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Northwest Africa 820
Basic information Name: Northwest Africa 820
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 820
Observed fall: No
Year found: 1999
Country: Morocco
Mass:help 2 kg
Classification
  history:
NHM Catalogue:  5th Edition  (2000)  L3-5
Meteoritical Bulletin:  MB 85  (2001)  L3-5
MetBase:  v. 7.1  (2006)  L3-5
Recommended:  L3-5    [explanation]

This is 1 of 17 approved meteorites (plus 1 unapproved name) classified as L3-5.   [show all]
Search for other: L chondrites, L chondrites (type 3), Ordinary chondrites, and Ordinary chondrites (type 3)
Writeuphelp
Writeup from MB 85:

Northwest Africa 820

Hassi Labyade, Er Rachidia, Morocco

Possibly fell 1999 June, 23 hrs local time

Ordinary chondrite (L3–5)

A.       Pani purchased ~2 kg of a meteorite broken into several fragments from an anonymous finder who claims to have recovered it after observing it fall. Mineralogy and classification (F. Brandstätter, NHMV): a brecciated meteorite covered by black fresh fusion crust; interior is light-grey, with white-grey and dark-grey angular fragments (<1 cm up to several centimeters in size); main part has type 3 texture with well-defined chondrules, some with brownish glass; chondrules in some clasts are slightly deformed and matrix is recrystallized, typical of petrologic type 4 or 5; unequilibrated clast mineralogy includes olivine (Fa0.6–22.8), pyroxene (Fs1.6–19.5), low Ni-metal (Ni = 7.4–7.6 wt%, Co = 0.73–1.06 wt%); equilibrated clast mineralogy includes olivine (Fa23.4–24.8), pyroxene (Fs19.1–23.3), low-Ni metal (Ni = 7.4–7.6 wt%, Co = 0.85–0.97 wt%); weathering grade, W0. Specimens: type specimen, 560 g, NHMV, main mass, Pani.

Data from:
  MB85
  Table 4
  Line 218:
Origin or pseudonym:Hassi Labyade
Latitude:31°25'N
Longitude:4°11'W
Mass (g):~2000
Pieces:several
Class:L3-5
Institutions
   and collections
NHMV: Naturhistorisches Museum, Burgring 7, 1010 Wien, Austria, Austria; Website (institutional address; updated 18 Jan 2019)
Pani: A. Pani, Meteorites-Minerals-Fossils, Lassallestr. 4/20, A-1020 Vienna, Austria; Website (private address)
Catalogs:
References: Published in Meteoritical Bulletin, no. 85, MAPS 36, A293-A322 (2001)
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Photos:
CreditPhotos
Photos from the Encyclopedia of Meteorites:
Don Edwards      
Geography:

Morocco
Coordinates:
     Catalogue of Meteorites:   (31° 25'N, 4° 11'W)
     Recommended::   (31° 25'N, 4° 11'W)

Statistics:
     This is 1 of 62 approved meteorites from Meknès-Tafilalet, Morocco
     This is 1 of 1394 approved meteorites from Morocco (plus 16 unapproved names) (plus 1 impact crater)
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