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Northwest Africa 5687
Basic information Name: Northwest Africa 5687
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 5687
Observed fall: No
Year found: 2008
Country: (Northwest Africa)
Mass:help 146 g
Classification
  history:
Meteoritical Bulletin:  MB 104  (2015)  R3-6
Recommended:  R3-6    [explanation]

This is 1 of 19 approved meteorites classified as R3-6.   [show all]
Search for other: Rumuruti chondrites, Rumuruti chondrites (type 3)
Comments: Approved 18 Feb 2015
Writeuphelp
Writeup from MB 104:

Northwest Africa 5687 (NWA 5687)

(Northwest Africa)

Purchased: 2008

Classification: Rumuruti chondrite (R3-6)

History: The meteorite was bought from a Moroccan meteorite dealer in 2008.

Petrography: The meteorite displays a dark brownish interior and is a chondritic breccia consisting of small heterogeneously distributed lithic fragments embedded into a fine-grained clastic matrix. Clasts are of type 3-6, the clastic matrix of type 3. Low-Ca pyroxene occurs only in unequilibrated lithologies. Opaque phases are chromite and FeNi-sulfides; metallic FeNi has not been found.

Geochemistry: Olivine in type 6 lithologies, Fa38.5; olivine in type 3 lithologies, Fa29±12.7 (0.9-41.9, n=36); low-Ca pyroxene in type 3 lithologies, Fs13.8±5.7Wo0.9±0.7 (Fs7.4-29.9Wo0.3-3.2, n=34).

Data from:
  MB104
  Table 0
  Line 0:
Place of purchase:Erfoud, Morocco
Date:P 2008
Mass (g):146
Pieces:1
Class:R3-6
Shock stage:S1
Weathering grade:W2/3
Fayalite (mol%):38.5; 29
Ferrosilite (mol%):13.8
Wollastonite (mol%):0.9
Classifier:A. Greshake, MNB
Type spec mass (g):22
Type spec location:MNB
Main mass:Beat Booz
Comments:Submitted by Ansgar Greshake
Institutions
   and collections
MNB: Museum für Naturkunde, Invalidenstrasse 43, D-10115 Berlin, Germany (institutional address)
Catalogs:
References: Published in Meteoritical Bulletin, no. 104, MAPS 52, 2284, Octover 2017, http://onlinelibrary.wiley.com/doi/10.1111/maps.12930/full
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Photos:
CreditPhotos
Photos uploaded by members of the Encyclopedia of Meteorites.
    (Caution, these are of unknown reliability)
Beat Booz   
Geography: 
Coordinates:Unknown.

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

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