Sample Petrographic Description
Sample Number | MET 01086 |
Newsletter | 26,1 |
Location | Meteorite Hills |
Field Number | 13859 |
Dimensions (cm) | 2.0 x 1.5 x 1.0 |
Weight (g) | 2.73 |
Original Classification | Eucrite (Unbrecciated) |
Pairing | MET 01081; MET 01086; |
Mineral Composition (%Fa & %Fs) | |
Ferrosilite (mol%): 28-56 | |
Weathering | |
A/B | |
Fracturing | |
A/B | |
Macroscopic Description - Kathleen McBride | |
90% of the exteriors are covered with a shiny, black fusion crust with a rough texture or regmaglypt. The interior matrices are crystalline in texture and tan to gray in color. Both contain small (<1 mm) white inclusions and black grains. | |
Thin Section Description (,2) - Tim McCoy | |
These meteorites are so similar that a single description suffices. The meteorites are unbrecciated, medium-grained basalts composed of pyroxene (exsolved on a scale of 1-5µm), and plagioclase with minor metal and sulfide. The meteorite is extensively shocked, with mosaicism in both pyroxene and plagioclase. Mineral compositions are homogeneous with orthopyroxene (Fs55Wo4), with lamellae of augite (Fs28Wo36), and plagioclase (An88Or0.5). The Fe/Mn ratio of the pyroxene is ~30. The meteorites are unbrecciated eucrites. |
Antarctic Meteorite Images for Sample MET 01086 | ||||
Lab Photo(s) : | ||||