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Pecora Escarpment 02018
Basic information Name: Pecora Escarpment 02018
     This is an OFFICIAL meteorite name.
Abbreviation: PCA 02018
Observed fall: No
Year found: 2002
Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)]
Mass:help 3.1 g
Classification
  history:
Antarctic Meteorite Newsletter:  AMN 27(1)  (2004)  Howardite
Meteoritical Bulletin:  MB 88  (2004)  Howardite
MetBase:  v. 7.1  (2006)  Howardite
Recommended:  Howardite    [explanation]

This is 1 of 398 approved meteorites classified as Howardite.   [show all]
Search for other: Achondrites, HED achondrites, and Howardites
Writeuphelp
Writeup from AMN 27(1):
Sample No.: PCA 02009; PCA 02013; PCA 02014;
PCA 02015; PCA 02018; PCA 02019
Location: Pecora Escarpment
Field No.: 13655; 13622; 13693; 13637; 13636; 13646
Dimensions (cm):   3.0x2.0x2.25
5.0x3.0x2.25
3.5x2.5x1.5
3.5x2.5x1.5
2.0x1.25x1.0
2.5x2.5x1.5
Weight (g): 22.509; 40.961; 21.244; 16.794; 3.058; 11.701
Meteorite Type: Howardite
PCA02009 PCA02013
PCA02014 PCA02015
PCA02018 AND PCA02019

Macroscopic Description: Kathleen McBride
Fusion crust ranges from black to brown and is shiny and glassy with oxidation haloes. The interiors of these howardites are a gray to black matrix with some oxidation and multicolored inclusions.

Thin Section (,2) Description: Tim McCoy, Linda Welzenbach
These sections are similar enough that a single description will suffice. Each show a groundmass of comminuted pyroxene (up to 2 mm) and plagioclase with fine- to coarse-grained basaltic, impact-melt and diogentitic clasts ranging up to 3 mm. Minerals include abundant orthopyroxene with compositions ranging from Fs17-60Wo2-8 (Fe/Mn ~29), augite of Fs~40, plagioclase (An90-95) and SiO2. These meteorites are howardites. They are almost certainly paired with each other and with PCA 02016.

PCA 02009 - Cross-Polarized Light PCA 02009 - Plane-Polarized Light PCA 02013 - Cross-Polarized Light PCA 02013 - Plane-Polarized Light
PCA 02009
Cross-Polarized Light
PCA 02009
Plane-Polarized Light
PCA 02013
Cross-Polarized Light
PCA 02013
Plane-Polarized Light
PCA 02013 - Cross-Polarized Light PCA 02013 - Plane-Polarized Light PCA 02014 - Cross-Polarized Light PCA 02014 - Plane-Polarized Light
PCA 02013
Cross-Polarized Light
PCA 02013
Plane-Polarized Light
PCA 02014
Cross-Polarized Light
PCA 02014
Plane-Polarized Light
PCA 02014 - Cross-Polarized Light PCA 02014 - Plane-Polarized Light PCA 02015 - Cross-Polarized Light PCA 02015 - Plane-Polarized Light
PCA 02014
Cross-Polarized Light
PCA 02014
Plane-Polarized Light
PCA 02015
Cross-Polarized Light
PCA 02015
Plane-Polarized Light
PCA 02018 - Cross-Polarized Light PCA 02018 - Plane-Polarized Light PCA 02018 - Reflected Light
PCA 02018
Cross-Polarized Light
PCA 02018
Plane-Polarized Light
PCA 02018
Reflected Light
PCA 02019 - Cross-Polarized Light PCA 02019 - Plane-Polarized Light
PCA 02019
Cross-Polarized Light
PCA 02019
Plane-Polarized Light

Data from:
  MB88
  Table A1
  Line 705:
Mass (g):3.055
Class:How
Weathering grade:B
Ferrosilite (mol%):22-57
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)
Find references in NASA ADS:
Find references in Google Scholar:
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 40759 approved meteorites from Antarctica (plus 4494 unapproved names)
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