Sample Petrographic Description
Sample Number | LAP 04462 |
Newsletter | 30,2 |
Location | LaPaz Ice Field |
Field Number | 17335 |
Dimensions (cm) | 4.0 x 3.5 x 2.0 |
Weight (g) | 45.95 |
Original Classification | H Chondrite (Impact Melt) |
Mineral Composition (%Fa & %Fs) | |
Fayalite (mol%): 18;Ferrosilite (mol%): 16 | |
Weathering | |
C | |
Fracturing | |
C | |
Macroscopic Description - Kathleen McBride | |
This ordinary chondrite has a dark brown exterior. It has a rusty black interior and a high metal content. | |
Thin Section Description - Tim McCoy, Linda Welzenbach | |
The meteorite is an impact-melt rock of H chondrite composition (Fa18, Fs16) with a fine-grained silicate matrix, rounded metal-sulfide blebs and relict mineral grains. |
Antarctic Meteorite Images for Sample LAP 04462 | ||||
Lab Photo(s) : | ||||
Antarctic Meteorite Images for Sample LAP 04462 | ||||
Thin Section Photo(s) : | ||||
References for Sample LAP04462 | |
Wittman, A., Swindle, T. D., Cheek, L. C., Frank, E. A., Kring, D. A., 2010, Impact cratering on the H chondrite parent asteroid. Journal of Geophysical Research: Planets, 115 (E7), 2010, 1991-2012. | |
Swindle, T. D., Isachsen, C. E., Weirich, J. R., Kring, D. A., 2009, 40Ar-39Ar ages of H-chondrite impact melt breccias. Meteoritics & Planetary Science, 44, 747-762, http://dx.doi.org/10.1111/j.1945-5100.2009.tb00766.x. | |
RELAB, , Reflectance Experiment Lab , catalogue of samples. |