Sample Petrographic Description
Sample Number | QUE 99517 |
Newsletter | 25,1 |
Location | Queen Alexandra Range |
Field Number | 12525 |
Dimensions (cm) | 1.4 x 0.8 x 0.5 |
Weight (g) | 1.35 |
Original Classification | L3.4 Chondrite |
Mineral Composition (%Fa & %Fs) | |
Fayalite (mol%): 9-28;Ferrosilite (mol%): 4-21 | |
Weathering | |
B | |
Fracturing | |
A/B | |
Macroscopic Description - Cecilia Satterwhite | |
90% of the exterior surface is covered with brown/black fractured fusion crust. Some oxidation haloes are visible. The interior is dark gray to black with minor metal and some rusty areas. Larger white/gray inclusions are abundant. Some inclusions are weathered. | |
Thin Section Description (,2, 4) - Linda Welzenbach, Tim McCoy, Gretchen Benedix | |
The sections exhibit numerous large (up to 2.5 mm), well-defined chondrules in a black matrix of fine-grained silicates, metal, and troilite. Polysynthetically twinned pyroxene is extremely abundant. The meteorites are highly weathered. Silicates are unequilibrated; olivines range from Fa3-35, with several grains ~Fa25, and pyroxenes from Fs4-24. The meteorite is an L3 chondrite and may be of reasonably low subtype (estimated subtype 3.4). |
Antarctic Meteorite Images for Sample QUE 99517 | ||||
Lab Photo(s) : | ||||