Sample Petrographic Description
Sample Number | MIL 07016 |
Newsletter | 32,1 |
Location | Miller Range |
Field Number | 18302 |
Dimensions (cm) | 7.5 x 6.0 x 4.0 |
Weight (g) | 302.39 |
Original Classification | Eucrite (Brecciated) |
Mineral Composition (%Fa & %Fs) | |
Ferrosilite (mol%): 49-64 | |
Weathering | |
A/B | |
Fracturing | |
A/B | |
Macroscopic Description - Cecilia Satterwhite | |
80% of the exterior surface has black, fractured fusion crust. Some areas look shiny and wet. The exterior is pitted and the exposed matrix is gray. The interior reveals a fine-grained gray matrix with minor oxidation scattered throughout. Light and dark minerals are visible. | |
Thin Section Description (,4) - Tim McCoy, Linda Welzenbach | |
This meteorite is dominated by fine-grained (~200 micron average grain size) basaltic material which occurs as both the host and clasts within the meteorite. Shock effects are extensive, with mosaicism of the pyroxene. Pyroxene compositions are Fs49-64Wo6-23 and plagioclase is An88. The Fe/Mn ratio of the pyroxene is ~28. The meteorite is a brecciated eucrite. |
Antarctic Meteorite Images for Sample MIL 07016 | ||||
Lab Photo(s) : | ||||
Antarctic Meteorite Images for Sample MIL 07016 | ||||
Thin Section Photo(s) : | ||||
References for Sample MIL07016 | |
Mittlefehldt, D.W., Greenwood, R.C., Berger, E.L., Le, L., Peng, Z.X., and Ross, D.K., 2022, Eucrite-type achondrites: Petrology and oxygen isotope compositions, Meteoritics & Planetary Science, 57, 484-526, doi:10.1111/maps.13730. |