Meteoritical Bulletin: Entry for Northwest Africa 5049

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Northwest Africa 5049

Basic information

Name: Northwest Africa 5049
This is an OFFICIAL meteorite name.
Abbreviation: NWA 5049
Observed fall: No
Year found: 2006
Country: (Northwest Africa)
Mass: 335 g

Classification
history:

Meteoritical Bulletin:	MB 104	(2015)	CO3
Recommended:			CO3 [explanation]

This is 1 of 642 approved meteorites (plus 1 unapproved name) classified as CO3. [show all]
Search for other: Carbonaceous chondrites, Carbonaceous chondrites (type 3), CM-CO clan chondrites, and CO chondrites

Comments:

Approved 24 Nov 2015

Writeup

help

Writeup from MB 104:

Northwest Africa 5049 (NWA 5049)

(Northwest Africa)

Purchased: 2006 May

Classification: Carbonaceous chondrite (CO3)

History: Purchased by Thomas Webb in May 2006 from a dealer in Agadir, Morocco.

Petrography: (A. Irving and S. Kuehner, UWS) Small, separated, rounded chondrules and rare CAI in a dark brown, very fine grained matrix (~25 vol.%) containing ferroan silicates, altered kamacite, troilite and pentlandite. Chondrules have granular textures and some have finer grained rims.

Geochemistry: Olivine (Fa_0.9-71.4; Cr₂O₃ in ferroan examples = 0.02-0.08 wt.%, mean = 0.06±0.02 wt.%, N = 8), orthopyroxene (Fs_1.5-1.6Wo_0.9-0.8), clinopyroxene (Fs_1.6-2.7Wo_49.1-47.6). Oxygen isotopes (K. Ziegler, UNM): analyses of acid-washed subsamples by laser fluorination gave, respectively δ¹⁷O = -4.964, -5.342; δ¹⁸O = -1.313, -1.946; Δ¹⁷O = -4.271, -4.315 per mil (for a TFL slope of 0.528).

Classification: Carbonaceous chondrite (CO3).

Specimens: 18.4 g at App, 1.8 g at UWS, 1.2 g at AMSA. The remaining material is held by TWebb.

Data from:
  MB104
  Table 0
  Line 0:

Place of purchase:	Agadir
Date:	P 2006 May
Mass (g):	335
Pieces:	10
Class:	CO3
Shock stage:	S2
Weathering grade:	W2
Fayalite (mol%):	0.9-71.4
Classifier:	A. Irving and S. Kuehner, UWS
Type spec mass (g):	21.4
Type spec location:	App, UWB, AMSA
Main mass:	TWebb
Comments:	Submitted by A. Irving

Plots:

O isotopes:

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)
UWS: University of Washington, Department of Earth and Space Sciences, 70 Johnson Hall, Seattle, WA 98195, United States (institutional address; updated 15 Jan 2012)
AMSA: Australian Museum, 6 College Street, Sydney, NSW 2010, Australia (institutional address; updated 18 Oct 2011)
App: Department of Geology, 572 Rivers St., Appalachian State University, Boone, NC 28608, United States (institutional address; updated 7 Mar 2013)
UWB: University of Washington, Box 353010 Seattle, WA 98195, United States (institutional address; updated 27 Jul 2012)
TWebb: No contact information provided., United States (private address)

Catalogs:

References:

Published in Meteoritical Bulletin, no. 104, MAPS 52, 2284, Octover 2017, http://onlinelibrary.wiley.com/doi/10.1111/maps.12930/full

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

Geography:

Coordinates:

Unknown.

Statistics:
This is 1 of 9368 approved meteorites from (Northwest Africa) (plus 1875 unapproved names)

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