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Pecora Escarpment 01027
Basic information Name: Pecora Escarpment 01027
     This is an OFFICIAL meteorite name.
Abbreviation: PCA 01027
Observed fall: No
Year found: 2002
Country: Antarctica [Collected by Planetary Studies Foundation (US)]
Mass:help 4.5 g
Classification
  history:
Meteoritical Bulletin:  MB 100  (2012)  EH4
Recommended:  EH4    [explanation]

This is 1 of 20 approved meteorites classified as EH4.   [show all]
Search for other: EH chondrites, Enstatite chondrites, Enstatite chondrites (type 4-7), and Enstatite-rich meteorites
Comments: Approved 19 Jan 2012
Writeuphelp
Writeup from MB 100:

Pecora Escarpment 01027 (PCA 01027)        85°39.112’S, 68°38.510’W

Antarctica

Found: 2002 Jan 20

Classification: Enstatite chondrite (EH4)

Petrography: Small, separated well-formed RP chondrules and some mineral fragments are set in a dark red-brown to black matrix. Accessory minerals include kamacite, daubreelite, Cr-bearing troilite (some Ti-bearing), schreibersite and perryite. Kamacite contains 2.8 to 3.1 wt% Si and 2.8 to 3.5 wt% Ni.

Geochemistry: Orthopyroxene Fs0.9Wo0.1 and Fs6.2Wo3.7.

Classification: EH4.  Almost identical to PCA 01023 and very likely paired with it.

Specimens: Remaining stone plus one polished thin section at FMNH

Data from:
  MB100
  Table 1
  Line 1767:
Origin or pseudonym:Pecora Escarpment
Date:2002 Jan 20
Latitude:85°39.112'S
Longitude:68°38.510'W
Mass (g):4.5
Pieces:1
Class:EH4
Shock stage:S2
Weathering grade:W1
Ferrosilite (mol%):0.9; 6.2
Wollastonite (mol%):0.1; 3.7
Classifier:A. Irving and S. Kuehner, UWS
Type spec mass (g):4.5
Type spec location:FMNH
Main mass:FMNH
Finder:R. Garriott
Comments:Submitted by P. Sipiera
Institutions
   and collections
FMNH: Department of Geology The Field Museum of Natural History 1400 South Lake Shore Drive Chicago, IL 60605-2496, USA, United States; Website (institutional address; updated 16 Nov 2011)
UWS: University of Washington, Department of Earth and Space Sciences, 70 Johnson Hall, Seattle, WA 98195, United States (institutional address; updated 15 Jan 2012)
Catalogs:
References: Published in Meteoritical Bulletin, no. 100, MAPS 49, E1-E101 (2014)
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Geography:

Antarctica
Coordinates:
     Recommended::   (85° 39' 7"S, 68° 38' 31"W)

Statistics:
     This is 1 of 38940 approved meteorites from Antarctica (plus 5051 unapproved names)
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