Meteoritical Bulletin: Entry for Northwest Africa 3109

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Northwest Africa 3109

Basic information

Name: Northwest Africa 3109
This is an OFFICIAL meteorite name.
Abbreviation: NWA 3109
Observed fall: No
Year found: 2003
Country: Morocco
Mass: 32 g

Classification
history:

Meteoritical Bulletin:	MB 89	(2005)	Ureilite
MetBase:	v. 7.1	(2006)	Ureilite
Recommended:			Ureilite [explanation]

This is 1 of 660 approved meteorites classified as Ureilite. [show all]
Search for other: Achondrites, Ureilites

Writeup

Writeup from MB online:

Northwest Africa 3109

Northwest Africa

Found 2003

Achondrite (ureilite)

A 32 g partial stone was purchased in Erfoud, Morocco in 2003. Description and classification (J. Wittke and T. Bunch, NAU): non-foliated ureilite with thin, reduced rims in olivine and sparse, interstitial masses of carbonaceous – reduced metal; prominent interstitial clusters of ribbon-like graphite; Cr₂O₃ enrichment in silicates. Olivine cores, Fa_23.3 with 0.63 wt. % Cr₂O₃, rims, Fa_7.6 and 0.15 wt. % Cr₂O₃. Pigeonite, Fs_17.8Wo_3.3 (Cr₂O₃ = 1.10 wt. %). Presence of (Fe,Cr)₃C in interstitial carbonaceous masses (Fe = 78.8 wt. %, Cr = 13.5 wt. %; Ni = 0.52 wt. %; Co = 0.32 wt. % and C = 6.9 wt. % by difference) and an SiO₂ phase. Shock level is S2; lightly weathered. Specimens: 6.5 g, NAU; main mass, Boswell.

Data from:
  MB89
  Table 7
  Line 450:

Origin or pseudonym:	Morocco
Place of purchase:	Erfoud
Date:	2003
Mass (g):	32
Pieces:	1
Class:	Ure
Shock stage:	S2
Fayalite (mol%):	23.3-7.6
Type spec mass (g):	6.5
Comments:	Pig Fs17.8Wo3.3; Undefined note. NAU is Northern Arizona University, Flagstaff, AZ 86011, USA

Institutions
and collections

NAU: Geology, Bldg 12 Knoles Dr Northern Arizona University, Flagstaff, AZ 86011, United States; Website (institutional address; updated 12 Apr 2012)

Catalogs:

References:

Published in Meteoritical Bulletin, no. 89, MAPS 40, A201-A263 (2005)

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Geography:

Morocco

Coordinates:

Unknown.

Statistics:
This is 1 of 2082 approved meteorites from Morocco (plus 31 unapproved names) (plus 1 impact crater)

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Revision
history:

This lists important revisions made to data for this record.

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