Meteoritical Bulletin: Entry for Northwest Africa 4837

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Northwest Africa 4837

Basic information

Name: Northwest Africa 4837
This is an OFFICIAL meteorite name.
Abbreviation: NWA 4837
Observed fall: No
Year found: 2006
Country: (Northwest Africa)
Mass: 128 g

Classification
history:

Recommended:

CV3 [explanation]

This is 1 of 605 approved meteorites (plus 1 unapproved name) classified as CV3. [show all]
Search for other: Carbonaceous chondrites, Carbonaceous chondrites (type 3), CV chondrites, and CV-CK clan chondrites

Comments:

Approved 4 Jul 2020

Writeup

Writeup from MB 109:

Northwest Africa 4837 (NWA 4837)

(Northwest Africa)

Purchased: 2006

Classification: Carbonaceous chondrite (CV3)

History: Purchased by Marcin Cimała in 2006 from a dealer in Erfoud, Morocco.

Petrography: (A. Irving, UWS and J. Boesenberg, BrownU; T. Bunch and J. Wittke, NAU) Well-formed chondrules (apparent diameter 980±340 µm, N = 23) and CAI (both very fine grained and relatively coarse grained) are set in a fine grained matrix (~50 vol.%, deep red-brown in thin section).

Geochemistry: Olivine (Fa_15.3±17.3, range Fa_2.3-45.7, N = 9), low-Ca pyroxene (Fs_1.0±0.2Wo_1.0±0.1, range Fs_0.7-1.1Wo_0.8-1.1, N = 3), subcalcic augite (Fs_0.9Wo_28.4), diopside (Fs_1.1Wo_37.8).

Classification: Carbonaceous chondrite (CV3).

Specimens: 20.2 g including one polished thin section at PSF; remainder with Mr. M. Cimała.

Data from:
  MB109
  Table 0
  Line 0:

Place of purchase:	Erfoud
Date:	P 2006
Mass (g):	128
Pieces:	1
Class:	CV3
Shock stage:	S2
Weathering grade:	moderate
Fayalite (mol%):	15.3±17.3
Ferrosilite (mol%):	1.0±0.2
Wollastonite (mol%):	1.0±0.1
Classifier:	A. Irving, UWS, and J. Boesenberg, BrownU
Type spec mass (g):	20.2
Type spec location:	PSF
Main mass:	M. Cimala
Comments:	Work name MC029; submitted by A. Irving

Institutions
and collections

NAU: Geology, Bldg 12 Knoles Dr Northern Arizona University, Flagstaff, AZ 86011, United States; Website (institutional address; updated 12 Apr 2012)
PSF: Planetary Studies Foundation,10 Winterwood Lane, Unit B, Galena, Illinois 61036-9283, United States; Website (institutional address; updated 1 Dec 2011)
UWS: University of Washington, Department of Earth and Space Sciences, 70 Johnson Hall, Seattle, WA 98195, United States (institutional address; updated 15 Jan 2012)
BrownU: Brown University Providence, RI 02912, United States (institutional address; updated 7 Sep 2019)

Catalogs:

References:

Published in Meteoritical Bulletin, no. 109, in preparation (2020)

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

Photos:

Credit	Photos
Photos from the Encyclopedia of Meteorites:
Polandmet
Photos uploaded by members of the Encyclopedia of Meteorites. (Caution, these are of unknown reliability)
Robert Smart

Geography:

Coordinates:

Unknown.

Statistics:
This is 1 of 9013 approved meteorites from (Northwest Africa) (plus 1869 unapproved names)

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