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Northwest Africa 3211
Basic information Name: Northwest Africa 3211
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 3211
Observed fall: No
Year found: 2005
Country: (Northwest Africa)
Mass:help 89.2 g
Meteoritical Bulletin:  MB 94  (2008)  Eucrite
Recommended:  Eucrite    [explanation]

This is 1 of 589 approved meteorites (plus 1 unapproved name) classified as Eucrite.   [show all]
Search for other: Achondrites, Eucrites, and HED achondrites
Comments: Approved 8 Sep 2008
Writeup from MB 94:

Northwest Africa 3211

Northwest Africa

Find: 2005

Achondrite (eucrite)

History: A single stone of 89.2 g was purchased 2005 in Erfoud by M. Chinellato.

Physical characteristics: The sample has no fusion crust.

Petrography: (V. Moggi Cecchi, G. Pratesi, MSP) A polymict breccia consisting of basaltic and mineral clasts set into a fine-grained matrix of exsolved pyroxene, clinopyroxene and plagioclase. The large clasts are predominantly plagioclase and exsolved pyroxene, with minor clinopyroxene. Minor phases include silica, ilmenite and Al-Ti-chromite. Exsolution lamellae in pyroxene are generally very fine (1–2 μm width).

Geochemistry: Plagioclase An86.6; Pyroxene ranges Fs43.9–55.6, En36.2–54.2, Wo2.0–21.5. Oxygen isotopes (I. Franchi, R. Greenwood, OU) δ17O = 1.71‰, δ18O = 3.85‰, Δ17O = -0.25‰.

Classification: Achondrite (eucrite) with moderate degree of shock and low degree of weathering. Possibly paired with NWA 3212.

Type specimens: A total of 17.9 g and one thin section are on deposit at MSP, Prato. M. Chinellato holds the main mass.

Data from:
  Table 2
  Line 4:
State/Prov/County:Northwest Africa
Mass (g):89.2
Ferrosilite (mol%):43.9-55.6
Wollastonite (mol%):2-21.5
Classifier:V. Moggi Cecchi, G. Pratesi, Museo di Scienze Planetarie
Type spec mass (g):17.9
Type spec location:MSP
Main mass:MChin
Comments:δ17O = 1.71‰, δ18O = 3.85‰, Δ17O = -0.25‰
Plots: O isotopes:  
   and collections
MSP: Museo di Scienze Planetarie, Via Galcianese 20/H, 59100 Prato, Italy, Italy; Website (institutional address; updated 22 Oct 2022)
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)
MChin: Matteo Chinellato, Via Triestina, 126/A-30030 Tessera, Venezia, Italy; Website (private address)
References: Published in Meteoritical Bulletin, no. 94, MAPS 43, 1551-1588 (2008)
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     This is 1 of 9370 approved meteorites from (Northwest Africa) (plus 1875 unapproved names)

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