Meteoritical Bulletin: Entry for Northwest Africa 15105

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Northwest Africa 15105

Basic information

Name: Northwest Africa 15105
This is an OFFICIAL meteorite name.
Abbreviation: NWA 15105
Observed fall: No
Year found: 2022
Country: Algeria
Mass: 92 g

Classification
history:

Meteoritical Bulletin:	MB 111	(2023)	LL3
Recommended:			LL3 [explanation]

This is 1 of 487 approved meteorites classified as LL3. [show all]
Search for other: LL chondrites, LL chondrites (type 3), Ordinary chondrites, and Ordinary chondrites (type 3)

Comments:

Approved 23 Jul 2022

Writeup

Writeup from MB 111:

Northwest Africa 15105 (NWA 15105)

Algeria

Find: 2021

Classification: Ordinary chondrite (LL3)

History: Reportedly found in Algeria in 2021. Purchased in February 2022 by Frank Thompson from Matthew Stream who had acquired it from an Algerian meteorite dealer.

Physical characteristics: Saw-cut surface reveals numerous, distinct, closely packed chondrules, some up to 1500 μm in diameter, set in a light brown groundmass.

Petrography: (C. Agee, UNM) Reflected light microscopy of polished probe mount of shows numerous porphyritic chondrules, most with mesostasis or glass. Scattered metal is present.

Geochemistry: (A. Ross, UNM)) Olivine Fa_24.5±6.1, Cr₂O₃=0.05±0.05 (wt%), Fe/Mn=58±7, n=8; low-Ca pyroxene Fs_19.9±7.6Wo_1.1±0.8, Fe/Mn=36±14, n=4.

Classification: Ordinary chondrite (LL3), subtype approximately LL3.6.

Specimens: 22.26 g including a probe mount on deposit at UNM, Frank Thompson holds the main mass.

Data from:
  MB111
  Table 0
  Line 0:

Date:	2021
Mass (g):	92
Pieces:	1
Class:	LL3
Shock stage:	S2
Weathering grade:	W2
Fayalite (mol%):	24.5±6.1
Ferrosilite (mol%):	19.9±7.6
Wollastonite (mol%):	1.1±0.8
Classifier:	C. Agee, UNM
Type spec mass (g):	22.26
Type spec location:	UNM
Main mass:	Frank Thompson
Comments:	Fieldname FT-1; submitted by C. Agee

Institutions
and collections

UNM: Institute of Meteoritics MSC03 2050 University of New Mexico Albuquerque NM 87131-1126 USA, United States; Website (institutional address; updated 12 Feb 2015)
Thompson: Edwin Thompson, 5150 Dawn St., Lake Oswego, OR 97035, United States (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)
FRANK THOMPSON

Geography:

Algeria

Coordinates:

Unknown.

Statistics:
This is 1 of 1356 approved meteorites from Algeria (plus 30 unapproved names) (plus 4 impact craters)

Also see:

This lists the most popular meteorites among people who looked up this meteorite.

Revision
history:

This lists important revisions made to data for this record.

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