Sample Petrographic Description
Sample Number | GRO 17112 |
Newsletter | 43,1 |
Location | Grosvenor Mountains |
Field Number | 25511 |
Dimensions (cm) | 2.9 x 2.5 x 1.9 |
Weight (g) | 16.32 |
Original Classification | EH3 Chondrite |
Mineral Composition (%Fa & %Fs) | |
Fayalite (mol%): 0.5;Ferrosilite (mol%): 0-1 | |
Weathering | |
B/C | |
Fracturing | |
B | |
Macroscopic Description - Kellye Pando | |
Very dark red-brown possible fusion crust that is fractured with orange rust spots covers about 30% of exterior while exposed areas are weathered with a dark red-brown varnish though some spherical inclusions are visible. Fresh interior is a fine-grained matrix that is weathered to a dark orange-brown color with metal inclusions throughout. | |
Thin Section Description (,2) - Cari Corrigan, Tim McCoy | |
The section shows an aggregate of chondrules (up to 1 mm), chondrule fragments, and pyroxene grains in a matrix of about 30% metal and sulfide. Chondrules contain moderate to significant abundances of olivine. Weathering is modest, with staining of some enstatite grains and minor alteration of metal and sulfides. Microprobe analyses show the olivine is Fa0.5 and pyroxene is Fs0-1. FeNi metal contains 2.7 wt.% Si. The meteorite is an EH3 enstatite chondrite. |
Antarctic Meteorite Images for Sample GRO 17112 | ||||
Lab Photo(s) : | ||||
Antarctic Meteorite Images for Sample GRO 17112 | ||||
Thin Section Photo(s) : | ||||