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Al Alamayn 002
Basic information Name: Al Alamayn 002
     This is an OFFICIAL meteorite name.
Abbreviation: There is no official abbreviation for this meteorite.
Observed fall: No
Year found: 2022
Country: Egypt
Mass:help 1320 g
Classification
  history:
Recommended:  L5    [explanation]

This is 1 of 8581 approved meteorites (plus 4 unapproved names) classified as L5.   [show all]
Search for other: L chondrites, L chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7)
Comments: Approved 19 Nov 2022
Writeuphelp
Writeup from MB 111:

Al Alamayn 002        30°39’47.39’’N, 28°32’15.28’’E

Marsa Matruh, Egypt

Find: 2022

Classification: Ordinary chondrite (L5)

History: The meteorite was found by Mr. Amr Khaled in 2022 during a field trip to the northwestern Egyptian desert.

Physical characteristics: Dark brownish rock without fusion crust.

Petrography: The meteorite is composed of sparse, poorly defined chondrules set in a recrystallized matrix containing sodic plagioclase, chromite, chlorapatite, troilite, and FeNi metal. The plagioclase grain size is about 25 μm. Shock melt veins are present.

Data from:
  MB111
  Table 0
  Line 0:
State/Prov/County:Marsa Matruh
Date:2022
Latitude:30°39'47.39''N
Longitude:28°32'15.28''E
Mass (g):1320
Pieces:1
Class:L5
Shock stage:S2
Weathering grade:W2
Fayalite (mol%):22.5±0.6 (n=5)
Ferrosilite (mol%):18.9±0.2 (n=5)
Wollastonite (mol%):2.1±0.1 (n=5)
Classifier:A. Greshake, MNB
Type spec mass (g):40.3
Type spec location:MNB
Main mass:Amr Khaled
Finder:Amr Khaled
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 Meteoritical Bulletin, no. 111, in preparation (2022)
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Geography:

Egypt
Coordinates:
     Recommended::   (30° 39' 47"N, 28° 32' 15"E)

Statistics:
     This is 1 of 13 approved meteorites from Marsa Matruh, Egypt
     This is 1 of 127 approved meteorites from Egypt (plus 12 unapproved names) (plus 1 impact crater)
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