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Lahmada 020
Basic information Name: Lahmada 020
     This is an OFFICIAL meteorite name.
Abbreviation: There is no official abbreviation for this meteorite.
Observed fall: No
Year found: 2018
Country: Western Sahara
Mass:help 12.17 kg
Classification
  history:
Meteoritical Bulletin:  MB 108  (2020)  Lunar (feldsp. breccia)
Recommended:  Lunar (feldsp. breccia)    [explanation]

This is 1 of 343 approved meteorites classified as Lunar (feldsp. breccia).   [show all]
Search for other: Lunar meteorites
Comments: Approved 9 Feb 2019
Writeuphelp
Writeup from MB 108:

Lahmada 020        27.411°N, 9.845°W

Saguia el Hamra, Western Sahara

Find: 2018 Nov

Classification: Lunar meteorite (feldspathic breccia)

History: Found at a location north of Jdiriya, Morocco, near Oued Skikima, in November 2018. Material was obtained by Ahmad Bouragaa and Aziz Habibi, and some was purchased by Mark Lyon and Mendy Ouzillou in November 2018.

Physical characteristics: Multiple pieces (total 12.168 kg) of the same distinctive very fine grained, dark gray microvesicular material with sparse, irregularly distributed small milky clasts.

Petrography: (A. Irving and S. Kuehner, UWS) Sparse, very small mineral clasts of anorthite, olivine, pigeonite and augite occur within a dominant extremely fine grained, microvesicular matrix containing accessory kamacite, troilite and minor barite.

Geochemistry: Olivine (Fa34.0-35.8, FeO/MnO = 86-94, N = 2), pigeonite (Fs22.7-28.6Wo8.2-8.8, FeO/MnO = 49-59, N = 2), augite (Fs17.1-17.4Wo38.5-36.6, FeO/MnO = 51-54, N = 2), anorthite (An95.8-96.9Wo0.4-0.2, N = 2).

Classification: Lunar (feldspathic regolith melt breccia).

Specimens: 20.62 g including a polished slice and one polished thin section at UWB; remainder with A. Bouragaa, A. Habibi, M. Lyon and M. Ouzillou.

Data from:
  MB108
  Table 0
  Line 0:
State/Prov/County:Saguia el Hamra
Place of purchase:Agadir
Date:2018 Nov
Latitude:27.411°N
Longitude:9.845°W
Mass (g):12168
Pieces:several
Class:Lunar (feldsp. breccia)
Shock stage:high
Weathering grade:low
Fayalite (mol%):34.9-35.8
Ferrosilite (mol%):22.7-28.6; 17.1-17.4
Wollastonite (mol%):8.2-8.8; 38.5-36.5
Classifier:A. Irving and S. Kuehner, UWS
Type spec mass (g):20.62
Type spec location:UWB
Main mass:A. Bouragaa/A. Habibi/M. Lyon/M. Ouzillou
Comments:Work names AB18-69, Lyon18-1; 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, Burke Museum of Natural History and Culture, Box 353010 Seattle, WA 98195, United States (institutional address; updated 9 Oct 2023)
Catalogs:
References: Published in Meteoritical Bulletin, no. 108 (2020) Meteorit. Planet. Sci. 55, 1146-1150
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Photos:
CreditPhotos
Photos from the Encyclopedia of Meteorites:
Sergey Vasiliev   
Geography:

Western Sahara
Coordinates:
     Recommended::   (27° 24' 40"N, 9° 50' 42"W)

Statistics:
     This is 1 of 117 approved meteorites from Saguia el Hamra, Western Sahara (plus 1 unapproved name)
     This is 1 of 286 approved meteorites from Western Sahara (plus 20 unapproved names)
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