header
  MetSoc Home            Publications            Contacts  
Search the Meteoritical Bulletin Database
Last update: 27 Nov 2022
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:  
Abadla 002
Basic information Name: Abadla 002
     This is an OFFICIAL meteorite name.
Abbreviation: There is no official abbreviation for this meteorite.
Observed fall: No
Year found: 2022
Country: Algeria
Mass:help 800 g
Classification
  history:
Recommended:  CM2    [explanation]

This is 1 of 614 approved meteorites classified as CM2.   [show all]
Search for other: Carbonaceous chondrites, Carbonaceous chondrites (type 2), CM chondrites, and CM-CO clan chondrites
Comments: Approved 13 May 2022
Writeuphelp
Writeup from MB 111:

Abadla 002        30°28’58.07"N, 01°37’15.76"W

Bechar, Algeria

Find: 2021

Classification: Carbonaceous chondrite (CM2)

History: Many identically appearing pieces were found on December 5, 8 and 13, 2021, along an approximately 10 km traverse. Purchased from Mouha Bouyat on February 22, 2022.

Physical characteristics: Dark fusion-crusted exterior, broken surface reveals numerous small chondrules set in a dark gray matrix that makes up over 50% of this meteorite. Small CAIs are visible.

Petrography: (A. Ross and C. Agee, UNM) Chondrules and Small CAIs set in a fine-grained matrix (>50 vol%) . Most chondrules are porphyritic type I with predominantly forsteritic olivines. Matrix olivines are mostly fragmental and ferroan. Apparent mean chondrule diameter approximately 300 μm. Aluminous diopside, troilite, Fe-Ni sulfide, and low-Ni iron were detected.

Geochemistry: (A. Ross and C. Agee, UNM) Type I chondrule olivine Fa0.9±0.3, Cr2O3=0.37±0.20 (wt%) n=4; ferroan matrix olivine Fa38.3±6.9, Fe/Mn=97±22, Cr2O3=0.29±0.14 (wt%) n=4; low-Ca pyroxene Fs3.0±2.3Wo2.4±2.1, n=4; matrix (20 ?m defocused microprobe beam) analytical totals of 77.6±2.4 wt% and FeO=35.5±3.4 wt%, n=7.

Classification: Carbonaceous chondrite (CM2). The low analytical totals in the matrix indicate the presence of hydrous phases.

Specimens: 20 g on deposit at UNM, Mouha Bouyat and Matthew Stream hold the main mass.

Data from:
  MB111
  Table 0
  Line 0:
State/Prov/County:Bechar
Date:2021
Latitude:30°28'58.07"N
Longitude:01°37'15.76"W
Mass (g):800
Pieces:Many
Class:CM2
Shock stage:low
Weathering grade:low
Fayalite (mol%):0.9±0.3, 38.3±6.9
Ferrosilite (mol%):3.0±2.3
Wollastonite (mol%):2.4±2.1
Classifier:C. Agee, UNM
Type spec mass (g):20
Type spec location:UNM
Main mass:Mouha Bouyat and Matthew Stream
Comments:Fieldname MST-12; 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)
Catalogs:
References: Published in Meteoritical Bulletin, no. 111, in preparation (2022)
Find references in NASA ADS:
Find references in Google Scholar:
Geography:

Algeria
Coordinates:
     Recommended::   (30° 28' 58"N, 1° 37' 16"W)

Statistics:
     This is 1 of 27 approved meteorites from Bechar, Algeria (plus 1 unapproved name)
     This is 1 of 1232 approved meteorites from Algeria (plus 29 unapproved names) (plus 4 impact craters)
Proximity search:
Find nearby meteorites: enter search radius (km):

Direct link to this page