Meteoritical Bulletin: Entry for Northwest Africa 13704

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Northwest Africa 13704

Basic information

Name: Northwest Africa 13704
This is an OFFICIAL meteorite name.
Abbreviation: NWA 13704
Observed fall: No
Year found: 2020
Country: (Northwest Africa)
Mass: 17 g

Classification
history:

Recommended:

Martian (shergottite) [explanation]

This is 1 of 300 approved meteorites (plus 2 unapproved names) classified as Martian (shergottite). [show all]
Search for other: Martian meteorites

Comments:

Approved 8 Apr 2021

Writeup

Writeup from MB 110:

Northwest Africa 13704 (NWA 13704)

(Northwest Africa)

Find: 2020

Classification: Martian meteorite (Shergottite)

History: Purchased from a dealer in Morocco

Physical characteristics: Grey fragments without crust

Petrography: (J. Gatacceca, CEREGE) Igneous rock with intersertal texture. Main minerals are zoned Ca-pyroxene and maskelynite with grain size ~500 µm. Pyrrhotite and exsolved Fe-Ti oxides (to 500 µm) are present.

Geochemistry: Ca-pyroxene range from Fs_19.8Wo_38.0to Fs_57.7Wo_13.9, FeO/MnO = 34.6±5.6 (n=4). Maskelynite An_44.4Ab_53.1Or_2.6(n=2).

Classification: Martian meteorite (shergottite)

Specimens: Type specimen at CEREGE. Main mass with Isabelle Pothier.

Data from:
  MB110
  Table 0
  Line 0:

Place of purchase:	Morocco
Date:	2020
Mass (g):	17
Pieces:	many
Class:	Martian (shergottite)
Weathering grade:	low
Magnetic suscept.:	3.16
Classifier:	J. Gattacceca, CEREGE
Type spec mass (g):	3.4
Type spec location:	CEREGE
Main mass:	Isabelle Pothier
Finder:	anonymous
Comments:	work name CM61; 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)

Catalogs:

References:

Published in Gattacceca J., McCubbin F.M., Grossman J., Bouvier A., Chabot N.L., D'Orazio M., Goodrich C., Greshake A., Gross J., Komatsu M., Miao B., and Schrader D. (2022) The Meteoritical Bulletin, No. 110. Meteorit. Planet. Sci. 1-4

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Geography:

Coordinates:

Unknown.

Statistics:
This is 1 of 9344 approved meteorites from (Northwest Africa) (plus 1872 unapproved names)

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