Meteoritical Bulletin: Entry for Abadla 002

header

MetSoc Home Publications Contacts

Search the Meteoritical Bulletin Database
Last update: 20 Jun 2022
Search for:	Search type:	Search limits:	Display:	Publication:
Names Text Places Classes Years	Contains Starts with Exact Sounds like	NonAntarctic Falls Non-NWAs Has strewnfield		What's new in the last:
Include past classifications in search		Has photo	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: 800 g

Classification
history:

Recommended:

CM2 [explanation]

This is 1 of 610 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

Writeup

help

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 Fa_0.9±0.3, Cr₂O₃=0.37±0.20 (wt%) n=4; ferroan matrix olivine Fa_38.3±6.9, Fe/Mn=97±22, Cr₂O₃=0.29±0.14 (wt%) n=4; low-Ca pyroxene Fs_3.0±2.3Wo_2.4±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

Algeria

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

Statistics:
This is 1 of 24 approved meteorites from Bechar, Algeria
This is 1 of 1194 approved meteorites from Algeria (plus 28 unapproved names) (plus 4 impact craters)

Proximity search:

Direct link to this page