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Northwest Africa 2381
Basic information Name: Northwest Africa 2381
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 2381
Observed fall: No
Year found: 2004
Country: (Northwest Africa)
Mass:help 132 g
Classification
  history:
Meteoritical Bulletin:  MB 89  (2005)  LL-melt breccia
MetBase:  v. 7.1  (2006)  LL
Recommended:  LL    [explanation]

This is 1 of 234 approved meteorites classified as LL.   [show all]
Search for other: LL chondrites, Ordinary chondrites
Writeuphelp
Writeup from MB 89:

Northwest Africa 2381

Northwest Africa

Purchased 2004 August

Ordinary chondrite (LL melt breccia)

A 132 g complete and crusted stone was purchased in Erfoud, Morocco. Description and classification (T. Bunch and J. Wittke, NAU): highly shocked (melted and brecciated) LL chondrite (S2-6). Contains sparse marble-shaped (0.8-1.4 mm) LL7 clasts that show equigranular, recrystallized texture with abundant 120° triple grain junctions. Olivine, Fa 31.8 (FeO/MnO = 63); orthopyroxene, Fs25.1Wo1.8; chromite, cr# = 86, Fe# = 92. Clasts are enclosed by a thick mantle (up to 5 mm) of LL chondrite, similar in composition, but without recrystallization (shock level = S3). These mantles are surrounded by highly shocked LL materials that range from complete melt with quench products of olivine, Ca-pyroxenes, and feldspathic glasses (S6) to intense, shock darkened LL clasts (metal melt with injection and maskelynite, S4).  Weathering grade is W2. Specimens: type specimen 21 g, NAU; main mass, GHupé.

Data from:
  MB89
  Table 7
  Line 222:
Place of purchase:Erfoud
Date:2004
Mass (g):132
Pieces:3
Class:LL
Classifier:Ted Bunch, NAU
Type spec mass (g):21
Type spec location:NAU
Main mass:Hupé
Institutions
   and collections
NAU: Geology, Bldg 12 Knoles Dr Northern Arizona University, Flagstaff, AZ 86011, United States; Website (institutional address; updated 12 Apr 2012)
GHupé: Gregory M. Hupé, 9003 Placid Lakes Blvd., Lake Placid, FL 33852, United States; Website (private address)
Catalogs:
References: Published in Meteoritical Bulletin, no. 89, MAPS 40, A201-A263 (2005)
Find references in NASA ADS:
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Photos:
CreditPhotos
Photos from the Encyclopedia of Meteorites:
Don Edwards   
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 6781 approved meteorites from (Northwest Africa) (plus 2047 unapproved names)

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