Sample Petrographic Description
Sample Number | QUE 99134 |
Newsletter | 24,2 |
Location | Queen Alexandra Range |
Field Number | 11656 |
Dimensions (cm) | 0.5 x 0.5 x 0.25 |
Weight (g) | 0.39 |
Original Classification | Metal |
Mineral Composition (%Fa & %Fs) | |
Fayalite (mol%): 25;Ferrosilite (mol%): 23 | |
Weathering | |
A/B | |
Fracturing | |
A/B | |
Macroscopic Description - Kathleen McBride | |
The exterior is vesicular and covered completely with brown/black fusion crust. The interior has a high metal content with some white granular minerals and some black spongy material. | |
Thin Section Description (,5) - Tim McCoy, Linda Welzenbach, Gretchen Benedix | |
The section measures 5 by 3 mm and is greater than 95% metal. The metal is fairly uniform in composition (~23% Ni) and appears to be a fine plessitic structure heat altered to α2. Other phases include troilite, chromite, olivine (Fa25) and orthopyroxene (Fs23). The meteorite may be metal from an L chondrite, which was heat-altered during atmospheric entry. |