Sample Petrographic Description
Sample Number | GRO 17006 |
Newsletter | 41,2 |
Location | Grosvenor Mountains |
Field Number | 25708 |
Dimensions (cm) | 4.5 x 3.0 x 2.0 |
Weight (g) | 40.37 |
Original Classification | Eucrite (Polymict) |
Mineral Composition (%Fa & %Fs) | |
Ferrosilite (mol%): 28-64 | |
Weathering | |
A/B | |
Fracturing | |
B | |
Macroscopic Description - Cecilia Satterwhite, Rachel Funk | |
The exterior is 35% covered with black, glassy fusion crust. The exposed surface is a gray matrix with white clasts and minor amounts of rust. The meteorite is pitted. The fresh interior surface has a light gray and white matrix with white 1-2 mm white clasts and 1 mm sized rust spots. | |
Thin Section Description (,2) - Cari Corrigan, Tim McCoy | |
The section represents a single, coarse-grained, cataclastized, brecciated, cumulate eucrite. The section is composed of coarse (up to 2 mm) pyroxene and plagioclase, crosscut by numerous offset fractures. Mineral compositions are homogeneous with orthopyroxene (Fs63-66Wo2), with lamellae of augite (Fs20-29Wo52-66), and plagioclase (An88-92Or0.5). The Fe/Mn ratio of the pyroxene is ~31. The meteorite is a polymict eucrite. |
Antarctic Meteorite Images for Sample GRO 17006 | ||||
Lab Photo(s) : | ||||
Antarctic Meteorite Images for Sample GRO 17006 | ||||
Thin Section Photo(s) : | ||||