Sample Petrographic Description
Sample Number | MIL 090650 |
Newsletter | 35,2 |
Location | Miller Range |
Field Number | 20492 |
Dimensions (cm) | 6.2 x 3.5 x 2.0 |
Weight (g) | 92.94 |
Original Classification | L3.8 Chondrite |
Mineral Composition (%Fa & %Fs) | |
Fayalite (mol%): 12-20;Ferrosilite (mol%): 5-22 | |
Weathering | |
B | |
Fracturing | |
A | |
Macroscopic Description - Cecilia Satterwhite | |
90% of the exterior has brown/black fusion crust with oxidation haloes. The interior is a dark gray to black matrix with abundant chondrules/inclusions. Oxidation is scattered throughout and minor metal is visible. | |
Thin Section Description (,2) - Cari Corrigan, Tim McCoy, Nicole Lunning | |
The section shows a close-packed aggregate of chondrules and chondrule fragments (up to 2.25 mm across) in a dark matrix containing a small amount of nickel-iron and troilite. The meteorite is moderately weathered, with brown limonitic staining throughout the section. Microprobe analyses show olivine and pyroxene of variable composition: olivine, Fa12-20; pyroxene, Fs5-22. The meteorite is classified as an L3 chondrite estimated to be of subtype 3.8. |
Antarctic Meteorite Images for Sample MIL 090650 | ||||
Lab Photo(s) : | ||||
Antarctic Meteorite Images for Sample MIL 090650 | ||||
Thin Section Photo(s) : | ||||