Meteoritical Bulletin: Entry for Northwest Africa 5378

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Northwest Africa 5378

Basic information

Name: Northwest Africa 5378
This is an OFFICIAL meteorite name.
Abbreviation: NWA 5378
Observed fall: No
Year found: 2008
Country: (Northwest Africa)
Mass: 87 g

Classification
history:

Recommended:

CK5 [explanation]

This is 1 of 197 approved meteorites classified as CK5. [show all]
Search for other: Carbonaceous chondrites, Carbonaceous chondrites (equilibrated), CK chondrites, CK chondrites (type 4-6), and CV-CK clan chondrites

Comments:

Approved 19 Mar 2022

Writeup

help

Writeup from MB 111:

Northwest Africa 5378 (NWA 5378)

(Northwest Africa)

Purchased: 2008

Classification: Carbonaceous chondrite (CK5)

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

Physical characteristics: Dark grayish rock mostly covered with fusion crust.

Petrography: The meteorite displays a dark grayish interior and consists of large, partly flattened and well separated chondrules (apparent mean diameter about 700 µm, up to 2 mm) set in abundant recrystallized matrix predominantly composed of ferroan Ni-bearing olivine. Minor phases are low-Ca pyroxene, Ca-pyroxene, nests of intermediate plagioclase, and FeS. Cr-rich magnetite is abundant; no metal detected. Some chondrules show brownish staining due to terrestrial alteration.

Geochemistry: olivine: Fa_28.7±0.2(Fa_28.4-28.9, FeO/MnO=116±12; NiO=0.37±0.07 wt%, n=7); low-Ca pyroxene: Fs_25.9±0.8Wo_0.6±0.2(Fs_24.9-27.1Wo_0.5-1.0, n=7); Ca-pyroxene: Fs_10.0±1.3Wo_43.7±3.3(Fs_8.9-12.4Wo_37.3-46.1, n=5); feldspar: An_25.2-62.6Ab_36.7-71.3Or_0.7-3.6, n=6; magnetite contains 4.0±0.1 wt% Cr₂O₃, n=4

Data from:
  MB111
  Table 0
  Line 0:

Place of purchase:	Erfoud, Morocco
Date:	P 2008
Mass (g):	87
Pieces:	1
Class:	CK5
Shock stage:	S2
Weathering grade:	moderate
Fayalite (mol%):	28.7
Ferrosilite (mol%):	25.9; 10.0
Wollastonite (mol%):	0.6; 43.7
Classifier:	A. Greshake, MNB
Type spec mass (g):	17.4
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 Meteoritical Bulletin, no. 111, in preparation (2022)

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

Photos:

Credit	Photos
Photos uploaded by members of the Encyclopedia of Meteorites. (Caution, these are of unknown reliability)
André Knöfel	Photo added 20 Oct 2022
Mirko Graul	Photo added 20 Oct 2022

Geography:

Coordinates:

Unknown.

Statistics:
This is 1 of 8777 approved meteorites from (Northwest Africa) (plus 1879 unapproved names)

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