1735 grams.
Fall not observed. Found 1987.
Location Map of Antarctic Finds Howardite
AMN writes:
Macroscopic Description: René Martinez
All of these specimens retain at least a small patch of fusion crust. EET87513 is completely covered. All have a light gray matrix hosting a variety of angular clasts: fine-grained monomineralic clasts, coarse-grained feldspathic clasts, and aphanitic black clasts ranging from sub-mm to 2 cm in size.
Thin Section (87503,2; 87509,11;.87510,6;.87512,8;.87513,8;.87518,7;.87531,8) Description: Brian Mason
EET87503,2 shows a groundmass of comminuted pyroxene (orthopyroxene and pigeonite) and plagioclase (grains up to 0.3 mm) with a few larger mineral grains and rare polymineralic clasts up to 2.5 mm across. Opaques are present in small amounts. Microprobe analyses show a wide range in pyroxene composition: Wo1-22, Fs20-56, En24-76, but with orthopyroxene clustered around Wo2Fs23 and pigeonite around Wo12Fs50. Plagioclase composition is An88-95. In the field 87509, 87510, 87518, and 87531 were noted as possibly paired. These, and EET87513 closely resemble EET87503,2 and the same description applies to them. EET87512,8 contains a clast, 9x3 mm, consisting of subequal amounts of plagioclase (An78-93) and pyroxene (slightly variable, average Wo7Fs33). These meteorites are howardites and are all very similar.
Click to view larger photos #1 #2
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