Sample Petrographic Description
Sample Number | EET 99443 |
Newsletter | 24,1 |
Location | Elephant Moraine |
Field Number | 12348 |
Dimensions (cm) | 2.0 x 1.0 x 0.5 |
Weight (g) | 2.45 |
Original Classification | Howardite |
Mineral Composition (%Fa & %Fs) | |
Ferrosilite (mol%): 24-52 | |
Weathering | |
A/B | |
Fracturing | |
A/B | |
Macroscopic Description - Kathleen McBride | |
The interior is a medium gray matrix that contains some rusty halos and minor metal. Light gray inclusions are present. | |
Thin Section Description (,2) - Tim McCoy, Linda Welzenbach | |
The section exhibits isolated pyroxene and plagioclase grains up to 0.5 mm. The section contains one part in which the groundmass is finely comminuted pyroxene and plagioclase grains, while the groundmass in the other is a fine-grained, lath-like structure suggestive of an impact melt. Pyroxene (Fs24-52Wo2-40) includes low-FeO orthopyroxene, moderate FeO pigeonite and low-FeO augite. Plagioclase exhibits a range of compositions (An86-95Or0-1). The meteorite is a howardite. |
Antarctic Meteorite Images for Sample EET 99443 | ||||
Lab Photo(s) : | ||||