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Northwest Africa 15745
Basic information Name: Northwest Africa 15745
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 15745
Observed fall: No
Year found: 2022
Country: (Northwest Africa)
Mass:help 454 g
Classification
  history:
Recommended:  Ureilite    [explanation]

This is 1 of 625 approved meteorites classified as Ureilite.   [show all]
Search for other: Achondrites, Ureilites
Comments: Approved 23 Feb 2023
Writeuphelp
Writeup from MB 112:

Northwest Africa 15745 (NWA 15745)

(Northwest Africa)

Purchased: 2022 Apr

Classification: Ureilite

History: Bought by Jason Whitcomb in April 2022 from a Moroccan dealer

Petrography: (J. Gattacceca, CEREGE) Rock with granular texture and typical grain size 600 µm. Metal is present as µm-sized aligned inclusions in silicates, and along silicate grain rims where it is mostly replaced by weathering products. Carbon material is found close to silicate grain rims.

Geochemistry: Olivine Fa15.7, CaO 0.30 wt%, Cr2O3 0.72 wt% (n=2). Olivine reduced rims Fa6.6, CaO 0.29 wt%, Cr2O3 0.84 wt% (n=2). Pyroxene Fs14.2Wo4.2, Al2O3 0.71 wt%, Cr2O3 1,18 wt%, TiO2 0.08 wt% (n=2).

Classification: Ureilite

Specimens: Type specimen at CEREGE. Main mass with Jason Whitcomb.

Data from:
  MB112
  Table 0
  Line 0:
Date:P 2022 Apr
Mass (g):454
Pieces:1
Class:Ureilite
Weathering grade:high
Fayalite (mol%):15.7 (n=2)
Magnetic suscept.:4.47
Classifier:J. Gattacceca, CEREGE
Type spec mass (g):25.32
Type spec location:CEREGE
Main mass:Whitcomb Meteorite Collection
Finder:anonymous
Comments:work name JW178; submitted by Jérôme Gattacceca
Institutions
   and collections		 CEREGE: CEREGE BP 80 Avenue Philibert, Technopole de l'Arbois 13545 Aix-en-Provence Cedex 4 France, France (institutional address; updated 29 Oct 2018)
Catalogs:
References: Published in Meteoritical Bulletin, no. 112, in preparation (2023)
Find references in NASA ADS:
Find references in Google Scholar:
Geography: 
Coordinates:Unknown.

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

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