Sample Petrographic Description
Sample Number | QUE 97430 |
Newsletter | 23,1 |
Location | Queen Alexandra Range |
Field Number | 11198 |
Dimensions (cm) | 4.6 x 4.5 x 3.3 |
Weight (g) | 69.71 |
Original Classification | Eucrite (Brecciated) |
Mineral Composition (%Fa & %Fs) | |
Ferrosilite (mol%): 60 | |
Weathering | |
B | |
Fracturing | |
A/B | |
Macroscopic Description - Cecilia Satterwhite | |
The exterior of this achondrite has about 20% of black fusion crust, frothy on some surfaces, and some fractures are visible. The rest of the exterior is dark gray with abundant white inclusions. The interior is a lighter gray with abundant white clasts. Some darker minerals are visible and minor weathering. Some clasts are as large as 1.5 cm across. | |
Thin Section Description (,6) - Tim McCoy | |
The section consists of coarse (up to 2.2 mm) pyroxene and plagioclase grains and coarse-grained basalt clasts, which reach 2.5 mm in diameter. Orthopyroxene (Fs60Wo2-5) contains lamellae of augite (Fs28Wo44) and plagioclase is An88Or0.6. Shock effects include mosaicism and planar fractures in pyroxene. The Fe/Mn ratio of the pyroxene is ~30. The meteorite is a brecciated eucrite. |
Antarctic Meteorite Images for Sample QUE 97430 | ||||
Lab Photo(s) : | ||||
Antarctic Meteorite Images for Sample QUE 97430 | ||||
Thin Section Photo(s) : | ||||