Meteoritical Bulletin: Entry for Northwest Africa 13505

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Northwest Africa 13505

Basic information

Name: Northwest Africa 13505
This is an OFFICIAL meteorite name.
Abbreviation: NWA 13505
Observed fall: No
Year found: 2019
Country: (Northwest Africa)
Mass: 92.8 g

Classification
history:

Meteoritical Bulletin:	MB 109	(2021)	CK5
Recommended:			CK5 [explanation]

This is 1 of 224 approved meteorites classified as CK5. [show all]
Search for other: Carbonaceous chondrites, Carbonaceous chondrites (equilibrated), CK chondrites, CK chondrites (type 4-6), and CV-CK clan chondrites

Comments:

Approved 14 Nov 2020

Writeup

Writeup from MB 109:

Northwest Africa 13505 (NWA 13505)

(Northwest Africa)

Purchased: 2019 Oct

Classification: Carbonaceous chondrite (CK5)

History: Bought from a dealer from northwest Africa.

Physical characteristics: Dark brown stone. Cut surface shows a dark interior with large chondrules set in abundant matrix.

Petrography: (J. Gattacceca, CEREGE) Chondrite with large chondrules (average apparent diameter 710±300, n=12) set in a recrystallized matrix with plagiocalse typical size 40 µm. The main opaque phases are Cr-rich magnetite and sulfides. Rare metal.

Geochemistry: Olivine Fa_31.2±0.2, NiO 0.48±0.08 wt% (n=6). Ca-pyroxene Fs_10.8Wo_48.5(n=1). Plagioclase An_43.6Ab_53.7Or_2.6(n=2). Magnetite has 3.76 wt% Cr₂O₃ (n=2).

Classification: Carbonaceous chondrite (CK5)

Specimens: Type specimen at CEREGE. Main mass with Kuntz.

Data from:
  MB109
  Table 0
  Line 0:

Place of purchase:	Munich, Germany
Date:	P 2019 Oct
Mass (g):	92.8
Pieces:	2
Class:	CK5
Weathering grade:	low
Fayalite (mol%):	31.2±0.2 (n=6)
Magnetic suscept.:	4.61
Classifier:	J. Gattacceca, CEREGE
Type spec mass (g):	20.2
Type spec location:	CEREGE
Main mass:	Kuntz
Comments:	work name K490; 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 10 Jun 2023)
Kuntz: Fabien Kuntz, France; Website (private address)

Catalogs:

References:

Published in Gattacceca J., McCubbin F. M., Grossman J., Bouvier A., Bullock E., Chennaoui Aoudjehane H., Debaille V., D’Orazio M., Komatsu M., Miao B. and Schrader D. L. (2021) The Meteoritical Bulletin, No. 109. Meteoritics & Planetary Science 56, 1626–1630.

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Geography:

Coordinates:

Unknown.

Statistics:
This is 1 of 9914 approved meteorites from (Northwest Africa) (plus 1841 unapproved names)

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