Meteoritical Bulletin: Entry for Northwest Africa 5245

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Northwest Africa 5245

Basic information

Name: Northwest Africa 5245
This is an OFFICIAL meteorite name.
Abbreviation: NWA 5245
Observed fall: No
Year found: 2007
Country: (Northwest Africa)
Mass: 418 g

Classification
history:

Meteoritical Bulletin:	MB 111	(2023)	R3
Recommended:			R3 [explanation]

This is 1 of 77 approved meteorites classified as R3. [show all]
Search for other: Rumuruti chondrites, Rumuruti chondrites (type 3)

Comments:

Approved 19 Mar 2022

Writeup

help

Writeup from MB 111:

Northwest Africa 5245 (NWA 5245)

(Northwest Africa)

Purchased: 2007

Classification: Rumuruti chondrite (R3)

History: The meteorite was purchased from a local meteorite dealer in Erfoud, Morocco.

Physical characteristics: Three brownish fragments without fusion crust.

Petrography: The meteorite is composed of well defined, partly flattened separated chondrules (mean diameter about 400 µm) embedded into abundant matrix dominated by ferroan olivine. Compositionally unequilibrated olivine and pyroxene occur in chondrules and as single mineral grains in the matrix. Minor phases include Ca-pyroxene, sodic plagioclase, Ti-bearing chromite, pyrrhotite, and pentlandite. No metal has been detected. The meteorite appears unbrecciated.

Geochemistry: olivine: Fa_23.1±14.0(Fa_0.6-37.0, n=25); low-Ca pyroxene: Fs_18.1±6.3Wo_1.4±1.2(Fs_8.7-26.7Wo_0.3-4.3, n=19); Ca-pyroxene: Fs_8.2±1.5Wo_32.9±6.1(Fs_6.2-10.2Wo_23.1-44.8, n=11); feldspar: An_4.1-7.7Ab_87.4-90.3Or_4.0-6.4, n=8

Data from:
  MB111
  Table 0
  Line 0:

Place of purchase:	Erfoud, Morocco
Date:	P 2007
Mass (g):	418
Pieces:	3
Class:	R3
Shock stage:	S2
Weathering grade:	W2
Fayalite (mol%):	23.1
Ferrosilite (mol%):	18.1; 8.2
Wollastonite (mol%):	1.4; 32.9
Classifier:	A. Greshake, MNB
Type spec mass (g):	20.5
Type spec location:	MNB
Main mass:	Stefan Ralew
Comments:	Submitted by Ansgar Greshake

Institutions
and collections

MNB: Museum für Naturkunde, Invalidenstraße 43, D-10115 Berlin, Germany (institutional address; updated 24 Dec 2011)
Ralew: Stefan Ralew, Kunibertstraße 29, 12524 Berlin, Germany; Website (private address)

Catalogs:

References:

Published in Gattacceca J., McCubbin F. M., Grossman J. N., Schrader D. L., Chabot N. L., D’Orazio M., Goodrich C., Greshake A., Gross J., Joy K. H., Komatsu M. and Miao B. (2023) The Meteoritical Bulletin, No. 111. Meteoritics & Planetary Science 58, 901–904. ?

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Photos:

Credit	Photos
Photos uploaded by members of the Encyclopedia of Meteorites. (Caution, these are of unknown reliability)
André Knöfel

Geography:

Coordinates:

Unknown.

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

Also see:

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Revision
history:

This lists important revisions made to data for this record.

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