MetSoc Home            Publications            Contacts  
Search the Meteoritical Bulletin Database
Last update: 20 Jun 2022
Search for: Search type: Search limits: Display: Publication:
Text help
Starts with
Sounds like
Falls  Non-NWAs
What's new
  in the last:
Include past classifications in search
Limit to approved meteorite names
Search text:  
Ouargla 004
Basic information Name: Ouargla 004
     This is an OFFICIAL meteorite name.
Abbreviation: There is no official abbreviation for this meteorite.
Observed fall: No
Year found: 2021
Country: Algeria
Mass:help 1046 g
Recommended:  Lunar    [explanation]

This is 1 of 98 approved meteorites classified as Lunar.   [show all]
Search for other: Lunar meteorites
Comments: Approved 11 Nov 2021
Writeup from MB 110:

Ouargla 004        31º14.2913’N, 4º46.7077’E

Ouargla, Algeria

Find: 2021

Classification: Lunar meteorite

History: Nomads discovered black samples that did not correspond to the landscape of the area, marked coordinates and picked them up thinking they were possibly meteorites. Carlos Muñecas purchased the samples from a dealer in Algeria in July 2021.

Physical characteristics: Samples are irregularly shaped and have a glossy black exterior devoid of fusion crust. A cut and polished face shows the interior is breccia of clasts and small FeNi grains (<1vol%).

Petrography: Description and classification (A. Love, App): Sample is a fine-grained breccia composed of mm-sized rounded-angular lithic and mineral fragments set in a flow-textured glassy melt. Lithic clasts are feldspathic breccias, poikilitic norite, troctolite and rare ophitic-textured clasts. Additional minerals are: silica polymorph, spinel, FeNi metal grains, chromite, troilite and ilmenite.

Geochemistry: (A. Love, App) Olivine (Fa31.3±9.4, Fe/Mn=81-109, n=24); low Ca pyroxene (Fs20.0±4.2Wo4.1±0.5, Fe/Mn=47-59, n=8); pigeonite (Fs29.6±2.9Wo10.3±3.0, Fe/Mn=46-58, n=17); high Ca Pyroxene (Fs16.5±4.0Wo40.6±3.2, Fe/Mn=39-70, n=9); plagioclase (An97.0±1.0Or0.3±0.1, n=16).

Classification: (Lunar) feldspathic melt breccia. Based on textures and mineral compositions (Fe/Mn ratios of olivine and pyroxene and An content of plagioclase) sample is a polymict feldspathic melt breccia.

Specimens: Carlos Muñecas (Expometeoritos) holds the main mass. A polished section and an end piece weighing 28.90 g are on deposit at App.

Data from:
  Table 0
  Line 0:
Place of purchase:Algeria
Mass (g):1046
Shock stage:M-S3
Weathering grade:low
Fayalite (mol%):31.3±9.4
Ferrosilite (mol%):20.0±4.2; 29.6±2.9; 16.5±4.0
Wollastonite (mol%):4.1±0.5; 10.3±3.0; 40.6±3.2
Magnetic suscept.:3.31
Classifier:A. Love, App
Type spec mass (g):28.90
Type spec location:App
Main mass:Carlos Muñecas (Expometeoritos)
Comments:Submitted by Anthony Love
   and collections
App: Department of Geology, 572 Rivers St., Appalachian State University, Boone, NC 28608, United States (institutional address; updated 7 Mar 2013)
References: Published in Meteoritical Bulletin, no. 110, in preparation (2021)
Find references in NASA ADS:
Find references in Google Scholar:

     Recommended::   (31° 14' 17"N, 4° 46' 42"E)

     This is 1 of 37 approved meteorites from Ouargla, Algeria (plus 1 unapproved name)
     This is 1 of 1194 approved meteorites from Algeria (plus 28 unapproved names) (plus 4 impact craters)
Proximity search:
Find nearby meteorites: enter search radius (km):

Direct link to this page