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Met Name

Met Type

Thin Sections

75.4 grams.   CM2

TKW 75.4 grams. Fall not observed. Found 1987 in Antarctica.


 
Location Map of Antarctic Finds



AMN writes:

Macroscopic Description by Roberta Score, Carol Schwarz:

There are spots of oxidation and small deposits of salt in the interior of most of these pebbles; otherwise the matrix is black with abundant white inclusions. Brown patches of fusion crust cover about 80% of 87022 and it has several penetrating fractures and a 1 mm weathering rind.

Thin Section Description (,8) by Brian Mason:

The sections of 87001, 87003, and 87249 are so similar in texture and mineral compositions to those of LEW87022 that these meteorites can confidently be paired; LEW87008, 87025, 87027, 87028, and 87167 resemble them macroscopically and have the same specific gravity, and are therefore also tentatively paired with LEW87022. LEW87022 has a dark brown to black matrix with numerous small (up to 0.3 mm) mineral grains and a few chondrules (up to 0.9 mm across). Microprobe analyses show olivine generally close to Mg2SiO4 in composition, but also a few Fe-rich grains; pyroxene is less abundant than olivine, and most grains have composition near MgSiO3. These meteorites are C2 chondrites.