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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 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 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 Gattacceca J., McCubbin F.M., Grossman J., Bouvier A., Chabot N.L., D'Orazio M., Goodrich C., Greshake A., Gross J., Komatsu M., Miao B., and Schrader D. (2022) The Meteoritical Bulletin, No. 110. Meteorit. Planet. Sci. 1-4
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Geography:

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

Statistics:
     This is 1 of 41 approved meteorites from Ouargla, Algeria (plus 1 unapproved name)
     This is 1 of 1232 approved meteorites from Algeria (plus 29 unapproved names) (plus 4 impact craters)
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