Meteoritical Bulletin: Entry for Northwest Africa 1569

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Northwest Africa 1569

Basic information

Name: Northwest Africa 1569
This is an OFFICIAL meteorite name.
Abbreviation: NWA 1569
Observed fall: No
Year found: 2001
Country: (Northwest Africa)
Mass: 614 g

Classification
history:

Meteoritical Bulletin:	MB 87	(2003)	Ureilite
MetBase:	v. 7.1	(2006)	Ureilite
Recommended:			Ureilite [explanation]

This is 1 of 630 approved meteorites classified as Ureilite. [show all]
Search for other: Achondrites, Ureilites

Writeup

Writeup from MB 87:

Northwest Africa 1569

Morocco

Found 2000

Achondrite (ureilite)

A 614 g partially crusted stone was purchased in Erfoud, Morocco in 2001. Classification and mineralogy (T. Bunch and J. Wittke, NAU): typical ureilite texture; olivine grain size up to 1.5 mm with triple junctions, poorly developed lineation, low-Ni metal (mostly oxidized) interstitial to olivine; low-Ca pyroxene is <1 mm and tends to occur in clusters with interstitial carbonaceous matter. Olivine cores are Fa18, dusty rims are reduced to Fs10; (Cr2O3 up to 0.62 wt%; CaO up to 0.41 wt%); low-Ca pyroxene is Fs18Wo8 to Fs23Wo9; metal, 0.47 to 5.3 wt% Ni, 0.55 wt% Cr2O3, 0.4 wt% P and 0.29 wt% Si; sulfides contain up to 1.4 wt% Cr. Shock level, S2; weathering grade, W1. Specimens: main mass with anonymous buyer; type specimen, 20.5 g, and thin section, NAU.

Data from:
  MB87
  Table 8
  Line 167:

Place of purchase:	Erfoud
Date:	P 2001
Mass (g):	614
Pieces:	1
Class:	Ure
Classifier:	T. Bunch and J. Wittke, NAU
Type spec mass (g):	20.4
Main mass:	purchaser

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. 87, MAPS 38, A189-A248 (2003)

Find references in NASA ADS:
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Geography:

Coordinates:

Unknown.

Statistics:
This is 1 of 9116 approved meteorites from (Northwest Africa) (plus 1873 unapproved names)

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