Sample Petrographic Description
Sample Number | GRO 17039 |
Newsletter | 41,2 |
Location | Grosvenor Mountains |
Field Number | 25544 |
Dimensions (cm) | 2.5 x 1.7 x 1.3 |
Weight (g) | 8.27 |
Original Classification | Eucrite (Polymict) |
Pairing | GRO 17039; GRO 17211; |
Mineral Composition (%Fa & %Fs) | |
Ferrosilite (mol%): 27-62 | |
Weathering | |
A/B | |
Fracturing | |
A | |
Macroscopic Description - Cecilia Satterwhite, Rachel Funk | |
25% of the exterior is covered with black fusion crust. The interior is a coarse grained gray and white matrix. There are rust spots in the matrix ranging from 1.5 to 2 mm in diameter. The interior is light gray and white matrix with rust spots. | |
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 17039 | ||||
Lab Photo(s) : | ||||
Antarctic Meteorite Images for Sample GRO 17039 | ||||
Thin Section Photo(s) : | ||||