Meteoritical Bulletin: Entry for El Atchane 019

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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: 50 g

Classification
history:

Meteoritical Bulletin:	MB 110	(2022)	CM2
Recommended:			CM2 [explanation]

This is 1 of 636 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

Writeup

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 Fa_9.4±15.8, range Fa_0.7-52.5(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 10 Jun 2023)

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 49 approved meteorites from Ouargla, Algeria (plus 1 unapproved name)
This is 1 of 1358 approved meteorites from Algeria (plus 30 unapproved names) (plus 4 impact craters)

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Revision
history:

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