Antarctic Search for Meteorites (ANSMET) Search this
Weight:
0.5 g
Place:
Antarctica
Collection Date:
1978
Notes:
# NASA data for MET 78001 Weathering: B/C Fracturing: B Fa: 17 mol % Fs: 14-21 mol % ²⁶Al: 53 ± 3 dpm/kg
This sample is shaped like a boomerang and is entirely covered with fusion crust. The fusion crust on the B surface has an iridescent sheen, is much thinner than the fusion crust on the remainder of the sample, and has a well defined area of weathering, 1 cm from the edge of the sample. Remaining surfaces have dull, brownish-black fusion crust. Small regmaglypts are apparent on the T and N surfaces and flow bands are present in the B surface at the E and W ends. Small fractures exist on the T and B surfaces, but they do not appear to penetrate the specimen. The interior material of the meteorite ranges from being completely weathered and iron oxide stained to unweathered. The weathered portions are massive and are preferentially located in the T half of the sample. The unweathered areas are light grayish-green and contain unoxidized metallic fragments.
