Sample Petrographic Description
Sample Number | DOM 14170 |
Newsletter | 39,2 |
Location | Dominion Range |
Field Number | 22541 |
Dimensions (cm) | 6.0 x 4.0 x 2.5 |
Weight (g) | 224.60 |
Original Classification | Iron-Ungrouped |
Weathering | |
A/B | |
Fracturing | |
A | |
Macroscopic Description - Tim McCoy | |
This ovoid specimen measures ~6 by 4 by 2.5 cm. One half of the specimen is convex and relatively smooth, with numerous indentations of 1-2 mm in diameter. A distinct rim separates the upper and lower surfaces of the meteorite, likely a reflection of oriented flight with melted material streaming to the midpoint. The center ridge is 1-1.5 cm in width and contains regularly-spaced indentations ~7 mm in diameter. We have not observed similar indentations on other iron meteorites. The lower surface resembles the upper surface, but is overlain by the rim material around its edges. | |
Thin Section Description (,2) - Cari Corrigan, Tim McCoy | |
A complete longitudinal section was studied. The section consists of spare, thin (50-150 micron) kamacite lamellae in a matrix of abundant plessite. Schreibersites occur within the kamacite lamellae. No fusion crust or α2 region was observed. A microprobe traverse across the section yielded an approximate composition of 10.2 wt.% Ni and 0.40 wt.% P. In the absence of additional studies, the relatively high-Ni combined with high-P suggests that this iron may be ungrouped. View the 3D Rendering. |
Antarctic Meteorite Images for Sample DOM 14170 | ||||
Lab Photo(s) : | ||||