Sample Petrographic Description
Sample Number | GRO 17211 |
Newsletter | 41,2 |
Location | Grosvenor Mountains |
Field Number | 25551 |
Dimensions (cm) | 3.6 x 3.6 x 2.0 |
Weight (g) | 47.30 |
Original Classification | Eucrite (Polymict) |
Pairing | GRO 17039; GRO 17211; |
Mineral Composition (%Fa & %Fs) | |
Ferrosilite (mol%): 28-65 | |
Weathering | |
A/B | |
Fracturing | |
B | |
Macroscopic Description - Cecilia Satterwhite, Kellye Pando, Rachel Funk | |
The exterior is covered with 60% black glassy fusion crust. The exposed interior is a gray matrix with white clasts throughout. The clasts are 2-4 mm in size and some are weathered to a beige color. There are some fractures cutting through the meteorite's interior. The fresh interior is a gray matrix with white clasts 2-4 mm in size. Minor amounts of orange rust present. | |
Thin Section Description (,2) - Cari Corrigan, Tim McCoy, Nicole Lunning | |
The sections consist of a fine-grained brecciated matrix with up to 2.5 mm clasts of coarse-grained eucritic material. Mineral compositions are homogeneous with orthopyroxene (Fs65Wo2), lamellae of augite (Fs27Wo52-65), and plagioclase (An88Or0.5). The Fe/Mn ratio of the pyroxene is ~31. The meteorites are polymict eucrites. |
Antarctic Meteorite Images for Sample GRO 17211 | ||||
Lab Photo(s) : | ||||
Antarctic Meteorite Images for Sample GRO 17211 | ||||
Thin Section Photo(s) : | ||||