Meteoritical Bulletin: Entry for Northwest Africa 1980

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Northwest Africa 1980

Basic information

Name: Northwest Africa 1980
This is an OFFICIAL meteorite name.
Abbreviation: NWA 1980
Observed fall: No
Year found: 2002
Country: (Northwest Africa)
Mass: 546 g

Classification
history:

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

This is 1 of 252 approved meteorites classified as Eucrite-mmict. [show all]
Search for other: Achondrites, Eucrites, and HED achondrites

Writeup

Writeup from MB 88:

Northwest Africa 1980

Morocco

Found 2002

Achondrite (eucrite)

A 546 g fully crusted stone was purchased in Erfoud in 2002. Classification and mineralogy (T. Bunch and J. Wittke, NAU): monomict, cumulate eucrite breccia; clast size, millimeters to 6 cm; cataclastic, microgranular veining with minor recrystallization. Inverted pigeonite (Fs₄₈Wo_2.5); augite lamellae (Fs₁₅Wo₄₆); plagioclase (An₉₃); sulfide, ilmenite, chromite (Cr/Cr + Al = 65), and metal (Ni = 7.1 wt %). Shock level, S3/4; reduced birefringence, mosaicness, and deformation lamellae in pyroxenes; minor development of maskelynite. Very fresh, shiny black fusion crust and un-oxidized metal; minor terrestrial carbonate alteration veins. Specimens: 23 g, NAU; main mass, Boswell.

Data from:
  MB88
  Table 4
  Line 109:

Place of purchase:	Erfoud
Date:	2002
Mass (g):	546
Pieces:	1
Class:	Eucrite
Type spec mass (g):	21.3

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. 88, MAPS 39, A215-A272 (2004)

Find references in NASA ADS:
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Photos:

Credit	Photos
Photos uploaded by members of the Encyclopedia of Meteorites. (Caution, these are of unknown reliability)
Andreas Grünemeyer
Auricular

Geography:

Coordinates:

Unknown.

Statistics:
This is 1 of 7820 approved meteorites from (Northwest Africa) (plus 1971 unapproved names)

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