Antarctic Search for Meteorites (ANSMET) Search this
Weight:
1.81 g
Place:
Antarctica
Collection Date:
1978
Notes:
# NASA data for ALH 78131 Weathering: B/C Fracturing: A Fa: 25 mol % Fs: 21 mol % ²⁶Al: 40 ± 3 dpm/kg
A thin, shiny black fusion crust covers the specimen, with the exceptions of most of T surface and portions of the N and B surfaces. Shallow regmaglypts are present on the S, W, and T surfaces. The surfaces that are devoid of fusion crust are weathered and stained by iron-oxidation and range texturally from smooth to rough on a centimeter scale. Several light colored clasts are present on the surfaces devoid of fusion crust. No fractures are present in the sample. When the meteorite was cleaved during processing, only a small amount of unweathered material was exposed.
