Meteoritical Bulletin: Entry for Northwest Africa 10864

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Northwest Africa 10864

Basic information

Name: Northwest Africa 10864
This is an OFFICIAL meteorite name.
Abbreviation: NWA 10864
Observed fall: No
Year found: 2015
Country: (Northwest Africa)
Mass: 303 g

Classification
history:

Meteoritical Bulletin:	MB 105	(2016)	Lodranite
Recommended:			Lodranite [explanation]

This is 1 of 93 approved meteorites classified as Lodranite. [show all]
Search for other: Acapulcoite-lodranite family, Lodranites, and Primitive achondrites

Comments:

Approved 22 Oct 2016

Writeup

Writeup from MB 105:

Northwest Africa 10864 (NWA 10864)

(Northwest Africa)

Purchased: 2015

Classification: Primitive achondrite (Lodranite)

History: The meteorite was bought in 2015 from a local meteorite dealer in Morocco.

Physical characteristics: The individuals lack any fusion crust and display a light to dark brownish-orange interior.

Petrography: The meteorite is a breccia dominantly composed of up to 2 mm sized angular olivine, orthopyroxene and clinopyroxene grains. Clinopyroxene often shows a greenish colour. Other phases include FeNi metal and chromite.

Geochemistry: olivine: Fa_11.4±0.1(Fa_11.2-11.6, n=23, FeO/MnO=24-30); low-Ca pyroxene: Fs_10.4±0.1Wo_3.7±0.4(Fs_10.2-10.5Wo_2.9-4.2, n=17, FeO/MnO=13-17); Ca-pyroxene: Fs_4.7±0.4Wo_43.4±1.1(Fs_4.3-5.7Wo_39.5-44.7, n=20, FeO/MnO=9-13)

Classification: Lodranite breccia. Likely paired with NWA 8118, NWA 8216 and NWA 8251.

Data from:
  MB105
  Table 0
  Line 0:

Place of purchase:	Morocco
Date:	P 2015
Mass (g):	303
Pieces:	2
Class:	Lodranite
Shock stage:	moderate
Weathering grade:	moderate
Fayalite (mol%):	11.4
Ferrosilite (mol%):	10.4; 3.7
Wollastonite (mol%):	4.7; 43.4
Classifier:	A. Greshake, MNB
Type spec mass (g):	20.2
Type spec location:	MNB
Main mass:	Jarkko Kettunen
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. 105, MAPS 52, 2411, September 2017. http://onlinelibrary.wiley.com/doi/10.1111/maps.12944/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:

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