Meteoritical Bulletin: Entry for Northwest Africa 14864

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Northwest Africa 14864

Basic information

Name: Northwest Africa 14864
This is an OFFICIAL meteorite name.
Abbreviation: NWA 14864
Observed fall: No
Year found: 2022
Country: (Northwest Africa)
Mass: 111 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 9 May 2022

Writeup

Writeup from MB 111:

Northwest Africa 14864 (NWA 14864)

(Northwest Africa)

Purchased: 2022 Jan

Classification: HED achondrite (Eucrite)

History: The meteorite was purchased from a meteorite dealer in Talsint, Morocco.

Physical characteristics: Light grayish sand-coloured fragment with some fusion crust.

Petrography: The meteorite is a fragmental breccia composed up to 1 cm basaltic clasts with intersertal texture plus mineral fragments set in a fine-grained clastic matrix. Dominant mineral phases are up to 1 mm sized exsolved pyroxene and calcic plagioclase grains. Minor phases include silica, chromite, and troilite. No metallic iron was detected.

Geochemistry: low-Ca pyroxene: Fs_50.8±0.5Wo_2.2±0.2(Fs_50.1-51.4Wo_1.8-2.5, FeO/MnO=24-27, n=5); augite exsolution lamellae: Fs_23.4±0.2Wo_41.5±0.4(Fs_22.8-23.7Wo_41.0-42.3, FeO/MnO=22-25, n=5); calcic plagioclase: An_91.9±0.7(An_90.9-92.8, n=5)

Data from:
  MB111
  Table 0
  Line 0:

Place of purchase:	Talsint, Morocco
Date:	P 2022 Jan
Mass (g):	111
Pieces:	1
Class:	Eucrite
Shock stage:	low
Weathering grade:	moderate
Ferrosilite (mol%):	50.8; 23.4
Wollastonite (mol%):	2.2; 41.5
Classifier:	A. Greshake, MNB
Type spec mass (g):	30.3
Type spec location:	MNB
Main mass:	Noreddine Azelmat
Comments:	Submitted by Ansgar Greshake

Institutions
and collections

MNB: Museum für Naturkunde, Invalidenstraße 43, D-10115 Berlin, Germany (institutional address; updated 24 Dec 2011)

Catalogs:

References:

Published in Meteoritical Bulletin, no. 111, in preparation (2022)

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Geography:

Coordinates:

Unknown.

Statistics:
This is 1 of 8420 approved meteorites from (Northwest Africa) (plus 1900 unapproved names)

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