Sample Petrographic Description
Sample Number | MIL 07666 |
Newsletter | 31,2 |
Location | Miller Range |
Field Number | 18159 |
Dimensions (cm) | 5.0 x 2.9 x 1.4 |
Weight (g) | 96.25 |
Original Classification | Iron-IIAB |
Weathering | |
A/B | |
Fracturing | |
A | |
Macroscopic Description - Cari Corrigan, Linda Welzenbach | |
This lozenge-shaped meteorite is flight oriented with a slight melt flange on the top side. The bottom or flight surface is finely pitted, the top side smoother but with sporadic, deeper regmaglypts. Fusion crust is 100% and exhibits mild oxidation in the form of iridescence and minor halos. | |
Thin Section Description - Tim McCoy, Cari Corrigan, Linda Welzenbach | |
The meteorite was examined from a cut and etched surface, which bisected one end or nose of the specimen. A thin fusion crust is preserved over most of the meteorite, and gradational heat alteration zone of approximately 1.0-2 mm thick underlies the fusion crust on the bottom or flight side, and is less than 0.3 mm thick on the top side. A prominent coarse α2 structure is found throughout. The section exhibits subequant grains ranging up to 1 mm in size which meet at 120° triple junctions. |
Antarctic Meteorite Images for Sample MIL 07666 | ||||
Lab Photo(s) : | ||||
Antarctic Meteorite Images for Sample MIL 07666 | ||||
Thin Section Photo(s) : | ||||