Meteoritical Bulletin: Entry for Northwest Africa 8660

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Northwest Africa 8660

Basic information

Name: Northwest Africa 8660
This is an OFFICIAL meteorite name.
Abbreviation: NWA 8660
Observed fall: No
Year found: 2012
Country: (Northwest Africa)
Mass: 629 g

Classification
history:

Meteoritical Bulletin:	MB 104	(2015)	Eucrite
Recommended:			Eucrite [explanation]

This is 1 of 587 approved meteorites (plus 1 unapproved name) classified as Eucrite. [show all]
Search for other: Achondrites, Eucrites, and HED achondrites

Comments:

Approved 18 Feb 2015

Writeup

Writeup from MB 104:

Northwest Africa 8660 (NWA 8660)

(Northwest Africa)

Purchased: Jan 2012

Classification: HED achondrite (Eucrite)

Petrography: (P. Warren, UCLA) This eucrite is mildly brecciated and essentially monomict. Clasts are subophitic with typical grain size of 0.5 mm. Minor Fe-metal.

Geochemistry: Low-Ca pyroxene En_37.4±0.9Wo_2.2±0.4, FeO/MnO wt. ratio 31.7±1.2, n=20; high-Ca pyroxene En_30.2±0.4Wo_43.8±0.3, n=11; plagioclase An_88.3±2.6, n=23.

Classification: Eucrite (monomict breccia).

Data from:
  MB104
  Table 0
  Line 0:

Place of purchase:	Morocco
Date:	P Jan 2012
Mass (g):	629
Pieces:	1
Class:	Eucrite
Shock stage:	moderate
Weathering grade:	moderate
Ferrosilite (mol%):	60.4
Wollastonite (mol%):	2.2
Classifier:	P. Warren, UCLA
Type spec mass (g):	50.2
Type spec location:	UCLA
Main mass:	Brad Sampson
Comments:	Submitted by P. Warren

Institutions
and collections

UCLA: Institute of Geophysics and Planetary Physics, University of California, Los Angeles, CA 90095-1567, United States (institutional address; updated 17 Oct 2011)

Catalogs:

References:

Published in Meteoritical Bulletin, no. 104, MAPS 52, 2284, Octover 2017, http://onlinelibrary.wiley.com/doi/10.1111/maps.12930/full

Find references in NASA ADS:
Find references in Google Scholar:

Photos:

Credit	Photos
Photos uploaded by members of the Encyclopedia of Meteorites. (Caution, these are of unknown reliability)
Brad Sampson

Geography:

Coordinates:

Unknown.

Statistics:
This is 1 of 9305 approved meteorites from (Northwest Africa) (plus 1873 unapproved names)

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