Sample Petrographic Description
Sample Number | GRO 17004 |
Newsletter | 41,2 |
Location | Grosvenor Mountains |
Field Number | 25740 |
Dimensions (cm) | 5.0 x 4.3 x 2.3 |
Weight (g) | 52.93 |
Original Classification | CM2 Chondrite |
Mineral Composition (%Fa & %Fs) | |
Fayalite (mol%): 0-39 | |
Weathering | |
Be | |
Fracturing | |
B/C | |
Macroscopic Description - Cecilia Satterwhite | |
40% of the exterior has black, frothy, fractured and pitted fusion crust. The areas without fusion crust are brown and heavily fractured/pitted with rusty areas. Some weathered inclusions/chondrules and minor evaporites are visible. The interior is a black matrix with an evaporite rim on one surface, and some oxidation in areas. Some mm-sized weathered and white inclusions are visible. | |
Thin Section Description (,2) - Cari Corrigan, Tim McCoy | |
The section consists of a few small chondrules (up to 0.5 mm), mineral grains and CAIs set in a black matrix; rare metal and sulfide grains are present. Olivine compositions are Fa0-39. Aqueous alteration of the matrix is substantial, but the chondrules are only modestly altered. The meteorite is a CM2 chondrite. |
Antarctic Meteorite Images for Sample GRO 17004 | ||||
Lab Photo(s) : | ||||
Antarctic Meteorite Images for Sample GRO 17004 | ||||
Thin Section Photo(s) : | ||||