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Northwest Africa 1841
Basic information Name: Northwest Africa 1841
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 1841
Observed fall: No
Year found: 2003
Country: (Northwest Africa)
Mass:help 32.3 g
Classification
  history:
Meteoritical Bulletin:  MB 89  (2005)  Ureilite
MetBase:  v. 7.1  (2006)  Ureilite
Recommended:  Ureilite    [explanation]

This is 1 of 572 approved meteorites classified as Ureilite.   [show all]
Search for other: Achondrites, Ureilites
Writeuphelp
Writeup from MB online:

Northwest Africa 1841

Morocco

Found 2003

Achondrite (ureilite)

A 39.3 g, complete and fully crusted stone was purchased in Rissani, Morocco, 2003 June. Description and classification (J. Wittke and T. Bunch, NAU): typical ureilite with prominent development of carbonaceous/reduced material along internal fractures and (001) planes of olivine, in addition to typical interstitial areas. Olivine cores, Fa21.8 (Cr2O3 = 0.78 wt %, rims, Fa8.2 – 0.8 (Cr2O3 = 0.80 wt. %); pigeonite, Fs18.3Wo8; olivine metal inclusions, Ni = 0.92 wt %; interstitial metal, Ni = 4.45 wt. %, Si = 0.57 wt. %. Shock level, S2; low degree of weathering. Specimens: type specimen 8.4 g, NAU; main mass, Oakes.

Data from:
  MB89
  Table 7
  Line 30:
Place of purchase:Morocco
Date:2003
Mass (g):32.3
Pieces:1
Class:Ure
Weathering grade:W1
Fayalite (mol%):0.8-21.8
Ferrosilite (mol%):18.3
Classifier:
Type spec mass (g):8.4
Institutions
   and collections
NAU: Geology, Bldg 12 Knoles Dr Northern Arizona University, Flagstaff, AZ 86011, United States; Website (institutional address; updated 12 Apr 2012)
Oakes: Nelson Oakes, Route 1, House 50C, Uniondale, PA 18470, United States; Website (private address)
Catalogs:
References: Published in Meteoritical Bulletin, no. 89, MAPS 40, A201-A263 (2005)
Find references in NASA ADS:
Find references in Google Scholar:
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 7688 approved meteorites from (Northwest Africa) (plus 1972 unapproved names)

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