Meteoritical Bulletin: Entry for Northwest Africa 14867

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Northwest Africa 14867

Basic information

Name: Northwest Africa 14867
This is an OFFICIAL meteorite name.
Abbreviation: NWA 14867
Observed fall: No
Year found: 2022
Country: (Northwest Africa)
Mass: 1530 g

Classification
history:

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

This is 1 of 273 approved meteorites classified as Mesosiderite. [show all]
Search for other: Mesosiderites, Metal-rich meteorites

Comments:

Approved 9 May 2022

Writeup

help

Writeup from MB 111:

Northwest Africa 14867 (NWA 14867)

(Northwest Africa)

Purchased: 2022 Jan

Classification: Mesosiderite

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

Physical characteristics: Many dark brownish fragments without fusion crust.

Petrography: The meteorite displays a dark brownish interior and is composed of silicate (about 60 vol%) and metallic (about 40 vol%) portions. The silica fraction is composed of up to 700 µm sized weakly zoned and partly exsolved low-Ca pyroxene, Ca-pyroxene as blebby and lamellar exsolutions, and calcic plagioclase. Low-Ca-pyroxene contains abundant sulfide-metal blebs. Minor phases include silica, FeS, and merrillite. The metallic lithology is severely altered to Fe-oxides and -hydroxides.

Geochemistry: zoned low-Ca pyroxene host crystals to augite exsolutions: Fs_36.8±2.3Wo_3.8±0.3(Fs_31.5-42.0Wo_3.1-4.2, FeO/MnO=19-23, n=16); augite exsolutions: Fs_18.2±0.6Wo_40.0±1.0(Fs_16.7-19.0Wo_38.4-41.9, FeO/MnO=16-22, n=17); calcic plagioclase: An_92.9±2.9(An_84.3-95.2, n=18)

Data from:
  MB111
  Table 0
  Line 0:

Place of purchase:	Guelmim, Morocco
Date:	P 2022 Jan
Mass (g):	1530
Pieces:	many
Class:	Mesosiderite
Shock stage:	S1
Weathering grade:	high
Ferrosilite (mol%):	36.8; 18.2
Wollastonite (mol%):	3.8; 40.0
Classifier:	A. Greshake, MNB
Type spec mass (g):	31.3
Type spec location:	MNB
Main mass:	Noreddine Azelmat
Comments:	Submitted by Ansgar Greshake

Institutions
and collections

MNB: Museum für Naturkunde, Invalidenstraße 43, D-10115 Berlin, Germany (institutional address; updated 24 Dec 2011)

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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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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