Meteoritical Bulletin: Entry for Chwichiya 003

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Chwichiya 003

Basic information

Name: Chwichiya 003
This is an OFFICIAL meteorite name.
Abbreviation: There is no official abbreviation for this meteorite.
Observed fall: No
Year found: 2018
Country: Western Sahara
Mass: 32.2 g

Classification
history:

Meteoritical Bulletin:	MB 108	(2020)	CM2
Recommended:			CM2 [explanation]

This is 1 of 544 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 15 May 2019

Writeup

Writeup from MB 108:

Chwichiya 003 27°05’26"N, 11°10’12"W

Saguia el Hamra, Western Sahara

Find: 2018 Dec

Classification: Carbonaceous chondrite (CM2)

Physical characteristics: Many dark, irregular fragments. Cut surface reveals a dark interior.

Petrography: (J. Gattacceca, CEREGE) Chondrite with small chondrules (average apparent size about 250 µm) set in an abundant (79 vol% by point counting) fine-grained iron-rich matrix containg phyllosilicates and carbonates. Opaque minerals are FeS, magnetite, rare metal.

Geochemistry: Olivine Fa_23.0±24.1, range Fa_0.9-54.1(n=11). Low-ca pyroxene Fs_2.1±1.2Wo_1.0±0.3(n=4). Defocused (10 µm) microprobe total in the matrix is 87.7±2.4 (n=9).

Classification: Carbonaceous chondrite (CM2).

Specimens: Type specimen at CEREGE. Main mass with Pierre-Marie Pelé

Data from:
  MB108
  Table 0
  Line 0:

State/Prov/County:	Saguia el Hamra
Date:	2018 Dec
Latitude:	27°05'26"N
Longitude:	11°10'12"W
Mass (g):	32.16
Pieces:	many
Class:	CM2
Fayalite (mol%):	23.0±24.1 (n=11)
Ferrosilite (mol%):	2.1±1.2 (n=4)
Wollastonite (mol%):	1.0±0.3
Magnetic suscept.:	4.35
Classifier:	J. Gattacceca, CEREGE
Type spec mass (g):	6.83
Type spec location:	CEREGE
Main mass:	Pierre-Marie Pelé
Comments:	work name PM19C1; submitted by Jérôme 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. 108 (2020) Meteorit. Planet. Sci. 55, 1146-1150

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Photos:

Credit	Photos
Photos uploaded by members of the Encyclopedia of Meteorites. (Caution, these are of unknown reliability)
Christophe PICQ

Geography:

Western Sahara

Coordinates:
Recommended::	(27° 5' 26"N, 11° 10' 12"W)

Statistics:
This is 1 of 93 approved meteorites from Saguia el Hamra, Western Sahara
This is 1 of 227 approved meteorites from Western Sahara (plus 19 unapproved names)

Proximity search:

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