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Northwest Africa 11748
Basic information Name: Northwest Africa 11748
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 11748
Observed fall: No
Year found: 2011
Country: (Northwest Africa)
Mass:help 27.5 g
Classification
  history:
Recommended:  Eucrite    [explanation]

This is 1 of 398 approved meteorites classified as Eucrite.   [show all]
Search for other: Achondrites, Eucrites, and HED achondrites
Comments: Approved 19 Apr 2018
Writeuphelp
Writeup from MB 107:

Northwest Africa 11748 (NWA 11748)

(Northwest Africa)

Purchased: 2011

Classification: HED achondrite (Eucrite)

Petrography: Sample is brecciated, containing subophitic gabbroic clasts of pyroxene and plagioclase set in a finer grained matrix of the same assemblage. Accessory phases include apatite, merrillite, zircon, ilmenite and rare baddeleyite.

Geochemistry: Mineral compositions and geochemistry: Pyroxene yield bulk Fe/Mn ratios of 31.49 (N=34). Orthopyroxene (En35Fs58Wo7; N=29) contain abundant exsolution lamella of augite composition (En30Fs29Wo41; N=5). Feldspar yields highly anorthitic compositions averaging An91 (N=20). Mineral chemistry measured by EMP.

Classification: Eucrite (monomict breccia)

Data from:
  MB107
  Table 0
  Line 0:
Place of purchase:Tucson
Date:P 2011
Mass (g):27.5
Pieces:1
Class:Eucrite
Ferrosilite (mol%):58.1±1.3 (N=34)
Wollastonite (mol%):6.6± 1.7
Classifier:L. F. White and I. Nicklin, ROM
Type spec mass (g):6.1
Type spec location:ROM
Main mass:D. Gregory
Comments:Sample number LM58207 in the Royal Ontario Museum collection. Formerly named ROM060.; submitted by Lee White
Institutions
   and collections
ROM: Royal Ontario Museum, 100 Queen's Park, Toronto, Ontario M5S 2C6, Canada (institutional address; updated 18 Oct 2011)
Gregory: David Gregory, 230 First Avenue, Suite 108, St. Thomas, Ontario N5R 4P5, Canada (private address)
Catalogs:
References: Published in Meteoritical Bulletin, no. 107, in preparation (2018)
Find references in NASA ADS:
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Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 6275 approved meteorites from (Northwest Africa) (plus 2026 unapproved names)

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