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LEW 87004   contributed by AMN   MetBul Link


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View all entries for   Meteorite (2)   AMN (153)


Fall not observed. Found 1987 in Antarctica.208 grams. 70 x 6o x 45 mm.   Eucrite-pmict
Location Map of Antarctic Finds



AMN writes:
Macroscopic Description - Carol Schwarz
This eucrite is ~90% covered by black shiny fusion crust. Flow lines occur on most surfaces. There are a few pitted areas where fusion crust is absent. The interior is gray with mm-sized white clasts, 1-2 mm dark gray inclusions, and minor oxidation.
Thin Section Description (,2) - Brian Mason
The section shows a microbreccia of pyroxene and plagioclase grains, up to 0.6 mm across, in a comminuted groundmass of these minerals; a few small lithic clasts are present. Microprobe analyses show pyroxene with a wide range of compositions: Wo2-27, Fs31-56, En31-61; plagioclase composition is An83-89. The meteorite is a polymict eucrite.
 


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John Divelbiss
 5/26/2016 6:35:58 AM
Nice Fall not Witnessed Paul ,,,the Polymict Eucrites are a very appealing/interesting class of Achondrites.
Graham
 5/26/2016 5:20:51 AM
Beautiful stone.
 

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