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Northwest Africa 4907
Basic information Name: Northwest Africa 4907
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 4907
Observed fall: No
Year found: 2005
Country: (Northwest Africa)
Mass:help 2.9 kg
Classification
  history:
Recommended:  H3    [explanation]

This is 1 of 644 approved meteorites (plus 2 unapproved names) classified as H3.   [show all]
Search for other: H chondrites, H chondrites (type 3), Ordinary chondrites, and Ordinary chondrites (type 3)
Comments: Approved 17 Oct 2021
Writeuphelp
Writeup from MB 110:

Northwest Africa 4907 (NWA 4907)

(Northwest Africa)

Purchased: 2005

Classification: Ordinary chondrite (H3)

History: The meteorite was purchased from a meteorite dealer in Morocco.

Physical characteristics: Brownish rock without fusion crust.

Petrography: The meteorite shows a dark brownish interior and displays a chondritic texture with separated, sharply defined, and mostly rounded chondrules (apparent mean diameter about 300 µm). FeNi metal and sulfides and are strongly altered to Fe-hydroxides.

Data from:
  MB110
  Table 0
  Line 0:
Place of purchase:Morocco
Date:P 2005
Mass (g):2900
Pieces:1
Class:H3
Shock stage:S2
Weathering grade:W3
Fayalite (mol%):16.8±6.7 (0.9-23.2, n=40)
Ferrosilite (mol%):12.6±5.6 (4.4-19.0, n=27)
Wollastonite (mol%):1.4±0.9 (0.4-2.9, n=27)
Magnetic suscept.:4.75
Classifier:A. Greshake, MNB
Type spec mass (g):21.5
Type spec location:MNB
Main mass:anonymous
Comments:Submitted by Ansgar Greshake
Institutions
   and collections
MNB: Museum für Naturkunde, Invalidenstraße 43, D-10115 Berlin, Germany (institutional address; updated 24 Dec 2011)
Catalogs:
References: Published in Meteoritical Bulletin, no. 110, in preparation (2021)
Find references in NASA ADS:
Find references in Google Scholar:
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 8024 approved meteorites from (Northwest Africa) (plus 1951 unapproved names)

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