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Northwest Africa 2724
Basic information Name: Northwest Africa 2724
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 2724
Observed fall: No
Year found: 2004
Country: (Northwest Africa)
Mass:help 3.8 kg
Classification
  history:
Meteoritical Bulletin:  MB 90  (2006)  Eucrite-pmict
Recommended:  Eucrite    [explanation]

This is 1 of 431 approved meteorites (plus 1 unapproved name) classified as Eucrite.   [show all]
Search for other: Achondrites, Eucrites, and HED achondrites
Comments: Approved 3 Feb 2006
Writeuphelp
Writeup from MB 90:

Northwest Africa 2724

Northwest Africa

Find: 2004

Achondrite (eucrite, polymict)

History: A 3804 g crusted complete stone was purchased in Erfoud, Morocco, in 2004.

Petrography: (J. Wittke and T. Bunch, NAU) The specimen mostly consists of cumulate basalt clasts that range from coarse-grained (~2 mm) to very fine-grained (~0.1 mm) with less than 5 vol% of subophitic basalts observed. Cumulate basaltic clasts are unusually low in ilmenite, chromite, and metal compared with other cumulate eucrites.

Composition: Despite the large range in grain size, pyroxene compositions show a rather narrow range: low-Ca pyroxenes (Fs59.1–62Wo3.2–3.8), pigeonite (Fs46.5–51Wo12.4–16.6), Ca-rich pyroxenes (Fs40–2.1Wo30.5–40.5), plagioclase (An89.4–92.7).

Classification: Achondrite (eucrite, polymict); low shock, minimal weathering.

Specimens: A 34 g type specimen is on deposit at NAU. E. Thompson holds the main mass.

Data from:
  MB90
  Table 2
  Line 66:
Place of purchase:Erfoud, Morocco
Date:2004
Mass (g):3804
Pieces:1
Class:Euc
Shock stage:low-medium
Weathering grade:minimal
Type spec mass (g):21
Institutions
   and collections
NAU: Geology, Bldg 12 Knoles Dr Northern Arizona University, Flagstaff, AZ 86011, United States; Website (institutional address; updated 12 Apr 2012)
Thompson: Edwin Thompson, 5150 Dawn St., Lake Oswego, OR 97035, United States (private address)
Catalogs:
References: Published in Meteoritical Bulletin, no. 90, MAPS 41, 1383-1418 (2006)
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Photos:
CreditPhotos
Photos from the Encyclopedia of Meteorites:
Gi-po Meteorites         
Photos uploaded by members of the Encyclopedia of Meteorites.
    (Caution, these are of unknown reliability)
Andreas Grünemeyer   
AR   
Michael S. Scherman   
Woreczko Jan & Wadi   
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 6900 approved meteorites from (Northwest Africa) (plus 2035 unapproved names)

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