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Northwest Africa 6220
Basic information Name: Northwest Africa 6220
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 6220
Observed fall: No
Year found: 2010
Country: Morocco
Mass:help 197.4 g
Classification
  history:
Meteoritical Bulletin:  MB 103  (2014)  R5
Recommended:  R5    [explanation]

This is 1 of 38 approved meteorites classified as R5.   [show all]
Search for other: Rumuruti chondrites, Rumuruti chondrites (type 4-7)
Comments: Approved 14 Jan 2014
Writeuphelp
Writeup from MB 103:

Northwest Africa 6220 (NWA 6220)

Erfoud, Morocco

Found: Apr 2010

Classification: Rumuruti chondrite (R5)

Physical characteristics: Three fresh fragments of a single stone with well preserved fusion crusts. Cut surfaces reveal numerous chondrules (40–50%).

Petrography: Chondrules have sizes ranging from 200 ?m to 2 mm.They are chemically equilibrated and often rimmed by opaque phases. Matrix is recrystallized and mainly composed of olivine, plagioclase, pyroxene, sulfides, and chromite.

Geochemistry: Olivine Fa39.9±0.3 (Fe/Mn=83); Ca-poor pyroxene Fs31.2±0.5Wo0.3±0.3 (Fe/Mn=59); Ca-rich pyroxene Fs11.7±0.3Wo45.0±0.1 (Fe/Mn=43).

Classification: Likely paired with NWA 6218.

Data from:
  MB103
  Table 0
  Line 0:
State/Prov/County:Erfoud
Origin or pseudonym:Field No. 1004
Date:Apr 2010
Mass (g):197.43
Pieces:3
Class:R5
Fayalite (mol%):39.9±0.3
Ferrosilite (mol%):21.5 (11.5-31.6)
Wollastonite (mol%):22.6 (0.0-45.1)
Classifier:N. Chaumard and B. Devouard, UBP
Type spec mass (g):30.45
Type spec location:MNHNP
Main mass:PThomas
Finder:Philippe Thomas
Comments:Submitted by CHAUMARD NOEL BERTRAND DEVOUARD
Institutions
   and collections
MNHNP: Museum National d'Histoire Naturelle, IMPMC-CP52, 57 rue Cuvier, 75005 Paris, France, France; Website (institutional address)
PThomas: Philippe Thomas, Meteoritica, La Chave, 07690 St André en Vivarais, France (private address)
UBP: Universite Blaise Pascal, Clermont-Ferrand, France (institutional address)
Catalogs:
References: Published in Meteoritical Bulletin, no. 103, MAPS 52, 1014, May 2017, http://onlinelibrary.wiley.com/doi/10.1111/maps.12888/full
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Photos:
CreditPhotos
Photos uploaded by members of the Encyclopedia of Meteorites.
    (Caution, these are of unknown reliability)
Aeroliths Collection Theodossiou Photo added 19 Apr 2022
Andreas Grünemeyer Photo added 19 Apr 2022
Photo added 19 Apr 2022
Geography:

Morocco
Coordinates:Unknown.

Statistics:
     This is 1 of 2 approved meteorites from Erfoud, Morocco
     This is 1 of 1887 approved meteorites from Morocco (plus 26 unapproved names) (plus 1 impact crater)

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