Antarctic Search for Meteorites (ANSMET) Search this
Weight:
110.214 g
Place:
Antarctica
Collection Date:
1977
Notes:
# NASA data for ALH 77221 Weathering: C Fracturing: A Pairing: ALH 77004 Fa: 15 mol % Fs: 13-15 mol % ²⁶Al: 57 ± 2 dpm/kg
All surfaces of the meteorite, with the exception of the S surface, have remnant patches of thin, dull black fusion crust. The exterior surfaces devoid of fusion crust are stained by iron oxidation. Several clasts, approximately 1 mm in diameter, are apparent on the S surface. The specimen is fractured. Chipping revealed no unweathered material in the interior of the sample.
