Sample Petrographic Description
Sample Number | QUE 99231 |
Newsletter | 24,2 |
Location | Queen Alexandra Range |
Field Number | 11649 |
Dimensions (cm) | 1.5 x 1.0 x 0.75 |
Weight (g) | 1.50 |
Original Classification | Diogenite |
Mineral Composition (%Fa & %Fs) | |
Ferrosilite (mol%): 20 | |
Weathering | |
A | |
Fracturing | |
A/B | |
Macroscopic Description - Kathleen McBride | |
25% of the exterior surface is covered with thin, black shiny fusion crust. This achondrite's interior has an off-white, opaque crystalline matrix with ~ 1 mm size black and green minerals. | |
Thin Section Description (,3) - Tim McCoy, Linda Welzenbach | |
The section shows a groundmass of coarse (up to 2 mm) comminuted orthopyroxene, with a composition of Fs20Wo1-2. The Fe/Mn ratio of the pyroxene is ~30. The section exhibits a slight granoblastic texture. The meteorite is a diogenite. |
Antarctic Meteorite Images for Sample QUE 99231 | ||||
Lab Photo(s) : | ||||