Sample Petrographic Description
Sample Number | DOM 18293 |
Newsletter | 43,1 |
Location | Dominion Range |
Field Number | 25082 |
Dimensions (cm) | 1.8 x 2.1 x 1.5 |
Weight (g) | 8.33 |
Original Classification | Eucrite (Brecciated) |
Mineral Composition (%Fa & %Fs) | |
Ferrosilite (mol%): 30-63 | |
Weathering | |
A | |
Fracturing | |
A/B | |
Macroscopic Description - Kellye Pando | |
Exterior is 90% covered with a black fractured fusion crust that is shiny in some areas and rough in others. Exposed areas are light grey matrix with white and black inclusions <0.5mm. Fresh interior is light grey matrix with white and black inclusions <0.5mm as well as some larger (2-mm) areas of white matrix. | |
Thin Section Description (,2) - Cari Corrigan, Tim McCoy | |
This meteorite is dominated by fine-grained (~200 micron average grain size) basaltic material which occurs as both the host and clasts within this meteorite. Occasional coarser-grained clasts, with grain sizes up to 1 mm, are observed. Fine grained aphanitic clasts are also present. Mineral compositions are homogeneous with orthopyroxene (Fs60-63Wo3-6), with lamellae of augite (Fs30Wo41), and plagioclase (An84-92Or0.5-2). The Fe/Mn ratio of the pyroxene is ~31-34. The meteorite is a brecciated eucrite. |
Antarctic Meteorite Images for Sample DOM 18293 | ||||
Lab Photo(s) : | ||||
Antarctic Meteorite Images for Sample DOM 18293 | ||||
Thin Section Photo(s) : | ||||