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Northwest Africa 2700
Basic information Name: Northwest Africa 2700
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 2700
Observed fall: No
Year found: 2004
Country: (Northwest Africa)
Mass:help 31.7 g
Classification
  history:
Meteoritical Bulletin:  MB 90  (2006)  Lunar (olivine gabbro with regolith breccia)
Recommended:  Lunar    [explanation]

This is 1 of 81 approved meteorites classified as Lunar.   [show all]
Search for other: Lunar meteorites
Comments: Approved 1 Sep 2006
Writeuphelp
Writeup from MB 90:

Northwest Africa 2700

Morocco

Find: 2004

Achondrite (lunar, olivine gabbro with regolith breccia)

History: A light green to dark complete stone of 31.7 g was purchased in Erfoud, Morocco, in November 2004.

Petrography and Geochemistry: (T. Bunch and J. Wittke, NAU) The specimen consists of olivine gabbro and regolith breccia lithologies. The cumulate olivine gabbro contains ~50 vol% olivine (Fa29.3–34.7; FeO/MnO = 94), pigeonite (Fs22–28.3Wo5.6–10; FeO/MnO = 52), augite (Fs13.2Wo38.5), plagioclase and minor maskelynite (An89), Ba-rich alkali feldspar (Or92An4; BaO = 8.9 wt%), Cr-spinel, ilmenite, phosphate, and troilite. The breccia lithology is dominated by small olivine gabbro fragments and also contains subvariolitic basalt clasts with zoned pyroxenes (Fs44Wo29 to Fs58Wo23; FeO/MnO = 57); plagioclase (An90); ilmenite, and Fe-rich, low-Ca pyroxene (Fs80.8Wo14); symplectites of fayalite (Fa91); hedenbergite (Fs60.3Wo32.7); silica; clear to yellow glass spherules; agglutinates, high silica fayalitic rocks (Fa95.6); ulvöspinel; K2O -rich glass (K2O = 8.8; SiO2 = 77 [both wt%]), and pure SiO2.

Classification: Achondrite (lunar, olivine gabbro with regolith breccia) where the olivine gabbro is moderately shocked and minimally weathered. Note: This sample may be paired with NWA 773.

Specimens: A 6.8 g type specimen and two thin sections are on deposit at NAU. An anonymous finder holds the main mass.

Data from:
  MB90
  Table 2
  Line 44:
Place of purchase:Unknown
Date:2004
Mass (g):31.7
Pieces:1
Class:Lunar
Classifier:J. Wittke and T. Bunch
Type spec mass (g):6.8
Type spec location:NAU
Institutions
   and collections
NAU: Geology, Bldg 12 Knoles Dr Northern Arizona University, Flagstaff, AZ 86011, United States; Website (institutional address; updated 12 Apr 2012)
Catalogs:
References: Published in Meteoritical Bulletin, no. 90, MAPS 41, 1383-1418 (2006)
Find references in NASA ADS:
Find references in Google Scholar:
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 6506 approved meteorites from (Northwest Africa) (plus 2021 unapproved names)

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