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Acfer 331
Basic information Name: Acfer 331
     This is an OFFICIAL meteorite name.
Abbreviation: There is no official abbreviation for this meteorite.
Observed fall: No
Year found: 2001
Country: Algeria
Mass:help 750 g
Classification
  history:
Meteoritical Bulletin:  MB 87  (2003)  CM2
MetBase:  v. 7.1  (2006)  CM2
Recommended:  CM2    [explanation]

This is 1 of 496 approved meteorites classified as CM2.   [show all]
Search for other: Carbonaceous chondrites, Carbonaceous chondrites (type 2), CM chondrites, and CM-CO clan chondrites
Writeuphelp
Writeup from MB 87:

Acfer 331

Algeria

Found 2001 December 23

Carbonaceous chondrite (CM2)

Many, black, soft, porous and friable fragments totalling 750 g were found by F. Beroud and C. Boucher. Mineralogy and classification (B. Devouard and J.-L. Devidal, UBP; B. Zanda and M. Denise, MNHNP): matrix is abundant, and chondrules display large fine-grained rims; metal is virtually absent, except for small grains inside chondrules; hydrated phases characteristic of CM2 chondrites, including Fe-rich serpentine and tochilinite (PCPs), are ubiquitous within the matrix. Mean olivine, Fa9.5 (range Fa0.7–45.4); mean low-Ca pyroxene, Fs5.4 (range Fs1.4–20.9). Weathering grade, W0. Specimens: main mass with finders; type specimen, 22.6 g, MNHNP.

Data from:
  MB87
  Table 5
  Line 9:
Date:23 Dec 2001
Latitude:27°35'N
Longitude:4°01'E
Mass (g):750
Pieces:10
Class:CM2
Classifier:B. Devouard and J.-L. Devidal, UBP, B. Zanda and M. Denise, MNHNP
Type spec mass (g):22.6
Main mass:F. Beroud and C. Boucher
Finder:F. Beroud and C. Boucher
Institutions
   and collections
MNHNP: Museum National d'Histoire Naturelle, 61 Rue Buffon, LMCM-CP52, 75005 Paris, France, France; Website (institutional address; updated 8 Nov 2012)
Beroud: F. Beroud, Chatel-Guyon, France; Website (private address)
Boucher: C. Boucher, Lyon, France (private address)
UBP: Universite Blaise Pascal, Clermont-Ferrand, France (institutional address)
Catalogs:
References: Published in Meteoritical Bulletin, no. 87, MAPS 38, A189-A248 (2003)
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Photos:
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Geography:

Algeria
Coordinates:
     Recommended::   (27° 35'N, 4° 1'E)

Statistics:
     This is 1 of 416 approved meteorites from Tamanghasset, Algeria (plus 2 unapproved names) (plus 2 impact craters)
     This is 1 of 771 approved meteorites from Algeria (plus 26 unapproved names) (plus 4 impact craters)
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