Sample Petrographic Description
Sample Number | GRO 17188 |
Newsletter | 45,2 |
Location | Grosvenor Mountains |
Field Number | 25773 |
Dimensions (cm) | 3.3 x 2.9 x 2.0 |
Weight (g) | 45.87 |
Original Classification | EH3 Chondrite |
Mineral Composition (%Fa & %Fs) | |
Ferrosilite (mol%): 0-2 | |
Weathering | |
B/Ce | |
Fracturing | |
A | |
Macroscopic Description - Cecilia Satterwhite | |
Black/brown fusion crust with oxidation covers 90% of the exterior surface. The interior has a dark grey matrix with metal and oxidation scattered, with some rusty areas. | |
Thin Section Description - | |
The section shows an aggregate of chondrules (up to 1 mm), chondrule fragments, and pyroxene grains in a matrix of ~30% metal and sulfide. Weathering is minor, with staining of enstatite grains and minor alteration of metal and sulfides. Microprobe analyses show the pyroxene is Fs0-2. FeNi metal contains 2.7 wt.% Si. The meteorite is an EH3 enstatite chondrite. |
Antarctic Meteorite Images for Sample GRO 17188 | ||||
Lab Photo(s) : | ||||
Antarctic Meteorite Images for Sample GRO 17188 | ||||
Thin Section Photo(s) : | ||||