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Northwest Africa 14855
Basic information Name: Northwest Africa 14855
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 14855
Observed fall: No
Year found: 2022
Country: (Northwest Africa)
Mass:help 1420 g
Classification
  history:
Recommended:  CVred3    [explanation]

This is 1 of 17 approved meteorites classified as CVred3.   [show all]
Search for other: Carbonaceous chondrites, Carbonaceous chondrites (type 3), CV chondrites, and CV-CK clan chondrites
Comments: Approved 9 May 2022
Writeuphelp
Writeup from MB 111:

Northwest Africa 14855 (NWA 14855)

(Northwest Africa)

Purchased: 2022

Classification: Carbonaceous chondrite (CVred3)

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

Physical characteristics: Many dark brownish fragments without fusion crust.

Petrography: The meteorite shows a brownish interior and is composed of large chondrules (mean diameter about 0.9 mm; up to 2.0 mm in diameter), whitish CAIs (up to 5 mm in diameter), and olivine amoeboid aggregates all set into a fine-grained brownish matrix. Opaque phases are metal, chromite, and essentially Ni-free sulfides.

Geochemistry: Ni in sulfides 0.06±0.04 wt%, N=7

Classification: Carbonaceous chondrite (CVred3). Reduced subgroup based on low concentrations of Ni in sulfides.

Data from:
  MB111
  Table 0
  Line 0:
Place of purchase:Morocco
Date:P 2022
Mass (g):1420
Pieces:many
Class:CVred3
Shock stage:S2
Weathering grade:moderate
Fayalite (mol%):9.2±7.6 (1.9-28.3, n=20)
Ferrosilite (mol%):1.0±0.1 (0.8-1.3, n=12)
Wollastonite (mol%):1.0±0.2 (0.7-1.3, n=12)
Classifier:A. Greshake, MNB
Type spec mass (g):20.6
Type spec location:MNB
Main mass:Tomasz Jakubowski and Tomasz Og?aza
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. 111, in preparation (2022)
Find references in NASA ADS:
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Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 8495 approved meteorites from (Northwest Africa) (plus 1899 unapproved names)

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