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| Pecora Escarpment 91079 | |||||||||||||||||||||||||
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| Basic information | Name: Pecora Escarpment 91079 This is an OFFICIAL meteorite name. Abbreviation: PCA 91079 Observed fall: No Year found: 1991 Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)] Mass:  3.7 g | ||||||||||||||||||||||||
| Classification history: |
This is 1 of 237 approved meteorites classified as Eucrite-br. [show all] Search for other: Achondrites, Eucrites, and HED achondrites | ||||||||||||||||||||||||
| Writeup |
Writeup from AMN 16(1):
Sample No.: PCA91079; 91159; 91193 Location: Pecora Escarpment Dimensions (cm): 2 x 1 x 0.8; 2.5 x 1.5 x 1.0; 2.5 x 2.0 x 1.2 Weight (g): 3.7; 8.4; 12.3 Meteorite Type: Eucrite
Macroscopic Description: Carol Schwarz and Celicia Satterwhite All three of these specimens are -80% covered with thin shiny black fusion crust. The interior matrices are gray in color with numerous <0.5 mm white and tan clasts. PCA91159 contains a large area of dark (glassy ?) matrix, and 91193 has evaporite deposits.
Thin Section (91079,2; 91159,2; 91193,21 Description: Brian Mason These sections are so similar that a single description suffices; the meteorites are probably paired. They show clasts of plagioclase and pyroxene, up to 2.4 mm in maximum dimension, in a comminuted matrix of these minerals. Plagioclase composition is An85-90. Pyroxene compositions cluster around Wo2Fs46, with some more calcic grains, ranging up to Wo38Fs18. The meteorites are monomict eucrites.
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| Data from: MB76 Table 2 Line 4928: |
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| References: | Published in Antarctic Meteorite Newsletter 16(1) (1993), JSC, Houston Published in Meteoritical Bulletin, no. 76, Meteoritics 29, 100-143 (1994)
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Geography:
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Statistics: This is 1 of 44543 approved meteorites from Antarctica (plus 3802 unapproved names) | ||||||||||||||||||||||||
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| Revision history: |
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