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Northwest Africa 2806
Basic information Name: Northwest Africa 2806
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 2806
Observed fall: No
Year found: 2005
Country: (Northwest Africa)
Mass:help 148.4 g
Classification
  history:
Meteoritical Bulletin:  MB 91  (2007)  L6-imp melt breccia
Recommended:  L6-melt breccia    [explanation]

This is 1 of 48 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 28 Mar 2007
Writeuphelp
Writeup from MB 91:

Northwest Africa 2806

Northwest Africa

Find: 2005

Ordinary chondrite (L6, impact-melt breccia)

History: M. Chinellato purchased a dark brown stone in Erfoud, Morocco.

Physical characteristics: The 148.4 g mass has a dark brown crust and some metal veins on its surface. A cut surface on the type specimen displays a rather homogeneous fine-grained texture, with sparse black metal veins.

Petrography: (V. Moggi Cecchi and G. Pratesi, MSP) In thin section, the sample shows a recrystallization texture with a few grains of residual metal in a matrix of feldspathic glass containing medium-grained olivine and pyroxene crystals. Abundant dark portions, numerous cracks and microfaults, as well as metal veins, are also present.

Mineral composition and geochemistry: Olivine (Fa24.3; n = 13), low-Ca pyroxene (Fs20.6En75.6Wo0.2; n = 11), augite (Fs9.0En47.0Wo43.9), feldspathic glass (An27.9Ab67.7Or4.4).

Classification: Ordinary chondrite (L6), impact-melt breccia; S3, W1.

Type specimen: A total of 21.22 g and one thin section are on deposit at MSP (inventory number MSP 5033). MChin holds the main mass.

Data from:
  MB91
  Table 2
  Line 116:
Date:2005
Mass (g):148.4
Pieces:1
Class:L6 (IMB)
Shock stage:S3
Weathering grade:W1
Fayalite (mol%):24.3
Ferrosilite (mol%):20.6
Classifier:V. Moggi Cecchi and G. Pratesi, MSP
Type spec mass (g):21
Type spec location:MSP
Main mass:MChin
Institutions
   and collections
MSP: Museo di Scienze Planetarie, Via Galcianese 20/H, 59100 Prato, Italy, Italy; Website (institutional address; updated 5 Mar 2014)
MChin: Matteo Chinellato, Via Triestina, 126/A-30030 Tessera, Venezia, Italy; Website (private address)
Catalogs:
References: Published in Meteoritical Bulletin, no. 91, MAPS 42, 413-466 (2007)
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Photos:
CreditPhotos
Photos from the Encyclopedia of Meteorites:
Matteo Chinellato   
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 7385 approved meteorites from (Northwest Africa) (plus 1955 unapproved names)

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