header
  MetSoc Home            Publications            Contacts  
Search the Meteoritical Bulletin Database
Last update: 14 Sep 2019
Search for: Search type: Search limits: Display: Publication:
Names
Text help
Places
Classes
Years
Contains
Starts with
Exact
Sounds like
NonAntarctic
Falls  Non-NWAs
What's new
  in the last:
Limit to approved meteorite names
Search text:  
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:
Recommended:  Lunar (feldsp. breccia)    [explanation]

This is 1 of 175 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, Box 353010 Seattle, WA 98195, United States (institutional address; updated 27 Jul 2012)
Catalogs:
References: Published in Meteoritical Bulletin, no. 108, in preparation (2019)
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)
Wang Ziyao         
Geography:

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

Statistics:
     This is 1 of 82 approved meteorites from Saguia el Hamra, Western Sahara (plus 1 unapproved name)
     This is 1 of 204 approved meteorites from Western Sahara (plus 20 unapproved names)
Proximity search:
Find nearby meteorites: enter search radius (km):

Direct link to this page