Sample Petrographic Description
Sample Number | GRO 17064 |
Newsletter | 41,2 |
Location | Grosvenor Mountains |
Field Number | 25714 |
Dimensions (cm) | 6.0 x 6.0 x 5.5 |
Weight (g) | 226.40 |
Original Classification | CR2 Chondrite |
Pairing | GRO 17063; GRO 17064; |
Mineral Composition (%Fa & %Fs) | |
Fayalite (mol%): 1-36;Ferrosilite (mol%): 9-19 | |
Weathering | |
B | |
Fracturing | |
A | |
Macroscopic Description - Cecilia Satterwhite | |
The exterior is black patches of fusion crust, areas without fusion crust are gray/black with abundant inclusions and chondrules of various sizes and colors. Some areas have brown/rusty colored oxidation. The interior is a brown matrix with some dark gray to black matrix. Inclusions and chondrules of various sizes and colors are present. | |
Thin Section Description (,2) - Cari Corrigan, Tim McCoy | |
The sections exhibit large (up to 2 mm), well-defined, metal-rich chondrules and CAIs in a dark matrix of FeO-rich phyllosilicate. Polysynthetically twinned pyroxene is abundant. Silicates are unequilibrated; olivines range from Fa1-38, with most Fa0-2, and pyroxenes from Fs9-19Wo1-2. The meteorites are likely paired CR2 chondrites. |
Antarctic Meteorite Images for Sample GRO 17064 | ||||
Lab Photo(s) : | ||||
Antarctic Meteorite Images for Sample GRO 17064 | ||||
Thin Section Photo(s) : | ||||
References for Sample GRO17064 | |
Abreu, N.M., Aponte, J.C., Cloutis, E.A. , and Nguyen, A.N., 2020, The Renazzo-like carbonaceous chondrites as resources to understand the origin, evolution, and exploration of the solar system. Geochemistry, 80, 125631. |