Sample Petrographic Description
Sample Number | MIL 11149 |
Newsletter | 37,2 |
Location | Miller Range |
Field Number | 21597 |
Dimensions (cm) | 2 x 1.4 x 0.9 |
Weight (g) | 5.49 |
Original Classification | L6 Chondrite |
Updated Classification | H5 Chondrite |
Mineral Composition (%Fa & %Fs) | |
Fayalite (mol%): 18;Ferrosilite (mol%): 16 | |
Weathering | |
A/Be | |
Fracturing | |
B | |
Macroscopic Description - Mitchell Haller | |
70% of the exterior of this ordinary chondrite has black fusion crust with brown rust spots. The meteorite is fractured with some evaporites visible on the surface. The interior is a gray matrix with heavier weathering around the edges. Some metal and yellow brown rust is visible. | |
Thin Section Description - | |
Reclassification Notes (AMN 38,1) | |
MIL 11149 was classified as a L6 in the September 2014 (vol.37 No. 2) newsletter. Microprobe analyses of this sample have yielded Fa18 olivine and Fs16 pyroxene, indicating that this sample is instead an H chondrite and it is here reclassified as an H5. The magnetic susceptibility also indicates an H chondrite (χ = 5.32 and 5.34 x 10-9 m3/kg) |
Antarctic Meteorite Images for Sample MIL 11149 | ||||
Thin Section Photo(s) : | ||||