Sample Petrographic Description
Sample Number | QUE 93705 |
Newsletter | 18,2 |
Location | Queen Alexandra Range |
Field Number | 8242 |
Dimensions (cm) | 3.8 x 3.4 x 2.0 |
Weight (g) | 54.97 |
Original Classification | L3.7 Chondrite |
Updated Classification | L3.4 Chondrite |
Mineral Composition (%Fa & %Fs) | |
Fayalite (mol%): 6-19;Ferrosilite (mol%): 2-19 | |
Weathering | |
B | |
Fracturing | |
A | |
Macroscopic Description - Cecilia Satterwhite | |
Ninety percent of the exterior of this L chondrite is covered with shiny, smooth, dark brown to black fusion crust. Areas devoid of fusion crust are weathered and have a rough texture. The interior is dark brown to black and fine-grained. Oxidation is scattered heavily throughout the sample. Some small weathered inclusions are visible. | |
Thin Section Description (,2) - Brian Mason | |
The section shows numerous chondrules (up to 1.8 mm across), chondrule fragments, and mineral grains in a small amount of black matrix. The matrix contains a small amount of nickel-iron and troilite. Weathering is extensive, with brown limonitic staining throughout the section. Microprobe analyses shows a considerable range in olivine and pyroxene compositions: olivine, Fa6-19, mean Fa14; pyroxene, Fs2-19. The meteorite is classified as an L3 chondrite (estimated L3.7). | |
Reclassification Notes (AMN 33,1) | |
Original classification in AMN 18, no. 2 as an L3.7 Chondrite. Reclassified as an L3.4 Chondrite ([1] Benoit, P. et al., 2002). References:
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Antarctic Meteorite Images for Sample QUE 93705 | ||||
Thin Section Photo(s) : | ||||