Meteoritical Bulletin: Entry for Northwest Africa 1926

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Northwest Africa 1926

Basic information

Name: Northwest Africa 1926
This is an OFFICIAL meteorite name.
Abbreviation: NWA 1926
Observed fall: No
Year found: 2003
Country: (Northwest Africa)
Mass: 37 g

Classification
history:

Meteoritical Bulletin:	MB 88	(2004)	Ureilite-pmict
MetBase:	v. 7.1	(2006)	Ureilite-pmict
Recommended:			Ureilite-pmict [explanation]

This is 1 of 32 approved meteorites classified as Ureilite-pmict. [show all]
Search for other: Achondrites, Ureilites

Writeup

Writeup from MB 88:

Northwest Africa 1926

Morocco

Found 2003

Achondrite (ureilite, polymict)

A 36.8 g partial stone was purchased in Rissani June 2003. Classification and mineralogy (J. Wittke and T. Bunch, NAU): fragmental breccia with clasts of a poikilitic ureilite embedded in typical ureilite material that consists of olivine with homogeneous cores (Fa₃₁) and reduced rims (Fa_2-7) and pyroxenes with Fs_19.7Wo_4.5in cores and Fs_9.5Wo₁at rims. Heavy concentration of carbonaceous matter; unoxidized metal, Ni = 2.95 wt %. Clasts are composed of large pyroxenes (Fs_19.1Wo_4.0) that poikilitically enclose homogeneous olivine (Fa_21.8). Clast ureilite contains very little carbonaceous matter in contrast to the host ureilite. Shock level, S2; low degree of weathering. Specimens: type specimen, 6.3 g, NAU; main mass, MFarmer.

Data from:
  MB88
  Table 4
  Line 83:

Place of purchase:	Rissani
Date:	P Jun 2003
Mass (g):	37
Pieces:	1
Class:	Ure pm
Classifier:	T. Bunch and J. Wittke, NAU
Type spec mass (g):	6.3
Type spec location:	ASU
Main mass:	MFarmer

Institutions
and collections

ASU: Center for Meteorite Studies, Arizona State University, Tempe, Arizona 85287-1404, United States; Website (institutional address; updated 14 Jan 2012)
NAU: Geology, Bldg 12 Knoles Dr Northern Arizona University, Flagstaff, AZ 86011, United States; Website (institutional address; updated 12 Apr 2012)
MFarmer: Michael Farmer, P.O. Box 86059, Tucson, AZ 85754-6059, United States; Website (private address)

Catalogs:

References:

Published in Meteoritical Bulletin, no. 88, MAPS 39, A215-A272 (2004)

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Photos:

Credit	Photos
Photos from the Encyclopedia of Meteorites:
Michael Cottingham

Geography:

Coordinates:

Unknown.

Statistics:
This is 1 of 9111 approved meteorites from (Northwest Africa) (plus 1873 unapproved names)

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