Meteoritical Bulletin: Entry for Pecora Escarpment 02011

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Pecora Escarpment 02011

Basic information

Name: Pecora Escarpment 02011
This is an OFFICIAL meteorite name.
Abbreviation: PCA 02011
Observed fall: No
Year found: 2002
Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)]
Mass: 2.6 g

Classification
history:

Antarctic Meteorite Newsletter:	AMN 27(1)	(2004)	CM2
Meteoritical Bulletin:	MB 88	(2004)	CM2
MetBase:	v. 7.1	(2006)	CM2
Recommended:			CM2 [explanation]

This is 1 of 622 approved meteorites classified as CM2. [show all]
Search for other: Carbonaceous chondrites, Carbonaceous chondrites (type 2), CM chondrites, and CM-CO clan chondrites

Writeup

help

Writeup from AMN 27(1):

Sample No.:	PCA 02011; PCA 02012
Location:	Pecora Escarpment
Field No.:	13616; 13657
Dimensions (cm):	2.5x1.25x0.5 4.0x3.5x3.0
Weight (g):	2.613; 58.922
Meteorite Type:	CM2 Chondrite

PCA02011

PCA02012

Macroscopic Description: Kathleen McBride
5-10% of the exteriors have a purplish black fusion crust with rough areas and a slight sheen. The interiors reveal a black charcoal-like, platy matrix, with tiny white and tan inclusions.

Thin Section (,2) Description: Linda Welzenbach, Tim McCoy
The sections consist of a few small chondrules (up to 1 mm), mineral grains and CAIs set in a black matrix; rare metal and sulfide grains are present. Olivine compositions are Fa_0-43, with a peak at Fa_0-2, orthopyroxene is Fs_0-5. The matrix consists dominantly of an Fe-rich serpentine; chondrules are relatively unaltered. The meteorites are CM2 chondrites and probably paired.


PCA 02011 Cross-Polarized Light	PCA 02011 Plane-Polarized Light	PCA 02012 Cross-Polarized Light	PCA 02012 Plane-Polarized Light

Data from:
  MB88
  Table A1
  Line 698:

Mass (g):	2.613
Class:	CM2
Weathering grade:	A/B
Fayalite (mol%):	1-43
Ferrosilite (mol%):	0-2

Catalogs:

Search for this meteorite in the NASA/JSC database (U.S.):

References:

Published in Antarctic Meteorite Newsletter 27(1) (2004), JSC, Houston
Published in Meteoritical Bulletin, no. 88, MAPS 39, A215-A272 (2004)

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Photos:

Credit	Photos
Photographs from AMN:
Photograph from unknown source	A photo is in the write-up above

Geography:

Antarctica

Antarctica

Coordinates:
Recommended::	(85° 38'S, 68° 42'W)

Statistics:
This is 1 of 43856 approved meteorites from Antarctica (plus 3802 unapproved names)

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