Meteoritical Bulletin: Entry for Northeast Africa 032

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Northeast Africa 032

Basic information

Name: Northeast Africa 032
This is an OFFICIAL meteorite name.
Abbreviation: NEA 032
Observed fall: No
Year found: 2019
Country: Libya
Mass: 219 g

Classification
history:

Recommended:

LL4 [explanation]

This is 1 of 384 approved meteorites classified as LL4. [show all]
Search for other: LL chondrites, LL chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7)

Comments:

Approved 20 Dec 2021

Writeup

Writeup from MB 110:

Northeast Africa 032 (NEA 032)

Libya

Purchased: 2019 Apr

Classification: Ordinary chondrite (LL4)

History: Purchased by Mbark Arjdal in April 2019 from a Libyan dealer.

Petrography: (A. Irving, UWS and J. Boesenberg, BrownU) Well-formed chondrules containing devitrified glass and rare fresh glass are set in a matrix containing troilite, stained kamacite, augite, chromite and chlorapatite.

Geochemistry: Olivine (Fa_29.4±0.7, range Fa_28.7-30.6, N = 6), low-Ca pyroxene (Fs_24.0±0.4Wo_1.6±0.2, range Fs_23.5-24.7Wo_1.4-1.9, N = 5), augite (Fs_8.6±0.1Wo_45.6±0.5, range Fs_8.5-8.7Wo_45.9-45.2, N = 2).

Classification: Ordinary chondrite (LL4).

Specimens: 38.5 g including one polished thin section at UWB; remainder with Mr. M. Arjdal.

Data from:
  MB110
  Table 0
  Line 0:

Place of purchase:	Libya
Date:	P 2019 Apr
Mass (g):	219
Pieces:	1
Class:	LL4
Shock stage:	S2
Weathering grade:	W1
Fayalite (mol%):	29.4±0.7
Ferrosilite (mol%):	24.0±0.4
Wollastonite (mol%):	1.6±0.2
Classifier:	A. Irving, UWS, and J. Boesenberg, BrownU
Type spec mass (g):	38.5
Type spec location:	UWB
Main mass:	M. Arjdal
Comments:	Work name Arj H28; submitted by A. Irving

Institutions
and collections

UWS: University of Washington, Department of Earth and Space Sciences, 70 Johnson Hall, Seattle, WA 98195, United States (institutional address; updated 15 Jan 2012)
UWB: University of Washington, Box 353010 Seattle, WA 98195, United States (institutional address; updated 27 Jul 2012)
BrownU: Brown University Providence, RI 02912, United States (institutional address; updated 7 Sep 2019)

Catalogs:

References:

Published in Meteoritical Bulletin, no. 110, in preparation (2021)

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Geography:

Libya

Coordinates:

Unknown.

Statistics:
This is 1 of 1529 approved meteorites from Libya (plus 23 unapproved names) (plus 2 impact craters)

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