Antarctic Search for Meteorites (ANSMET) Search this
Weight:
5.512 g
Place:
Antarctica
Collection Date:
1977
Notes:
# NASA data for ALH 77296 Weathering: A/Be Fracturing: A Pairing: ALH 77001 Fa: 24 mol % Fs: 21 mol % ²⁶Al: 67 ± 4 dpm/kg NTL: 1.54 ± 0.08 krad
Remnants of fusion crust are present on the N surface of this angular specimen. The crust is a dull, orangish-brown, covers approximately 15% of the sample and is 1 mm thick. The B surface appears to have had the fusion crust removed; it is smoother than the remaining surfaces, which are fracture surfaces. The matrix is light gray and has iron oxidation associated with the included metallic particles. Both chondrules and lithic clasts, darker and lighter than the matrix material, are present. On the W surface, there is a sub-rounded, gray clast that is more than 1 cm in length. The specimen is 13.0 x 9.5 x 5.0 cm. In the field photographs of this sample, another specimen (ALH 77292) is also present, thus, perhaps, indicating that they are a paired fall.
