Sample Petrographic Description
Sample Number | GRO 17128 |
Newsletter | 44,2 |
Location | Grosvenor Mountains |
Field Number | 25609 |
Dimensions (cm) | 3.2 x 2.6 x 2.0 |
Weight (g) | 38.74 |
Original Classification | CO3 Chondrite |
Mineral Composition (%Fa & %Fs) | |
Fayalite (mol%): 1-51;Ferrosilite (mol%): 1-7 | |
Weathering | |
B | |
Fracturing | |
A | |
Macroscopic Description - Cecilia Satterwhite | |
The exterior has 80% black/brown fusion crust with oxidation. Areas without fusion crust are weathered. The interior is a black matrix with light/white specks throughout and some oxidation visible; some inclusions/chondrules are light gray; sample was difficult to break. | |
Thin Section Description (,,2) - Cari Corrigan, Tim McCoy | |
The section consists of abundant small (up to 1 mm) chondrules, chondrule fragments, CAIs, and mineral grains in a dark matrix. Metal and sulfide occur within and rimming the chondrules. Olivine ranges in composition from Fa1-51. Pyroxene analyses range from Fs1-7. Terrestrial weathering effects are modest. The meteorite is a CO3 chondrite. |
Antarctic Meteorite Images for Sample GRO 17128 | ||||
Lab Photo(s) : | ||||