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Pecora Escarpment 02007
Basic information Name: Pecora Escarpment 02007
     This is an OFFICIAL meteorite name.
Abbreviation: PCA 02007
Observed fall: No
Year found: 2002
Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)]
Mass:help 22.4 g
Classification
  history:
Antarctic Meteorite Newsletter:  AMN 26(2)  (2003)  Lunar (basaltic breccia)
Meteoritical Bulletin:  MB 88  (2004)  Lunar-anorthositic
MetBase:  v. 7.1  (2006)  Lunar (anorth)
Antarctic Meteorite Newsletter:  AMN 30(2)  (2007)  Lunar (anorthositic regolith breccia)
Recommended:  Lunar (anorth)    [explanation]

This is 1 of 73 approved meteorites classified as Lunar (anorth).   [show all]
Search for other: Lunar meteorites
Writeuphelp
Writeup from AMN 26(2):
Sample No.: PCA 02007
Location: Pecora Escarpment
Field No.: 13690
Dimensions (cm):   4.0x3.5x1.0
Weight (g): 22.372
Meteorite Type: Lunar-Basaltic Breccia
    PCA02007 PCA02007

Macroscopic Description: Kathleen McBride
This is a disk shaped meteorite with brown exterior on the top portion of the rock. The bottom face has tan colored, ropy glass with a frothy appearance. Polygonal fractures and various clasts of different sizes, shapes and colors can be seen. The interior is composed of a hard, dark gray matrix with white clasts. Underneath the tan ropy glass is a layer of shiny green glass.

Thin Section (,4) Description: Tim McCoy, Linda Welzenbach
The section consists of an extremely fine-grained (melt?) matrix with isolated mineral grains and fine- to coarse-grained basaltic clasts in all size ranges up to 2 mm. Microprobe analyses reveal olivine of Fa27-33, pyroxene in a wide range of compositions from pigeonite Fs50Wo4 to augite of Fs19Wo43 with intermediate and more FeO-rich compositions, and plagioclase of An64-100 (with the most An96-100). The Fe/Mn ratio of the pyroxene averages ~53. The meteorite is a basaltic lunar breccia.


Skip TS Images pca02007
PCA 02007 - Plane-Polarized Light PCA 02007 - Cross-Polarized Light PCA 02007 - Plane-Polarized Light PCA 02007 - Cross-Polarized Light
Plane-Polarized Light Cross-Polarized Light Plane-Polarized Light Cross-Polarized Light
Skip TS Images pca02007
PCA 02007 - Plane-Polarized Light PCA 02007 - Cross-Polarized Light PCA 02007 - Plane-Polarized Light PCA 02007 - Cross-Polarized Light
Plane-Polarized Light Cross-Polarized Light Plane-Polarized Light Cross-Polarized Light
Data from:
  MB88
  Table A1
  Line 694:
Mass (g):22.372
Class:Lunar-A
Weathering grade:B
Ferrosilite (mol%):19-50
Catalogs:
Search for this meteorite in the NASA/JSC database (U.S.):   
References: Published in Antarctic Meteorite Newsletter 26(2) (2003), JSC, Houston
Published in Meteoritical Bulletin, no. 88, MAPS 39, A215-A272 (2004)
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Photos:
CreditPhotos
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 40744 approved meteorites from Antarctica (plus 4494 unapproved names)
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