Meteoritical Bulletin: Entry for Northwest Africa 11895

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Northwest Africa 11895

Basic information

Name: Northwest Africa 11895
This is an OFFICIAL meteorite name.
Abbreviation: NWA 11895
Observed fall: No
Year found: 1998
Country: (Sahara)
Mass: 148 g

Classification
history:

Meteoritical Bulletin:	MB 107	(2018)	H3-5
Recommended:			H3-5 [explanation]

This is 1 of 86 approved meteorites classified as H3-5. [show all]
Search for other: H chondrites, H chondrites (type 3), Ordinary chondrites, and Ordinary chondrites (type 3)

Comments:

Approved 20 Jul 2018

Writeup

Writeup from MB 107:

Northwest Africa 11895 (NWA 11895)

Sahara

Find: 1998

Classification: Ordinary chondrite (H3-5)

History: Sample was found 1998 by the Labenne group. The coordinates are unknown.

Petrography: The sample is a breccia and contains fragments of different petrologic type, most fragments are recrystallized (type 5) and some are unequilibrated.

Geochemistry: Olivine compositions are Fa_14.2-21.0(mean Fa_17.6±2.5, n=9), pyroxene compositions are Fs_8.2-20.4Wo_0.8-2.6(mean Fs_15.7±3.4Wo_1.4±0.5, n=11). The equilibrated clasts have olivine compositions of Fa_19.2±0.2(n=3) and pyroxene compositions of Fs_16.9±0.3Wo_1.3±0.2(n=3).

Classification: Brecciated H chondrite (H3-5) based on mineral compositions and chondrule size. Very weakly shocked (S2), weathering degree: W2

Data from:
  MB107
  Table 0
  Line 0:

Origin or pseudonym:	Desert
Date:	1998
Mass (g):	148
Pieces:	1
Class:	H3-5
Shock stage:	S2
Weathering grade:	W2
Fayalite (mol%):	17.6±2.5 (n=9)
Ferrosilite (mol%):	15.7±3.4 (n=11)
Wollastonite (mol%):	1.4±0.5 (n=11)
Classifier:	K. Klemm, A. Bischoff, IfP
Type spec mass (g):	18.9
Type spec location:	IfP
Main mass:	unknown
Comments:	work name Sahara 98050A; submitted by Ebert S.

Institutions
and collections

IfP: Institut für Planetologie, Wilhelm-Klemm-Str. 10, 48149 Münster, Germany (institutional address; updated 23 Jan 2012)
Labenne: 23, rue de Esperance, 75013 Paris, France; Website (private address; updated 29 Aug 2012)

Catalogs:

References:

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

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Geography:

Coordinates:

Unknown.

Statistics:
This is 1 of 1037 approved meteorites from (Sahara) (plus 1 unapproved name)

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Revision
history:

This lists important revisions made to data for this record.

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