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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 565 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 Photo added 20 Oct 2022
AR Photo added 20 Oct 2022
Michael S. Scherman Photo added 20 Oct 2022
Woreczko Jan & Wadi Photo added 20 Oct 2022
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 8745 approved meteorites from (Northwest Africa) (plus 1880 unapproved names)

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