Sample Petrographic Description
Sample Number | DOM 18173 |
Newsletter | 42,2 |
Location | Dominion Range |
Field Number | 25137 |
Dimensions (cm) | 4.3 x 2.0 x 1.6 |
Weight (g) | 49.38 |
Original Classification | Iron-Ungrouped |
Weathering | |
B | |
Fracturing | |
A | |
Macroscopic Description - Cari Corrigan, Tim McCoy | |
This meteorite has an overall convex shape that bears a striking resemblance to the asteroid Eros. The concave surface is brown, lightly weathered and pitted. The convex surface has two prominent protrusions and is also lightly weathered and moderately pitted. Hints of a lip between the convex and concave surfaces are visible on each of the long surfaces of the mass. | |
Thin Section Description (,1) - Cari Corrigan, Tim McCoy | |
The section consists of equant kamacite grains up to 1.5 mm in dimension with interstitial ribbons of taenite and occasional schreibersite. Graphite blebs of a few tens of microns in size form swarms whose occurrence is independent of the kamacite grains structure. No fusion crust is observed on the section although α2 structure is present along some margins of the meteorite and occasionally along kamacite-kamacite grain boundaries suggestive of an origin by shock. The average Ni concentrations determined from two perpendicular longitudinal traverses is 7 wt. % Ni. The meteorite contains less than 0.1 wt. % P. The meteorite is likely an ungrouped iron, not paired with other DOM irons. |
Antarctic Meteorite Images for Sample DOM 18173 | ||||
Lab Photo(s) : | ||||
Antarctic Meteorite Images for Sample DOM 18173 | ||||
Thin Section Photo(s) : | ||||