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Northwest Africa 12807
Basic information Name: Northwest Africa 12807
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 12807
Observed fall: No
Year found: 2011
Country: (Northwest Africa)
Mass:help 1263 g
Classification
  history:
Meteoritical Bulletin:  MB 108  (2020)  L4
Recommended:  L4    [explanation]

This is 1 of 2062 approved meteorites (plus 5 unapproved names) classified as L4.   [show all]
Search for other: L chondrites, L chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7)
Comments: Approved 27 Jul 2019
Writeuphelp
Writeup from MB 108:

Northwest Africa 12807 (NWA 12807)

(Northwest Africa)

Purchased: 2011 Feb 12

Classification: Ordinary chondrite (L4)

Geochemistry: kamacite Co 0.59±0.09 wt% (0.54-0.67 wt%), Ni 10.6 wt% (7.4-14.3 wt%.

Classification: L4, "black chondrite"

Specimens: The 1263 g TKW includes a main mass of 915 g. There are 7 sawn slices and ends in addition to the main mass, and 3 polished thin sections (PTS), a total of 1263 g remaining after cutting and sample prep. Dealer sold small additional amounts (some tens of grams (?), unknown, not included in TKW) prior to GCW purchasing all the remainder on 2011 Feb 12.

Data from:
  MB108
  Table 0
  Line 0:
Date:P 2011 Feb 12
Mass (g):1263
Pieces:4
Class:L4
Shock stage:S4
Weathering grade:W1
Fayalite (mol%):24.8±0.7 (n=5)
Ferrosilite (mol%):20.9±1.3 (n=11).
Wollastonite (mol%):2.1±1.2
Magnetic suscept.:4.92
Classifier:G.C. Wilson, ROM
Type spec mass (g):68
Type spec location:ROM
Main mass:G.C. Wilson
Comments:Submitted by G.C. Wilson
Institutions
   and collections		 ROM: Royal Ontario Museum, 100 Queen's Park, Toronto, Ontario M5S 2C6, Canada (institutional address; updated 18 Oct 2011)
Catalogs:
References: Published in Meteoritical Bulletin, no. 108 (2020) Meteorit. Planet. Sci. 55, 1146-1150
Find references in NASA ADS:
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Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 9699 approved meteorites from (Northwest Africa) (plus 1854 unapproved names)
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Revision
  history:
  This lists important revisions made to data for this record.

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