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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:help 92 g
Classification
  history:
Recommended:  LL3    [explanation]

This is 1 of 462 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
Writeuphelp
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 Fa24.5±6.1, Cr2O3=0.05±0.05 (wt%), Fe/Mn=58±7, n=8; low-Ca pyroxene Fs19.9±7.6Wo1.1±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 Meteoritical Bulletin, no. 111, in preparation (2022)
Find references in NASA ADS:
Find references in Google Scholar:
Photos:
CreditPhotos
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 1294 approved meteorites from Algeria (plus 30 unapproved names) (plus 4 impact craters)

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