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| Pecora Escarpment 01023 | |||||||||||||||||||||||||||||||||||||
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| Basic information | Name: Pecora Escarpment 01023 This is an OFFICIAL meteorite name. Abbreviation: PCA 01023 Observed fall: No Year found: 2002 Country: Antarctica [Collected by Planetary Studies Foundation (US)] Mass:  20.9 g | ||||||||||||||||||||||||||||||||||||
| Classification history: |
This is 1 of 21 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 | ||||||||||||||||||||||||||||||||||||
| Writeup |
Writeup from MB 100:
Pecora Escarpment 01023 (PCA 01023) 85°39.190’S, 68°36.190’W Antarctica Found: 2002 Jan 18 Classification: Enstatite chondrite (EH4) Petrography: Small, separated well-formed RP chondrules and some mineral fragments set in a dark red-brown to black matrix. A single forsterite grain was found. Accessory minerals include daubreelite, troilite (some Ni-bearing), Ni-poor metal, caswellsilverite and albite. Only one olivine grain found. Kamacite contains 2.8 to 3.1 wt% Si and 2.8 to 3.5 wt% Ni. Geochemistry: Orthopyroxene Fs0.5Wo0.5; Fs4.5Wo4.7, olivine Fa0.05 Classification: EH4. Almost identical to PCA 01027 and very likely paired with it. Specimens: Remaining stone plus one polished thin section at FMNH | ||||||||||||||||||||||||||||||||||||
| Data from: MB100 Table 1 Line 1763: |
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| 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) |
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| References: | Published in Meteoritical Bulletin, no. 100, MAPS 49, E1-E101 (2014)
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Geography:
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Statistics: This is 1 of 43856 approved meteorites from Antarctica (plus 3802 unapproved names) | ||||||||||||||||||||||||||||||||||||
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