Sample Petrographic Description
Sample Number | MET 00570 |
Newsletter | 26,1 |
Location | Meteorite Hills |
Field Number | 13516 |
Dimensions (cm) | 6.5 x 5.0 x 2.5 |
Weight (g) | 157.02 |
Original Classification | H3.8 Chondrite |
Pairing | MET 00570; MET 01182; |
Mineral Composition (%Fa & %Fs) | |
Fayalite (mol%): 13-19;Ferrosilite (mol%): 12-17 | |
Weathering | |
C | |
Fracturing | |
B | |
Macroscopic Description - Kathleen McBride | |
100% of the exterior is covered with brown/black fusion crust. Some fractures and oxidation haloes are visible. The interior is a black and rust colored matrix with a high metal content. The matrix contains light colored clasts. Some of these clasts are stained with rust. Their sizes ranges from 2 mm - 1 cm in diameter. | |
Thin Section Description (,2) - Tim McCoy | |
The section exhibits numerous chondrules (up to 2 mm), metal and troilite. Chondrules appear somewhat aligned. Terrestrial iron oxides stain the silicates. Olivines range from Fa13-19 and pyroxenes from Fs12-17. The meteorite is an H3 chondrite (estimated subtype 3.8). | |
Notes | |
Righter, K., Schutt, J., Lunning, N., Harvey, R., & Karner, J. (2021a) Identification and pairing reassessment of unequilibrated ordinary chondrites from four Antarctic dense collection areas. Meteoritics & Planetary Science 56, 1556-1578. |
Antarctic Meteorite Images for Sample MET 00570 | ||||
Lab Photo(s) : | ||||
References for Sample MET00570 | |
Righter, K., Schutt, J., Lunning, N., Harvey, R, and Karner, J., 2021, Identification and pairing reassessment of unequilibrated ordinary chondrites from four Antarctic dense collection areas. Meteoritics & Planetary Science, 56, 1556-1573, doi: 10.1111/maps.13707. | |
RELAB, , Reflectance Experiment Lab , catalogue of samples. |