header
  MetSoc Home            Publications            Contacts  
Search the Meteoritical Bulletin Database
Last update: 18 Nov 2023
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 7450
Basic information Name: Northwest Africa 7450
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 7450
Observed fall: No
Year found: 2012
Country: Morocco
Mass:help 151.2 g
Classification
  history:
Meteoritical Bulletin:  MB 101  (2012)  LL6
Recommended:  LL6    [explanation]

This is 1 of 2902 approved meteorites (plus 2 unapproved names) classified as LL6.   [show all]
Search for other: LL chondrites, LL chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7)
Comments: Approved 28 Sep 2012
Writeuphelp
Writeup from MB 101:

Northwest Africa 7450 (NWA 7450)

Morocco

Purchased: May 2012

Classification: Ordinary chondrite (LL6)

History: Purchased by Sean Tutorow from Morocco in May 2012.

Physical characteristics: Single stone, rough, dark exterior, saw cut reveals a brecciated texture of light clasts bounded by dark colored matrix, with scattered, mostly fine-grained metal/sulfide.

Petrography: (C. Agee, UNM) Microprobe examination of a polished mount shows a moderately brecciated texture with scattered indistinct chondrules up to 2 mm, ubiquitous plagioclase, mesostasis, troilite, and kamacite.

Geochemistry: (C. Agee and M.Spilde, UNM) Olivine Fa31.4±0.7, Fe/Mn=61±5, n=8; low-Ca pyroxene Fs25.2±0.6Wo1.7±0.4, Fe/Mn=38±2, n=4.

Classification: Ordinary chondrite (LL6), weathering grade W1.

Specimens: 21 g including a probe mount on deposit at UNM, Sean Tutorow holds the main mass.

Data from:
  MB101
  Table 0
  Line 0:
Place of purchase:Morocco
Date:P May 2012
Mass (g):151.17
Pieces:1
Class:LL6
Weathering grade:W1
Fayalite (mol%):31.4±0.7
Ferrosilite (mol%):25.2±0.6
Wollastonite (mol%):1.7±0.4
Classifier:C. Agee, UNM
Type spec mass (g):21
Type spec location:UNM
Main mass:Sean Tutorow
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 Meteoritical Bulletin, no. 101, MAPS 50, 1661, September 2015
Find references in NASA ADS:
Find references in Google Scholar:
Geography:

Morocco
Coordinates:Unknown.

Statistics:
     This is 1 of 2012 approved meteorites from Morocco (plus 35 unapproved names) (plus 1 impact crater)

Direct link to this page