Meteoritical Bulletin: Entry for Northwest Africa 14252

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Northwest Africa 14252

Basic information

Name: Northwest Africa 14252
This is an OFFICIAL meteorite name.
Abbreviation: NWA 14252
Observed fall: No
Year found: 2019
Country: (Northwest Africa)
Mass: 240 g

Classification
history:

Recommended:

Eucrite [explanation]

This is 1 of 554 approved meteorites (plus 1 unapproved name) classified as Eucrite. [show all]
Search for other: Achondrites, Eucrites, and HED achondrites

Comments:

Approved 6 Oct 2021

Writeup

help

Writeup from MB 110:

Northwest Africa 14252 (NWA 14252)

(Northwest Africa)

Purchased: 2019 Sep

Classification: HED achondrite (Eucrite)

Physical characteristics: Single stone, lacking fusion crust

Petrography: (J. Gattacceca, CEREGE) Igneous rock with microgabbroic texture (grain size 150 µm). Main minerals are Ca-pyroxene and plagioclase. Pyroxene show both fine exsolution lamellae and zoning with Fe poor cores, sometimes in the same grain. Accessory minerals: ilmenite, chromite, primary baryte (with both euhedral and rounded shapes) set in plagioclase.

Geochemistry: Pyroxene Fs_41.6±4.8Wo_29.4±5.9, range Fs_36.8-48.0, FeO/MnO 32.8±1.9 (n=5), core Fs_36.0Wo_6.4(n=1). Plagioclase An_92.8±0.9Ab_7.1±0.8Or_0.1±0.1(n=3).

Classification: Achondrite (eucrite). The dominance of Ca-pyroxene over low-Ca pyroxene, the iron poor pyroxene cores and the abundance of euhedral baryte in plagioclase are unusual features.

Specimens: Type specimen at CEREGE. Main mass with Kuntz

Data from:
  MB110
  Table 0
  Line 0:

Place of purchase:	Guelmin, Morocco
Date:	P 2019 Sep
Mass (g):	240
Pieces:	1
Class:	Eucrite
Weathering grade:	low
Magnetic suscept.:	3.73
Classifier:	J. Gattacceca, CEREGE
Type spec mass (g):	21.8
Type spec location:	CEREGE
Main mass:	Kuntz
Finder:	anonymous
Comments:	work name K452; 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)
Kuntz: Fabien Kuntz, France; Website (private address)

Catalogs:

References:

Published in Meteoritical Bulletin, no. 110, in preparation (2021)

Find references in NASA ADS:
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Photos:

Credit	Photos
Public domain photographs:
Jerome Gattacceca

Geography:

Coordinates:

Unknown.

Statistics:
This is 1 of 8394 approved meteorites from (Northwest Africa) (plus 1899 unapproved names)

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