Sample Petrographic Description
Sample Number | DOM 18304 |
Newsletter | 42,2 |
Location | Dominion Range |
Field Number | 25065 |
Dimensions (cm) | 3.7 x 3.5 x 1.6 |
Weight (g) | 29.17 |
Original Classification | Howardite |
Pairing | DOM 18165; DOM 18304; |
Mineral Composition (%Fa & %Fs) | |
Ferrosilite (mol%): 28-63 | |
Weathering | |
A/B | |
Fracturing | |
A/B | |
Macroscopic Description - Kellye Pando, Cecilia Satterwhite | |
85% black shiny fusion crust on the exterior with some pitted areas; some of the fusion crust is glassy texture; exposed interior is tannish gray with light/dark and weathered minerals visible; the interior is a light gray matrix with abundant light/dark minerals visible and minor oxidation. | |
Thin Section Description (,2) - Cari Corrigan, Tim McCoy | |
These two sections consist of a comminuted matrix of mineral fragments up to 1 mm in size, with clasts including coarse ophitic and medium grained granoblastic textures. Clasts reach up to 5 mm in maximum dimension. Pyroxenes are Fs21-63Wo2-44 and feldspars are An86-89Or1. The meteorites are similar enough that one description suffices, and are both howardites. |
Antarctic Meteorite Images for Sample DOM 18304 | ||||
Lab Photo(s) : | ||||