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| Pecora Escarpment 91006 | |||||||||||||||||||||||||
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| Basic information | Name: Pecora Escarpment 91006 This is an OFFICIAL meteorite name. Abbreviation: PCA 91006 Observed fall: No Year found: 1991 Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)] Mass:  104.4 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 15(2):
Sample No.: PCA91006 Location: Pecora Escarpment Field Number: 7707 Dimensions (cm): 7.3 x 4.5 x 2.2 Weight (g): 104.4 Meteorite Type: Eucrite
Macroscopic Description: Cecilia Satterwhite Seventy percent of this eucrite is covered with dark black fusion crust, which is pitted, fractured and shiny in some areas. Flow marks are present. The interior is light to medium gray and coarse grained with abundant clasts as large as 1 cm. The clasts range in color from white to coarse-grained beige and black (basaltic). Some clasts are oxidized. Metal is visible.
Thin Section (,5) Description: Brian Mason The section shows numerous clasts, up to 3.6 mm in greatest dimension, in a fine-grained matrix of comminuted pyroxene and plagioclase with accessory opaques. Most of the clasts consist of pyroxene and plagioclase with coarse to fine texture, but some consist entirely of plagioclase. Pyroxene compositions show two groups, low-calcium (Wo2-5Fs39-55) and high-calcium (Wo38-42Fs16-30), with a few grains of intermediate composition. Plagioclase compositions are somewhat variable, An78-91. The meteorite is a eucrite.
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| Data from: MB76 Table 2 Line 4868: |
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| References: | Published in Antarctic Meteorite Newsletter 15(2) (1992), 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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