa 14113
Basic information Name: Northwest Africa 14113
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 14113
Observed fall: No
Year found: 2021
Country: Algeria
Mass:help 350 g
Classification
  history:
Recommended:  CM2    [explanation]

This is 1 of 614 approved meteorites classified as CM2.   [show all]
Search for other: Carbonaceous chondrites, Carbonaceous chondrites (type 2), CM chondrites, and CM-CO clan chondrites
Comments: Approved 11 Nov 2021
Writeuphelp
Writeup from MB 110:

Northwest Africa 14113 (NWA 14113)

Algeria

Purchased: 2021

Classification: Carbonaceous chondrite (CM2)

History: Purchased from an Algerian meteorite dealer in March 2021. Reportedly found in Algeria in 2021.

Physical characteristics: Dark fusion-crusted exterior, broken surface reveals numerous small chondrules set in a dark gray matrix that makes up approximately 60% of this meteorite. Small CAIs are visible.

Petrography: (A. Ross and C. Agee, UNM) Microprobe and reflected light microscopy examination reveal a fine-grained matrix that gives low microprobe totals from the presence of hydrous phases. Apparent chondrule diameter 313±149 μm (n=14). Chromite, Ni-bearing troilite, pentlandite, calcite, diopside, and oxidized iron were detected.

Geochemistry: (A. Ross and C. Agee, UNM) Olivine Fa26.0±19.0, n=17; ferroan chondrule olivine Fa36.3±11.3, Fe/Mn=101±14, Cr2O3=0.36±0.15, n=12; low-Ca pyroxene Fs8.2±14.9Wo4.2±4.2, n=5; matrix (20 μm defocused microprobe beam) analytical totals of 76.9±1.3 wt% and FeO=31.5±5.6 wt%, n=3.

Classification: Carbonaceous chondrite (CM2). The low analytical totals in the matrix indicate the presence of hydrous phases.

Specimens: 20.1 g on deposit at UNM, Simon de Boer and Matthew Stream hold the main mass.

Data from:
  MB110
  Table 0
  Line 0:
Place of purchase:Algeria
Date:P 2021
Mass (g):350
Pieces:1
Class:CM2
Shock stage:low
Weathering grade:low
Fayalite (mol%):26.0±19.0
Ferrosilite (mol%):8.2±14.9
Wollastonite (mol%):4.2±4.2
Classifier:C. Agee, UNM
Type spec mass (g):20.1
Type spec location:UNM
Main mass:Simon de Boer and Matthew Stream
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 Gattacceca J., McCubbin F.M., Grossman J., Bouvier A., Chabot N.L., D'Orazio M., Goodrich C., Greshake A., Gross J., Komatsu M., Miao B., and Schrader D. (2022) The Meteoritical Bulletin, No. 110. Meteorit. Planet. Sci. 1-4
Find references in NASA ADS:
Find references in Google Scholar:
Photos:
CreditPhotos
Photos uploaded by members of the Encyclopedia of Meteorites.
    (Caution, these are of unknown reliability)
Robert Smart   
Ryan Upchurch   
Geography:

Algeria
Coordinates:Unknown.

Statistics:
     This is 1 of 1232 approved meteorites from Algeria (plus 29 unapproved names) (plus 4 impact craters)

Direct link to this page