Meteoritical Bulletin: Entry for Northwest Africa 7207

header

MetSoc Home Publications Contacts

Search the Meteoritical Bulletin Database
Last update: 15 Apr 2024
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 7207

Basic information

Name: Northwest Africa 7207
This is an OFFICIAL meteorite name.
Abbreviation: NWA 7207
Observed fall: No
Year found: 2010
Country: (Northwest Africa)
Mass: 92 g

Classification
history:

Meteoritical Bulletin:	MB 100	(2012)	CV3
Recommended:			CV3 [explanation]

This is 1 of 470 approved meteorites (plus 2 unapproved names) classified as CV3. [show all]
Search for other: Carbonaceous chondrites, Carbonaceous chondrites (type 3), CV chondrites, and CV-CK clan chondrites

Comments:

Approved 10 Apr 2012

Writeup

help

Writeup from MB 100:

Northwest Africa 7207 (NWA 7207)

(Northwest Africa)

Purchased: 2010 Feb

Classification: Carbonaceous chondrite (CV3)

History: One stone was purchased by an anonymous buyer in Tucson, USA, in February 2010

Physical characteristics: A 92 g stone with dark gray interior, covered by shiny black fusion crust.

Petrography: (M.A. Ivanova, Vernad) The meteorite consists of fine-grained matrix, chondrules (to 2 mm) and their fragments and refractory inclusions to several mm. Minor phases include plagioclase, spinel, chromite, sulfides, magnetite, Fe,Ni metal grains. The meteorite shows minor weathering.

Geochemistry: Olivine Fa_0.34-65.5.Pyroxene is represented by low-Ca pyroxene Fs_0.9-7.0Wo_0.9-4.3and augite Fs_1.9-3.6Wo_35-41.Oxygen isotopic compositions: (I. A Franchi and R. C Greenwood, OU, by laser fluorination): δ¹⁸O = 2.473, δ¹⁷O = -1.897, Δ¹⁷O = -3.183 (all per mil).

Classification: Carbonaceous chondrite (CV3).

Specimens: 18.47 g and one polished section are on deposit at Vernad. The anonymous buyer holds the main mass.

Data from:
  MB100
  Table 1
  Line 1677:

Place of purchase:	Tucson, USA
Date:	P 2010 Feb
Mass (g):	92
Pieces:	1
Class:	CV3
Weathering grade:	minimal
Fayalite (mol%):	0.34-65.5
Ferrosilite (mol%):	0.9-7.0
Wollastonite (mol%):	0.9-4.3
Classifier:	M. A. Ivanova, Vernad
Type spec mass (g):	18.47
Type spec location:	Vernad
Main mass:	anonymous
Comments:	Submitted by C. A. Lorenz

Plots:

O isotopes:

Institutions
and collections

OU: Planetary and Space Sciences Department of Physical Sciences The Open University Walton Hall Milton Keynes MK7 6AA United Kingdom, United Kingdom (institutional address; updated 8 Dec 2011)
Vernad: Vernadsky Institute of Geochemistry and Analytical Chemistry, Russia (institutional address; updated 21 Feb 2016)

Catalogs:

References:

Published in Meteoritical Bulletin, no. 100, MAPS 49, E1-E101 (2014)

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

Geography:

Coordinates:

Unknown.

Statistics:
This is 1 of 9699 approved meteorites from (Northwest Africa) (plus 1854 unapproved names)

Also see:

This lists the most popular meteorites among people who looked up this meteorite.

Revision
history:

This lists important revisions made to data for this record.

Direct link to this page