Meteoritical Bulletin: Entry for Northwest Africa 10415

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Northwest Africa 10415

Basic information

Name: Northwest Africa 10415
This is an OFFICIAL meteorite name.
Abbreviation: NWA 10415
Observed fall: No
Year found: 2015
Country: (Northwest Africa)
Mass: 164 g

Classification
history:

Meteoritical Bulletin:	MB 104	(2015)	Lunar (feldsp. breccia)
Recommended:			Lunar (feldsp. breccia) [explanation]

This is 1 of 336 approved meteorites classified as Lunar (feldsp. breccia). [show all]
Search for other: Lunar meteorites

Comments:

Approved 24 Nov 2015

Writeup

help

Writeup from MB 104:

Northwest Africa 10415 (NWA 10415)

(Northwest Africa)

Purchased: 2015

Classification: Lunar meteorite (feldspathic breccia)

History: Aras Jonikas purchased three stones from a Moroccan dealer in Guelmim, in August 2015.

Physical characteristics: Three identical appearing stones, 144, 15, and 5 g, with eathered exteriors. A saw cut reveals prominent light-colored feldspathic clasts, also numerous dark-gray clasts, and some shock melt veins and vesicles.

Petrography: (C. Agee, UNM) This is a fragmental, cataclastic, shock-melted lunar meteorite. Numerous feldspar grains and scattered olivines and pyroxenes are present throughout. There are shock melt domains present with vesicles. Accessory troilite, chromite, and Fe-oxides were observed.

Geochemistry: (C. Agee and N. Muttik, UNM) olivine Fa_39.1±0.3, Fe/Mn=104±8, n=2; pigeonite Fs_43.0±1.8Wo_8.9±0.8, Fe/Mn=60±5, n=2; augite Fs_33.3±12.7Wo_35.0±6.5, Fe/Mn=64±5, n=2 plagioclase An_96.8±0.3, n=2; Shock melt (20 μm defocused electron beam, proxy for bulk meteorite composition): SiO₂=46.2±1.2, TiO₂=0.17±0.13, Al₂O₃=31.6±4.4, Cr₂O₃=0.06±0.05, MgO=3.2±2.4, FeO=3.2±2.3, MnO=0.05±0.04, CaO=17.6±1.8, NiO=0.02±0.02, Na₂O=0.34±0.03, K₂O=0.10±0.04 (all wt%), MgO+FeO=6.5±4.7 (wt%), n=5.

Classification: Lunar (feldspathic breccia), high alumina.

Specimens: 20.2 g including a probe mount on deposit at UNM, Aras Jonikas holds the main mass.

Data from:
  MB104
  Table 0
  Line 0:

Place of purchase:	Morocco
Date:	P 2015
Mass (g):	164
Pieces:	3
Class:	Lunar (feldsp. breccia)
Shock stage:	high
Weathering grade:	moderate
Fayalite (mol%):	39.1±0.3
Ferrosilite (mol%):	43.0±1.8
Wollastonite (mol%):	8.9±0.8
Classifier:	C. Agee, UNM
Type spec mass (g):	20.2
Type spec location:	UNM
Main mass:	Aras Jonikas
Comments:	Submitted by C. Agee

Institutions
and collections

UNM: Institute of Meteoritics MSC03 2050 University of New Mexico Albuquerque NM 87131-1126 USA, United States; Website (institutional address; updated 12 Feb 2015)

Catalogs:

References:

Published in Meteoritical Bulletin, no. 104, MAPS 52, 2284, Octover 2017, http://onlinelibrary.wiley.com/doi/10.1111/maps.12930/full

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Geography:

Coordinates:

Unknown.

Statistics:
This is 1 of 9699 approved meteorites from (Northwest Africa) (plus 1854 unapproved names)

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Revision
history:

This lists important revisions made to data for this record.

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