Meteoritical Bulletin: Entry for Northwest Africa 11749

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Northwest Africa 11749

Basic information

Name: Northwest Africa 11749
This is an OFFICIAL meteorite name.
Abbreviation: NWA 11749
Observed fall: No
Year found: 2016
Country: Morocco
Mass: 460 g

Classification
history:

Meteoritical Bulletin:	MB 107	(2018)	Eucrite-unbr
Recommended:			Eucrite-unbr [explanation]

This is 1 of 104 approved meteorites classified as Eucrite-unbr. [show all]
Search for other: Achondrites, Eucrites, and HED achondrites

Comments:

Approved 19 Apr 2018

Writeup

Writeup from MB 107:

Northwest Africa 11749 (NWA 11749)

Morocco

Purchased: 2016 Oct

Classification: HED achondrite (Eucrite, unbrecciated)

History: Bought in Munich from a dealer from NWA.

Physical characteristics: Crusted stone. Cut surface reveals a rather orase-grained light grey rock.

Petrography: Unbrecciated igneous rock with subophitic texture and typical grain size 500 μm. Main minerals are pyroxene and plagioclase. Troilite (to 40 μm), chromite, ilmenite, silica polymorph, FeNi metal are present.

Geochemistry: Low-Ca pyroxene Fs_63.0±0.3Wo_2.2±0.4(N=6), augite exsolution Fs_26.4Wo_45.0(N=2), FeO/MnO 31.1±1.7 (N=8). Plagioclase An_88.6Ab_11.1Or_0.3(N=3).

Classification: Eucrite-unbr

Specimens: Type specimen at CEREGE. Main mass with Andreas Gren.

Data from:
  MB107
  Table 0
  Line 0:

Place of purchase:	Munich
Date:	P 2016 Oct
Mass (g):	460
Pieces:	3
Class:	Eucrite-unbr
Weathering grade:	minimal
Ferrosilite (mol%):	63.0±0.3 (N=6)
Wollastonite (mol%):	2.2±0.4
Magnetic suscept.:	2.64
Classifier:	J. Gattacceca, CEREGE
Type spec mass (g):	23.9
Type spec location:	CEREGE
Main mass:	Andreas Gren
Comments:	work name AG001; submitted by Jerome Gattacccea

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)
Gren: Andreas Gren, Hamburg, Germany (private address)

Catalogs:

References:

Published in Meteoritical Bulletin, no. 107, MAPS 55, 460-462

Find references in NASA ADS:
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Geography:

Morocco

Coordinates:

Unknown.

Statistics:
This is 1 of 1611 approved meteorites from Morocco (plus 22 unapproved names) (plus 1 impact crater)

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