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Northwest Africa 13780
Basic information Name: Northwest Africa 13780
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 13780
Observed fall: No
Year found: 2020
Country: (Northwest Africa)
Mass:help 460 g
Classification
  history:
Recommended:  L6-melt breccia    [explanation]

This is 1 of 71 approved meteorites classified as L6-melt breccia.   [show all]
Search for other: L chondrites, L chondrites (type 4-7), Melted chondrites, Ordinary chondrites, and Ordinary chondrites (type 4-7)
Comments: Approved 8 Apr 2021
Writeuphelp
Writeup from MB 110:

Northwest Africa 13780 (NWA 13780)

(Northwest Africa)

Purchased: 2020

Classification: Ordinary chondrite (L6, melt breccia)

History: The meteorite was purchased from a group of meteorites hunters in Nouadhibou, Mauritania in late 2020.

Physical characteristics: Dark brownish rock without fusion crust.

Petrography: Melt breccia largely consisting of partly recrystallized shock melt regions with characteristic FeNi metal and sufide spherules. Unmelted chondritic regions are of type 6 (plagioclase grain size about 70 μm) and contain sparse relict chondrules; no metal or sulfide veins are observed.

Data from:
  MB110
  Table 0
  Line 0:
Place of purchase:Nouadhibou, Mauritania
Date:P 2020
Mass (g):460
Pieces:1
Class:L6-melt breccia
Shock stage:S4
Weathering grade:W2
Fayalite (mol%):22.6±0.2 (n=4)
Ferrosilite (mol%):19.4±0.2 (n=4)
Wollastonite (mol%):1.4±0.1 (n=4)
Classifier:A. Greshake, MNB
Type spec mass (g):21.3
Type spec location:MNB
Main mass:Salamu Ali
Finder: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 Gattacceca J., McCubbin F.M., Grossman J., Bouvier A., Chabot N.L., D'Orazio M., Goodrich C., Greshake A., Gross J., Komatsu M., Miao B., and Schrader D. (2022) The Meteoritical Bulletin, No. 110. Meteorit. Planet. Sci. 1-4
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Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 9042 approved meteorites from (Northwest Africa) (plus 1870 unapproved names)

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