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Northwest Africa 15750
Basic information Name: Northwest Africa 15750
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 15750
Observed fall: No
Year found: 2020
Country: (Northwest Africa)
Mass:help 515 g
Classification
  history:
Recommended:  R4    [explanation]

This is 1 of 67 approved meteorites classified as R4.   [show all]
Search for other: Rumuruti chondrites, Rumuruti chondrites (type 4-7)
Comments: Approved 4 Mar 2023
Writeuphelp
Writeup from MB 112:

Northwest Africa 15750 (NWA 15750)

(Northwest Africa)

Purchased: 2020 Jan

Classification: Rumuruti chondrite (R4)

Physical characteristics: Dark fragments. Cut surface reveals a gray interior with small chondrules and abundant matrix.

Petrography: (J. Gattacceca, CEREGE) Chondrite with abundant recrystallized matrix containing plagioclase with typical size 20 µm. Opaque minerals are pyrrhotite and pentlandite mostly as rounded aggregates to 500 µm in the matrix, and magnetite.

Geochemistry: Olivine Fa40.7±0.3, NiO 0.27±0.02 wt% (n=3). Pyroxene Fs13.9Wo0.3, Fs25.1Wo0.3 (n=2)

Classification: Rumuruti chondrite (R4). Type 4 based on the unequilibrated pyroxene, despite the presence of plagioclase in the matrix

Specimens: Type specimen at CEREGE, main mass with Chalom Malka, 55 g with José Garcia

Data from:
  MB112
  Table 0
  Line 0:
Place of purchase:Boujdour, Western Sahara
Date:P 2020 Jan
Mass (g):515
Pieces:25
Class:R4
Weathering grade:low
Fayalite (mol%):40.7±0.3 (n=3)
Ferrosilite (mol%):19.5 (n=2)
Wollastonite (mol%):0.29
Magnetic suscept.:3.08
Classifier:J. Gattacceca, CEREGE
Type spec mass (g):20.84
Type spec location:CEREGE
Main mass:Chalom Malka
Finder:anonymous
Comments:work name CA41; 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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