Meteoritical Bulletin: Entry for Northwest Africa 7260

MetSoc Home Publications Contacts

Search the Meteoritical Bulletin Database
Last update: 3 Jun 2023
Search for:	Search type:	Search limits:	Display:	Publication:
Names Text Places Classes Years	Contains Starts with Exact Sounds like	NonAntarctic Falls Non-NWAs Has strewnfield		What's new in the last:
Include past classifications in search		Has photo	Limit to approved meteorite names
Search text:

Northwest Africa 7260

Basic information

Name: Northwest Africa 7260
This is an OFFICIAL meteorite name.
Abbreviation: NWA 7260
Observed fall: No
Year found: 2012
Country: (Northwest Africa)
Mass: 340 g

Classification
history:

Meteoritical Bulletin:	MB 101	(2012)	R4
Recommended:			R4 [explanation]

This is 1 of 67 approved meteorites classified as R4. [show all]
Search for other: Rumuruti chondrites, Rumuruti chondrites (type 4-7)

Comments:

Approved 22 Aug 2012

Writeup

Writeup from MB 101:

Northwest Africa 7260 (NWA 7260)

(Northwest Africa)

Purchased: 2012 Feb

Classification: Rumuruti chondrite (R4)

History: Purchased in 2012 February by Jack Schrader from a Moroccan dealer at the Tucson Gem and Mineral Show.

Petrography: Fragmental breccia composed of angular clasts containing well-formed chondrules in an orange-stained matrix. Minerals are olivine, orthopyroxene, pigeonite, augite, chromite, iron sulfide, pentlandite and rare chalcopyrite. No metal was found.

Geochemistry: Olivine (Fa_34.7-39.5; sparse magnesian cores Fa_3.0), orthopyroxene (Fs_6.6Wo_1.0), pigeonite (Fs_28.1Wo_5.7), augite (Fs_10.3-10.9Wo_45.8-45.4; Cr₂O₃ = 0.72 wt.%).

Classification: R4 chondrite.

Data from:
  MB101
  Table 0
  Line 0:

Place of purchase:	Tucson
Date:	P 2012 Feb
Mass (g):	340
Pieces:	1
Class:	R4
Shock stage:	S2
Weathering grade:	moderate
Fayalite (mol%):	34.7-39.5
Ferrosilite (mol%):	6.6; 28.1; 10.3-10.9
Wollastonite (mol%):	1.0; 5.7; 45.8-45.4
Classifier:	A. Irving and S. Kuehner, UWS
Type spec mass (g):	22.6
Type spec location:	UWB
Main mass:	J. Schrader
Comments:	JS12-1; submitted by A. Irving

Institutions
and collections

UWS: University of Washington, Department of Earth and Space Sciences, 70 Johnson Hall, Seattle, WA 98195, United States (institutional address; updated 15 Jan 2012)
UWB: University of Washington, Box 353010 Seattle, WA 98195, United States (institutional address; updated 27 Jul 2012)

Catalogs:

References:

Published in Meteoritical Bulletin, no. 101, MAPS 50, 1661, September 2015

Find references in NASA ADS:
Find references in Google Scholar:

Geography:

Coordinates:

Unknown.

Statistics:
This is 1 of 9116 approved meteorites from (Northwest Africa) (plus 1873 unapproved names)

Direct link to this page