Meteoritical Bulletin: Entry for Pecora Escarpment 02008

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Pecora Escarpment 02008

Basic information

Name: Pecora Escarpment 02008
This is an OFFICIAL meteorite name.
Abbreviation: PCA 02008
Observed fall: No
Year found: 2002
Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)]
Mass: 19.1 g

Classification
history:

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

This is 1 of 522 approved meteorites classified as Diogenite. [show all]
Search for other: Achondrites, Diogenites, and HED achondrites

Writeup

Writeup from AMN 27(1):

Sample No.:	PCA 02008; PCA 02017
Location:	Pecora Escarpment
Field No.:	13678; 13650
Dimensions (cm):	3.0x2.0x2.0 2.0x1.5x0.5
Weight (g):	19.097; 2.352
Meteorite Type:	Diogenite

Macroscopic Description: Kathleen McBride
The exteriors of these diogenites have smooth, shiny black fusion crust. The interiors are fine-grained, medium gray matrix with light gray and cream colored inclusions.

Thin Section (,2) Description: Tim McCoy, Linda Welzenbach
These sections show a groundmass of coarse (up to 2 mm) comminuted pyroxene with minor SiO₂, olivine (Fa_25-29) and plagioclase (An₉₀). Orthopyroxene has a composition of Fs_17-26Wo_2-3 and an Fe/Mn ratio of ~28-30. The meteorites are diogenites and are probably paired.


PCA 02008 Cross-Polarized Light	PCA 02008 Plane-Polarized Light	PCA 02017 Cross-Polarized Light	PCA 02017 Plane-Polarized Light

Data from:
  MB88
  Table A1
  Line 695:

Mass (g):	19.097
Class:	Diog
Weathering grade:	B
Ferrosilite (mol%):	23-26

Catalogs:

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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

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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