Meteoritical Bulletin: Entry for Northwest Africa 11048

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Northwest Africa 11048

Basic information

Name: Northwest Africa 11048
This is an OFFICIAL meteorite name.
Abbreviation: NWA 11048
Observed fall: No
Year found: 2005
Country: (Northwest Africa)
Mass: 32 g

Classification
history:

Meteoritical Bulletin:	MB 106	(2018)	Acapulcoite
Recommended:			Acapulcoite [explanation]

This is 1 of 91 approved meteorites classified as Acapulcoite. [show all]
Search for other: Acapulcoite-lodranite family, Acapulcoites, and Primitive achondrites

Comments:

Approved 7 Feb 2017

Writeup

help

Writeup from MB 106:

Northwest Africa 11048 (NWA 11048)

(Northwest Africa)

Purchased: 2005 Jun

Classification: Primitive achondrite (Acapulcoite)

History: Purchased from a Moroccan dealer at the mineral show in Sainte-Marie-aux-Mines, France.

Petrography: (K. Metzler, IfP) Recrystallized rock with abundant 120° triple junctions, consisting of low-Ca pyroxene, olivine, Ca-rich pyroxene, troilite, metallic Fe,Ni and plagioclase. Accessory phases are chromite and phosphates. Grain sizes of silicates mostly below 0.5 mm with some metal grains up to 1 mm.

Geochemistry: Mineral compositions and geochemistry: Olivine Fa_10.8±0.2(Fa_10.6-11.1); n=8. Low-Ca pyroxene Fs_10.4±0.1Wo_1.9±0.6(Fs_10.3-10.6Wo_1.1-2.8, n=8). Ca-rich pyroxene Fs_4.6±0.4Wo_43.2±1.2(Fs_3.9-5.1Wo_41.4-45.0, n=9). Cr₂O₃ in Ca pyroxene 1.5 wt%. Plagioclase An_16.8±0.7Or_3.0±0.4(An_15.1-17.4Or_2.3-3.6, n=8).

Classification: Acapulcoite, based on mineral chemistry and mean grain size of silicates.

Data from:
  MB106
  Table 0
  Line 0:

Place of purchase:	Sainte-Marie-aux-Mines, France
Date:	P 2005 Jun
Mass (g):	32
Pieces:	1
Class:	Acapulcoite
Shock stage:	low
Weathering grade:	moderate
Fayalite (mol%):	10.8
Ferrosilite (mol%):	10.4; 4.6
Wollastonite (mol%):	1.9; 43.2
Classifier:	K. Metzler, IfP
Type spec mass (g):	6.4
Type spec location:	IfP
Main mass:	anonymous
Comments:	Submitted by K. Metzler, IfP

Institutions
and collections

IfP: Institut für Planetologie, Wilhelm-Klemm-Str. 10, 48149 Münster, Germany (institutional address; updated 23 Jan 2012)

Catalogs:

References:

Published in Gattacceca J., Bouvier A., Grossman J., Metzler K., and Uehara M. (2019) Meteoritical Bulletin, no. 106. Meteorit. Planet. Sci. 54 in press.

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Geography:

Coordinates:

Unknown.

Statistics:
This is 1 of 9344 approved meteorites from (Northwest Africa) (plus 1872 unapproved names)

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