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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:help 32.2 g
Classification
  history:
Recommended:  CM2    [explanation]

This is 1 of 533 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
Writeuphelp
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 Fa23.0±24.1, range Fa0.9-54.1 (n=11). Low-ca pyroxene Fs2.1±1.2Wo1.0±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, in preparation (2019)
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Photos:
CreditPhotos
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 84 approved meteorites from Saguia el Hamra, Western Sahara (plus 1 unapproved name)
     This is 1 of 207 approved meteorites from Western Sahara (plus 20 unapproved names)
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