Meteoritical Bulletin: Entry for Pecora Escarpment 02050

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Pecora Escarpment 02050

Basic information

Name: Pecora Escarpment 02050
This is an OFFICIAL meteorite name.
Abbreviation: PCA 02050
Observed fall: No
Year found: 2002
Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)]
Mass: 9.8 g

Classification
history:

Antarctic Meteorite Newsletter:	AMN 27(3)	(2004)	CM2
Meteoritical Bulletin:	MB 89	(2005)	CM2
MetBase:	v. 7.1	(2006)	CM2
Recommended:			CM2 [explanation]

This is 1 of 636 approved meteorites classified as CM2. [show all]
Search for other: Carbonaceous chondrites, Carbonaceous chondrites (type 2), CM chondrites, and CM-CO clan chondrites

Writeup

Writeup from AMN 27(3):

Sample No.:	PCA 02050
Location:	Pecora Escarpment
Field No.:	13633
Dimensions (cm):	3.0x1.5x1.5
Weight (g):	9.784
Meteorite Type:	CM2 Chondrite

Macroscopic Description: Kathleen McBride
Thick, ropey, black fusion crust covers the surface of this carbonaceous chondrite. The black matrix has mm sized light colored chondrules.

Thin Section (,2) Description: Tim McCoy, Cari Corrigan

Plane-Polarized Light

The section consists 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_0-40, with a peak at Fa_0-2. The matrix consists dominantly of an Fe-rich serpentine; chondrules are relatively unaltered. The meteorite is a CM2 chondrite and pairing with PCA 02011/02012 is likely.

Data from:
  MB89
  Table A1
  Line 714:

Origin or pseudonym:	North 40
Mass (g):	9.78
Class:	CM2
Weathering grade:	B
Fayalite (mol%):	0-40
Comments:	02011 pairing group

Catalogs:

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References:

Published in Antarctic Meteorite Newsletter 27(3) (2004), JSC, Houston
Published in Meteoritical Bulletin, no. 89, MAPS 40, A201-A263 (2005)

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Photos:

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

Geography:

Antarctica

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

Statistics:
This is 1 of 44543 approved meteorites from Antarctica (plus 3802 unapproved names)

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