Antarctic Search for Meteorites (ANSMET) Search this
Weight:
0.23 g
Place:
Antarctica
Collection Date:
1977
Notes:
# NASA data for ALH 77004 Weathering: C Fracturing: C Pairing: ALH 77004 Fa: 17-20 mol % Fs: 15-27 mol % ²⁶Al: 52 ± 5 dpm/kg NTL: 35.5 ± 0.3 krad
The angular specimen, 7.0x5.5x2.0 cm, has many parallel fractures. Only the B surface has dull, brownish-black fusion crust. The other surfaces are weathered orangish brown. Because of the severity of the weathering, it is impossible to define the shape, size, and color of the inclusions. Other Characteristics: When attempting to obtain a suitable thin section sample, the stone broke into six documented pieces. All pieces are severely weathered; no non-weathered surfaces were observed.
