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Northwest Africa 4466
Basic information Name: Northwest Africa 4466
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 4466
Observed fall: No
Year found: 2006
Country: (Northwest Africa)
Mass:help 71.3 g
Meteoritical Bulletin:  MB 91  (2007)  CV3
Recommended:  CV3    [explanation]

This is 1 of 602 approved meteorites (plus 1 unapproved name) classified as CV3.   [show all]
Search for other: Carbonaceous chondrites, Carbonaceous chondrites (type 3), CV chondrites, and CV-CK clan chondrites
Comments: Approved 28 Mar 2007
Writeup from MB 91:

Northwest Africa 4466

Northwest Africa

Find: 2006

Carbonaceous chondrite (CV3)

History: Devin Schrader purchased the sample at the Tucson Gem and Mineral Show on 29 January 2006 from a Moroccan meteorite dealer.

Physical characteristics: The total mass of the meteorite before cutting was 71.25 g. It is composed of three pieces: one large piece with two small fragments (1.105 and 2.886 g) that fit back onto the main piece. The meteorite has weathered fusion crust on about 10% of its surface. The color of the meteorite is gray, with visible chondrules and a CAI on the surface.

Petrography: (D. Schrader, UAz; H. Connolly, KCCU) The meteorite contains olivine, pyroxene, plagioclase, Fe,Ni metal, chondrules, and CAIs. The meteorite is dominated by large chondrules (~1 mm) and fine-grained matrix. Some veins of apparent alteration material cross-cut the rock. The rock contains two lithologies. 1) The host lithology contains abundant, well-defined chondrules and some chondrule fragments. The textural types of chondrules observed are BO, PP, PO, and GO with an overall size range for the chondrules of 0.29–2.05 mm. The section contains one highly altered type A CAI. 2) A small clast lithology (~0.4 × 0.7 cm) that contains smaller, closely packed chondrules in contact with a large type B CAI (~0.4 × 0.8 cm). The textural types of chondrules are BO, C, PO, and a Ca-Al-rich chondrule with an overall size range for the chondrules of 0.25–0.63 mm.

Mineral compositions and geochemistry: (D. Schrader, K. Domanik, and D. Hill, UAz) Lithologies: 1) chondrules contain Fa0.39–9.24 (average = Fa2.70±2.42), Fs0.71–3.59 (average = Fs1.83±0.97), and Wo0.40–6.93 (average = Wo2.29±1.87). 2) Chondrules contain Fa16.26–42.01 (average = Fa22.04±9.30), Fs26.60–28.58 (average = Fs27.71±0.92), and Wo0.20–3.23 (average = Wo1.06±1.45).

Classification: Carbonaceous chondrite (CV3).

Type specimen: A total of 14.483 g is on deposit at KCCU. D. Schrader holds the main mass of 54.767 g in four pieces.

Writeup from MB 98:
Type specimen for NWA 4466 (12.3 g) transferred to the AMNH.
Data from:
  Table 2
  Line 339:
Place of purchase:Tucson, Arizona
Date:2006 Jan 29
Mass (g):71.25
Weathering grade:minimal
Classifier:D. Schrader, Uaz; H. Connolly, KCCU
Type spec mass (g):14.5
Type spec location:KCCU
Main mass:DSchrader
   and collections
AMNH: Department of Earth and Planetary Sciences, American Museum of Natural History, Central Park West, New York, NY 10024, United States (institutional address; updated 18 May 2013)
KCCU: Kingsborough College of the City University of New York, Brooklyn, NY 11235, United States (institutional address; updated 28 Dec 2011)
UAz: Lunar and Planetary Laboratory, University of Arizona, 1629 E. University Blvd., Tucson, AZ 85721, United States (institutional address; updated 14 Jan 2012)
DSchrader: Devin Schrader, Lunar and Planetary Laboratory, University of Arizona, Tucson, AZ 85721, United States (private address)
References: Published in Meteoritical Bulletin, no. 91, MAPS 42, 413-466 (2007)
Published in Meteoritical Bulletin, no. 98, MAPS 45, 1530-1551 (2010)
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     This is 1 of 8904 approved meteorites from (Northwest Africa) (plus 1871 unapproved names)

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