Sample Petrographic Description
Sample Number | LAP 10130 |
Newsletter | 36,1 |
Location | LaPaz Ice Field |
Field Number | 22868 |
Dimensions (cm) | 7.0 x 6.3 x 3.0 |
Weight (g) | 352.60 |
Original Classification | EL6 Chondrite |
Mineral Composition (%Fa & %Fs) | |
Ferrosilite (mol%): 0-1 | |
Weathering | |
Be | |
Fracturing | |
A | |
Macroscopic Description - Cecilia Satterwhite | |
The heavily rusted exterior has brown/black fusion crust with oxidation haloes and evaporites. The bluish gray matrix has minor oxidation and no visible metal or inclusion/chondrules. | |
Thin Section Description (,2) - Cari Corrigan, Tim McCoy, Linda Welzenbach | |
Only vague traces of chondritic structure are visible in the thin section, which shows the meteorite to consist largely of prismatic or granular enstatite (grain size 0.1-0.2 mm), a considerable amount of nickel-iron, and minor amounts of sulfides and plagioclase. The meteorite is mildly weathered. Microprobe analyses show that the enstatite is almost pure MgSiO3 (FeO 0.1-0.3%); on average, the nickel-iron contains 0.9% Si. The meteorite is an EL6 chondrite. |
Antarctic Meteorite Images for Sample LAP 10130 | ||||
Lab Photo(s) : | ||||
Antarctic Meteorite Images for Sample LAP 10130 | ||||
Thin Section Photo(s) : | ||||
References for Sample LAP10130 | |
Hellmann, J.L., Hopp, T., Burkhardt, C., Becker, H., Fischer-Godde, M., and Kleine, T., 2021, Tellurium isotope cosmochemistry: Implications for volatile fractionation in chondrite parent bodies and origin of the late veneer. Geochimica et Cosmochimica Acta, 309, 313–328, https://doi.org/10.1016/j.gca.2021.06.038. | |
Render, J., Fischer-Gödde, M., Burkhardt, C., & Kleine, T. , 2017, The cosmic molybdenum-neodymium isotope correlation and the building material of the Earth. . Geochem. Perspect. Lett.|, 3, 170-178, doi: 10.7185/geochemlet.1720. | |
Fischer-Gödde, M., & Kleine, T. , 2017, Ruthenium isotopic evidence for an inner Solar System origin of the late veneer. Nature, 541, 525-527, doi:10.1038/nature21045. |