Meteoritical Bulletin: Entry for Northwest Africa 14520

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Northwest Africa 14520

Basic information

Name: Northwest Africa 14520
This is an OFFICIAL meteorite name.
Abbreviation: NWA 14520
Observed fall: No
Year found: 2021
Country: Algeria
Mass: 1843 g

Classification
history:

Recommended:

Martian (shergottite) [explanation]

This is 1 of 307 approved meteorites (plus 2 unapproved names) classified as Martian (shergottite). [show all]
Search for other: Martian meteorites

Comments:

Approved 15 Dec 2021

Writeup

Writeup from MB 110:

Northwest Africa 14520 (NWA 14520)

Algeria

Purchased: 2021

Classification: Martian meteorite (shergottite)

History: Purchased by Zhishu Wang in 2021 from a meteorite dealer

Physical characteristics: A single stone has partial fusion crust. Shock induced melt rock veins are observable in hand specimen.

Petrography: (J. Ji, S. Hu and Y. Lin, IGGCAS) The two major phases in this meteorite are pyroxene (48 area%) and maskelynite (40 area%). Minor phases are merrillite, apatite, ilmenite, troilite and olivine. Most pyroxene grains display zoning features.

Geochemistry: Mineral compositions and geochemistry: (J. Ji, S. Hu and Y. Lin, IGGCAS) Pigeonite: Fs_34.2-62.7Wo_12-18.9(n=7), augite: Fs_19.5-36.4Wo_27.2-38.1(n=9), Fe/Mn=34.5±5.2 (mole ratio,n=16), maskelynite: An_39.7-56.7Ab_42.1-55.0(n=6).

Classification: (J. Ji, S. Hu and Y. Lin, IGGCAS) Martian (shergottite)

Specimens: The main mass is held by Zhishu Wang

Data from:
  MB110
  Table 0
  Line 0:

Place of purchase:	Algeria
Date:	P 2021
Mass (g):	1843
Pieces:	1
Class:	Martian meteorite (shergottite)
Shock stage:	high
Weathering grade:	low
Ferrosilite (mol%):	34.2-62.7;19.5-36.4
Wollastonite (mol%):	12-18.9;27.2-38.1
Classifier:	J. Ji, S. Hu and Y. Lin, IGGCAS
Type spec mass (g):	29.5
Type spec location:	IGGCAS
Main mass:	Zhishu Wang
Comments:	Submitted by J. Ji, S. Hu and Y. Lin, IGGCAS

Institutions
and collections

IGGCAS: Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, China (institutional address; updated 16 Oct 2011)

Catalogs:

References:

Published in Gattacceca J., McCubbin F.M., Grossman J., Bouvier A., Chabot N.L., D'Orazio M., Goodrich C., Greshake A., Gross J., Komatsu M., Miao B., and Schrader D. (2022) The Meteoritical Bulletin, No. 110. Meteorit. Planet. Sci. 1-4

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Photos:

Credit	Photos
Public domain photographs:
Ji Jianglong

Geography:

Algeria

Coordinates:

Unknown.

Statistics:
This is 1 of 1315 approved meteorites from Algeria (plus 30 unapproved names) (plus 4 impact craters)

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