Sample Petrographic Description
Sample Number | DOM 19346 |
Newsletter | 44,2 |
Location | Dominion Range |
Field Number | 26677 |
Dimensions (cm) | 8.5 x 7.0 x 4.0 |
Weight (g) | 326.39 |
Original Classification | Eucrite (Brecciated) |
Mineral Composition (%Fa & %Fs) | |
Ferrosilite (mol%): 20-60 | |
Weathering | |
A/B | |
Fracturing | |
A/B | |
Macroscopic Description - Nicole Lunning and Cecilia Satterwhite | |
The exterior of this achondrite has 90% fusion crust; 20% of the fusion crust has a vitreous (shiny) luster, the rest is black-grey matte. There are some evaporites visible and the exposed grey matrix has mm-sized light inclusions. The interior is a dark grey matrix containing clasts with sub-ophitic texture, and light-colored inclusions. In addition, some glassy vitreous inclusions are visible with a binocular microscope. About 10% of the interior exhibits rust spots. | |
Thin Section Description (,,2) - Cari Corrigan, Tim McCoy | |
The section shows a groundmass of mm-scale comminuted pyroxene and plagioclase (with fine- to coarse-grained basaltic clasts ranging up to 4 mm. Some of the clasts are sulfide rich. Most of the pyroxene is orthopyroxene with compositions ranging from Fs20-60Wo3-8. The meteorite is a brecciated eucrite. |
Antarctic Meteorite Images for Sample DOM 19346 | ||||
Lab Photo(s) : | ||||
Antarctic Meteorite Images for Sample DOM 19346 | ||||
Thin Section Photo(s) : | ||||