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El Atchane 019
Basic information Name: El Atchane 019
     This is an OFFICIAL meteorite name.
Abbreviation: There is no official abbreviation for this meteorite.
Observed fall: No
Year found: 2020
Country: Algeria
Mass:help 50 g
Classification
  history:
Recommended:  CM2    [explanation]

This is 1 of 555 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 23 Aug 2021
Writeuphelp
Writeup from MB 110:

El Atchane 019        29°43’14.1"N, 4°25’31.0"E

Ouargla, Algeria

Find: 2020 Nov

Classification: Carbonaceous chondrite (CM2)

Petrography: (J. Gattacceca, CEREGE) Chondrite with ~200 µm chondrules set in abundant (~70 vol%) fine-grained iron-rich matrix. Oopaque minerals are sulfides, magnetite, and rare metal enclosed in silicates.

Geochemistry: Olivine Fa9.4±15.8, range Fa0.7-52.5 (n=12). Cr2O3 in ferroan olivine is 0.38±0.12 (n=7). Defocused matrix analyses give an analytical total of 78.1 wt% and FeO = 31.9 wt%.

Classification: Carbonaceous chondrites (CM2). The low analytical total indicates the presence of hydrous phases in the matrix.

Specimens: Type specimen at CEREGE. Main mass with Jérémy Bassemon

Data from:
  MB110
  Table 0
  Line 0:
State/Prov/County:Ouargla
Date:2020 Nov
Latitude:29°43'14.1"N
Longitude:4°25'31.0"E
Mass (g):50
Pieces:20
Class:CM2
Fayalite (mol%):9.4±15.8 (n=12)
Classifier:J. Gattacceca, CEREGE
Type spec mass (g):10
Type spec location:CEREGE
Main mass:Jérémy Bassemon
Finder:anonymous
Comments:work name JB25; submitted by Jerome Gattacceca
Institutions
   and collections
CEREGE: CEREGE BP 80 Avenue Philibert, Technopole de l'Arbois 13545 Aix-en-Provence Cedex 4 France, France (institutional address; updated 29 Oct 2018)
Catalogs:
References: Published in Meteoritical Bulletin, no. 110, in preparation (2021)
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Geography:

Algeria
Coordinates:
     Recommended::   (29° 43' 14"N, 4° 25' 31"E)

Statistics:
     This is 1 of 34 approved meteorites from Ouargla, Algeria
     This is 1 of 1140 approved meteorites from Algeria (plus 27 unapproved names) (plus 4 impact craters)
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