Meteoritical Bulletin: Entry for Northwest Africa 14414

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Northwest Africa 14414

Basic information

Name: Northwest Africa 14414
This is an OFFICIAL meteorite name.
Abbreviation: NWA 14414
Observed fall: No
Year found: 2020
Country: (Northwest Africa)
Mass: 1035 g

Classification
history:

Meteoritical Bulletin:	MB 110	(2022)	Howardite
Recommended:			Howardite [explanation]

This is 1 of 451 approved meteorites classified as Howardite. [show all]
Search for other: Achondrites, HED achondrites, and Howardites

Comments:

Approved 20 Dec 2021

Writeup

help

Writeup from MB 110:

Northwest Africa 14414 (NWA 14414)

(Northwest Africa)

Purchased: 2020

Classification: HED achondrite (Howardite)

History: The meteorite was purchased from a dealer in Algeria.

Physical characteristics: More then 30 grayish fragments some of which partly covered with fusion crust.

Petrography: The meteorite is a polymict breccia composed of fine- and coarse-grained basaltic, gabbroic, and dark melt rock clasts up to 3 cm in size and mineral fragments (including blocky orthopyroxene crystals of diogenitic composition) set into a more fine-grained clastic and related matrix. Main minerals are up to 800 µm sized exsolved pyroxene, diogenetic orthopyroxene (about 20%), ferroan unexsolved low-Ca pyroxene, and calcic plagioclase. Minor phases include silica, chromite, ilmenite, and FeS. No metallic iron has been detected.

Geochemistry: low-Ca pyroxene: Fs_63.9±0.3Wo_1.9±0.2(Fs_63.6-64.5Wo_1.6-2.2, n=10, FeO/MnO=29-32); augite exsolution lamellae: Fs_27.9±1.5Wo_43.4±0.3(Fs_25.5-29.4Wo_43.0-44.1, n=11, FeO/MnO=29-37); diogenetic pyroxene: Fs_31.2±0.2Wo_3.6±0.5(Fs_30.9-31.5Wo_3.0-4.4, n=10, FeO/MnO=28-33); ferroan unexsolved low-Ca-pyroxene: Fs_45.1±0.4Wo_1.7±0.1(Fs_44.7-45.8Wo_1.6-1.8, n=7, FeO/MnO=32-35); calcic plagioclase: An_91.5±0.9(An_90.3-93.0, n=12)

Data from:
  MB110
  Table 0
  Line 0:

Place of purchase:	Algeria
Date:	P 2020
Mass (g):	1035
Pieces:	>30
Class:	Howardite
Shock stage:	moderate
Weathering grade:	low
Ferrosilite (mol%):	63.9; 27.9; 31.2; 45.1
Wollastonite (mol%):	1.9; 43.4; 3.6; 1.7
Classifier:	A. Greshake, MNB
Type spec mass (g):	22.9
Type spec location:	MNB
Main mass:	Mateusz Szyszka
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 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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Photos:

Credit	Photos
Photos uploaded by members of the Encyclopedia of Meteorites. (Caution, these are of unknown reliability)
MS
Predrag Radovic
Robert Smart
Ryan Upchurch

Geography:

Coordinates:

Unknown.

Statistics:
This is 1 of 9710 approved meteorites from (Northwest Africa) (plus 1853 unapproved names)

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Revision
history:

This lists important revisions made to data for this record.

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