Meteoritical Bulletin: Entry for Northwest Africa 2794

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Northwest Africa 2794

Basic information

Name: Northwest Africa 2794
This is an OFFICIAL meteorite name.
Abbreviation: NWA 2794
Observed fall: No
Year found: 2005
Country: Morocco
Mass: 145 g

Classification
history:

Meteoritical Bulletin:	MB 90	(2006)	Howardite
Recommended:			Howardite [explanation]

This is 1 of 451 approved meteorites classified as Howardite. [show all]
Search for other: Achondrites, HED achondrites, and Howardites

Comments:

Approved 3 Feb 2006

Writeup

Writeup from MB 90:

Northwest Africa 2794

Morocco

Find: 2005

Achondrite (howardite)

History: A 145 g single stone with partial fusion crust was purchased in Erfoud, Morocco, in 2005.

Petrography: (J. Wittke and T. Bunch, NAU) Contains fine to medium cumulate basalt clast size (<3 mm diameter) and even finer-grained subophitic basalts (<1 mm) with diogenite fragments up to 8 mm.

Geochemistry: Cumulate basalt pyroxenes: Orthopyroxene (Fs_49.4–64.7Wo_2.1–2.5), exsolved pigeonite (Fs_45.1–54.4Wo_13.1–6.7), Ca pyroxene (Fs_36.0–47.1Wo_19.6–24.1). All pyroxene FeO/MnO = 29–34 (n = 27). Diogenite: Orthopyroxene (Fs_26.7–30Wo_2.2–
2.5; FeO/MnO = 24–30).

Classification: Achondrite (howardite); moderate weathering and low to moderate shock.

Specimens: A 21.4 g type specimen is on deposit at NAU. GHupé holds the main mass.

Data from:
  MB90
  Table 2
  Line 101:

Place of purchase:	Erfoud, Morocco
Date:	2005
Mass (g):	145
Pieces:	1
Class:	How
Shock stage:	low-medium
Weathering grade:	moderate
Type spec mass (g):	21.4

Institutions
and collections

NAU: Geology, Bldg 12 Knoles Dr Northern Arizona University, Flagstaff, AZ 86011, United States; Website (institutional address; updated 12 Apr 2012)
GHupé: Gregory M. Hupé, 9003 Placid Lakes Blvd., Lake Placid, FL 33852, United States; Website (private address)

Catalogs:

References:

Published in Meteoritical Bulletin, no. 90, MAPS 41, 1383-1418 (2006)

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Photos:

Credit	Photos
Photos from the Encyclopedia of Meteorites:
The Hupe Collection

Geography:

Morocco

Coordinates:

Unknown.

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

Also see:

This lists the most popular meteorites among people who looked up this meteorite.

Revision
history:

This lists important revisions made to data for this record.

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