header
  MetSoc Home            Publications            Contacts  
Search the Meteoritical Bulletin Database
Last update: 28 Mar 2020
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 7972
Basic information Name: Northwest Africa 7972
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 7972
Observed fall: No
Year found: 2013
Country: Morocco
Mass:help 1113 g
Classification
  history:
Meteoritical Bulletin:  MB 102  (2013)  L5
Recommended:  L5    [explanation]

This is 1 of 6696 approved meteorites (plus 4 unapproved names) classified as L5.   [show all]
Search for other: L chondrites, L chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7)
Comments: Approved 12 Aug 2013
Writeuphelp
Writeup from MB 102:

Northwest Africa 7972 (NWA 7972)

Morocco

Purchased: 2013

Classification: Ordinary chondrite (L5)

History: Purchased by Brahim Tahiri from a Moroccan hunter and sent to his partner Sean Tutorow for classification, 2013.

Physical characteristics: Single stone, dark weathered exterior with oxidation, saw cut reveals scattered chondrules and finely disseminated metal/sulfide set in a dark gray, partially oxidized groundmass, also a larger (~4 mm) metal grain observed.

Petrography: (C. Agee, UNM) Microprobe examination of a polished mount shows equilibrated chondrules, but some with coarse-grained mesostasis, oxide veinlets, and plagioclase up 50 μm.

Geochemistry: (C. Agee and N. Muttik, UNM) Olivine Fa25.5±1.2, Fe/Mn=52±2, n=7, Low Ca-pyroxene Fs21.2±0.4Wo1.3±0.2, Fe/Mn=29±2, n=5.

Classification: Ordinary chondrite (L5), weathering grade (W2).

Specimens: 20.0 g including a probe mount on deposit at UNM, Sean Tutorow holds the main mass.

Data from:
  MB102
  Table 0
  Line 0:
Place of purchase:Morocco
Date:P 2013
Mass (g):1112.7
Pieces:1
Class:L5
Weathering grade:W2
Fayalite (mol%):25.5±1.2
Ferrosilite (mol%):21.2±0.4
Wollastonite (mol%):1.3±0.2
Classifier:C. Agee, UNM
Type spec mass (g):20
Type spec location:UNM
Main mass:Sean Tutorow
Comments:Field name G-414; submitted by C. Agee (UNM)
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. 102, MAPS 50, 1662, September 2015
Find references in NASA ADS:
Find references in Google Scholar:
Geography:

Morocco
Coordinates:Unknown.

Statistics:
     This is 1 of 1460 approved meteorites from Morocco (plus 21 unapproved names) (plus 1 impact crater)

Direct link to this page