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| Acfer 331 | |||||||||||||||||||||
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| 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:  750 g | ||||||||||||||||||||
| Classification history: |
This is 1 of 641 approved meteorites classified as CM2. [show all] Search for other: Carbonaceous chondrites, Carbonaceous chondrites (type 2), CM chondrites, and CM-CO clan chondrites | ||||||||||||||||||||
| Writeup |
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: |
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| Institutions and collections |
MNHNP: Museum National d'Histoire Naturelle, IMPMC-CP52, 57 rue Cuvier, 75005 Paris, France, France; Website (institutional address) 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) |
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| References: | Published in Meteoritical Bulletin, no. 87, MAPS 38, A189-A248 (2003)
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Geography:
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Statistics: This is 1 of 428 approved meteorites from Tamanghasset, Algeria (plus 2 unapproved names) (plus 2 impact craters) This is 1 of 1400 approved meteorites from Algeria (plus 33 unapproved names) (plus 4 impact craters) | ||||||||||||||||||||
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