Meteoritical Bulletin: Entry for Northwest Africa 2952

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Northwest Africa 2952

Basic information

Name: Northwest Africa 2952
This is an OFFICIAL meteorite name.
Abbreviation: NWA 2952
Observed fall: No
Year found: 2005
Country: (Northwest Africa)
Mass: 102 g

Classification
history:

Recommended:

CK3 [explanation]

This is 1 of 86 approved meteorites classified as CK3. [show all]
Search for other: Carbonaceous chondrites, Carbonaceous chondrites (type 3), CK chondrites, CK3 chondrites, and CV-CK clan chondrites

Comments:

Approved 4 Apr 2024

Writeup

help

Writeup from MB 113:

Northwest Africa 2952 (NWA 2952)

(Northwest Africa)

Purchased: 2005

Classification: Carbonaceous chondrite (CK3)

History: Purchased by Greg Hupe in 2005 from a Moroccan dealer.

Petrography: (A. Irving, UWS, and J. Boesenberg, BrownU) Separated, well-defined unequilibrated chondrules (apparent diameter 980±400 µm, N = 14) containing devitrified glass, plus some fine grained CAI, are set in a fine grained matrix (~30 vol.%) containing Cr-magnetite (stained by secondary Fe oxides, orange in thin section), plagioclase (with a wide range in composition) and rare pentlandite. Phases in CAI include anorthite, olivine, diopside and spinel.

Geochemistry: Olivine (Fa_30.0±5.8, range Fa_14.7-33.1, N = 13), pigeonite (Fs_4.1±0.3Wo_13.1±5.3, range Fs_3.7-4.4Wo_5.5-18.0, N = 4), augite (Fs_4.6±4.1Wo_48.8±0.7, range Fs_0.7-10-1.8Wo_47.6-49.7, N = 6), plagioclase (An_26.4-44.4Or_3.9-2.1; An_84.2Or_0.5; N = 5), anorthite (An_97.2-99.3Or_0.1-0.0, N = 4), magnetite (Cr₂O₃ 3.3-3.7 wt.%, N = 10).

Classification: Carbonaceous chondrite (CK3).

Specimens: 20.4 g including one polished thin section at BrownU; remainder with Mr. G. Hupe.

Data from:
  MB113
  Table 0
  Line 0:

Place of purchase:	Morocco
Date:	P 2005
Mass (g):	102
Pieces:	1
Class:	CK3
Shock stage:	S2
Weathering grade:	low
Fayalite (mol%):	30.0±5.8
Ferrosilite (mol%):	4.1±0.3; 4.6±4.1
Wollastonite (mol%):	13.1±5.3; 48.8±0.7
Classifier:	A. Irving, UWS, and J. Boesenberg, BrownU
Type spec mass (g):	20.4
Type spec location:	BrownU
Main mass:	G. Hupe
Comments:	Work names TB789 and GH-176, thin section RNP1; 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)
Hupe: (old address—now see GHupé or AHupé) G. and A. Hupe, 2616 Lake Youngs Court SE, Renton, WA 98058., United States (private address)
BrownU: Joseph Boesenberg Brown University Dept of Earth, Environmental and Planetary Sciences (DEEPS) 324 Brook Street Providence, RI 02912 , United States (institutional address; updated 4 Jan 2024)

Catalogs:

References:

Published in Meteoritical Bulletin, no. 113, in preparation (2024)

Find references in NASA ADS:
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Photos:

Credit	Photos
Photos from the Encyclopedia of Meteorites:
The Hupe Collection

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.

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