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Northwest Africa 12798
Basic information Name: Northwest Africa 12798
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 12798
Observed fall: No
Year found: 2018
Country: (Northwest Africa)
Mass:help 8.42 kg
Classification
  history:
Recommended:  H6-melt breccia    [explanation]

This is 1 of 11 approved meteorites classified as H6-melt breccia.   [show all]
Search for other: H chondrites, H chondrites (type 4-7), Melted chondrites, Ordinary chondrites, and Ordinary chondrites (type 4-7)
Comments: Approved 18 Aug 2019
Writeuphelp
Writeup from MB 108:

Northwest Africa 12798 (NWA 12798)

(Northwest Africa)

Purchased: 2018

Classification: Ordinary chondrite (H6, melt breccia)

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

Physical characteristics: Forty-three brownish fragments without fusion crust.

Petrography: The meteorite is a chondritic melt breccia composed of abundant melt rock and very few H6 chondritic regions (plagioclase grain size about 60 μm) containing some relict chondrule fragments. No metal or sulfide veins are observed.

Data from:
  MB108
  Table 0
  Line 0:
Place of purchase:Morocco
Date:P 2018
Mass (g):8422
Pieces:43
Class:H6-melt breccia
Shock stage:S2
Weathering grade:W3
Fayalite (mol%):17.4±0.3 (n=11)
Ferrosilite (mol%):15.6±0.5 (n=12)
Wollastonite (mol%):1.4±0.3 (n=12)
Classifier:A. Greshake, MNB
Type spec mass (g):38.8
Type spec location:MNB
Main mass:Marcin Cimala
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. 108, in preparation (2019)
Find references in NASA ADS:
Find references in Google Scholar:
Geography: 
Coordinates:Unknown.

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

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