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Northwest Africa 2570
Basic information Name: Northwest Africa 2570
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 2570
Observed fall: No
Year found: 2004
Country: (Northwest Africa)
Mass:help 12.4 g
Meteoritical Bulletin:  MB 91  (2007)  CV3
Recommended:  CV3    [explanation]

This is 1 of 622 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 2570

Northwest Africa

Find: November 2004

Carbonaceous chondrite (CV3)

History and physical characteristics: H. Strufe purchased three gray-black fragments for a total mass of 12.4 g in Erfoud, Morocco, in November 2004. One face is smooth from desert polishing while the others are rough and broken.

Petrography: (R. Bartoschewitz, Bart) Well-defined chondrules 0.2–1.0 mm in diameter (average ~0.6 mm; abundance ~30 vol%), dominated by PO chondrules, are embedded in a fine-grained matrix together with CAIs, mineral and chondrule fragments. Minor phases are kamacite, taenite, troilite, perovskite, hercynite, and chromite.

Mineral compositions and geochemistry: (R. Bartoschewitz, Bart; P. Appel and B. Mader, Kiel) Olivine (Fa15.6, range Fa0.3–47.4; n = 19), orthopyroxene (Fs0.6–4.8Wo0.5–3.4; Al2O3 = 0.3–1.6, n = 9), pigeonite (Fs14.7Wo10.9; Al2O3 = 3.3), augite (Fs0.5Wo42.9; Al2O3 = 3.9, n = 2), kamacite (Ni = 4.2–6.1, Co = 0.5–1.5), taenite (Ni = 40.6– 42.3, Co = 0.3), chromite (Al2O3 = 4.5, TiO2 = 1.2, MgO = 1.3) (all values in wt%). Oxygen isotopes: (R. C. Greenwood, OU) δ17O = −2.601, δ18O =1.378 (both ‰). Magnetic susceptibility: (Bart) log χ = 3.99 × 10−9 m3/kg.

Classification: Carbonaceous chondrite (CV3); S1, minimal weathering.

Type specimen: A total of 2.5 g is on deposit at Vern. Bart holds 1.7 g and one thin section, and HSSH holds main mass.

Data from:
  Table 2
  Line 103:
Place of purchase:Efround, Morocco
Mass (g):12.4
Weathering grade:W1/2
Magnetic suscept.:3.99
Classifier:R. Bartoschewitz, Bart
Type spec mass (g):2.5
Type spec location:Vernad
Main mass:HSSH
Plots: O isotopes:  
   and collections
Kiel: Geologisches und Mineralogisches Museum, Institut für Geowissenschaften, Christian-Albrechts-Universität Kiel, Ludewig-Mayn-Str. 10, D-24118 Kiel, Germany, Germany (institutional address; updated 13 Sep 2013)
OU: Planetary and Space Sciences Department of Physical Sciences The Open University Walton Hall Milton Keynes MK7 6AA United Kingdom, United Kingdom (institutional address; updated 8 Dec 2011)
Vernad: Vernadsky Institute of Geochemistry and Analytical Chemistry, Russia (institutional address; updated 21 Feb 2016)
Bart: Bartoschewitz Meteorite Laboratory, Weiland 37, D-38518 Gifhorn, Germany; Website (private address; updated 30 Nov 2019)
HSSH: Hanno Strufe, Langenbergstr. 32, 66954 Pirmasens, Germany; Website (private address)
Vern: Vernadsky Institute of Geochemistry and Analytical Chemistry, Russia (institutional address; updated 21 Feb 2016)
References: Published in Meteoritical Bulletin, no. 91, MAPS 42, 413-466 (2007)
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     This is 1 of 9368 approved meteorites from (Northwest Africa) (plus 1875 unapproved names)

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