Sample Petrographic Description
Sample Number | LAP 03922 |
Newsletter | 29,1 |
Location | LaPaz Ice Field |
Field Number | 16471 |
Dimensions (cm) | 3.0 x 2.0 x 1.5 |
Weight (g) | 16.00 |
Original Classification | H Chondrite (Impact Melt) |
Mineral Composition (%Fa & %Fs) | |
Fayalite (mol%): 19;Ferrosilite (mol%): 17 | |
Weathering | |
C | |
Fracturing | |
B | |
Macroscopic Description - Kathleen McBride | |
Black fusion crust covers 40% of this meteorite's exterior. The interior is rusty with high metal content. | |
Thin Section Description (,2) - Tim McCoy, Valerie Reynolds | |
The section consists of highly-shocked clasts of H chondrite (Fa19, Fs17) material in a shock-melted matrix of relict crystals set in a fine-grained igneous matrix with metal-sulfide blebs. |
Antarctic Meteorite Images for Sample LAP 03922 | ||||
Lab Photo(s) : | ||||
References for Sample LAP03922 | |
Swindle, T. D., Kring, D. A., Weirich, J. R., 2013, 40Ar/39Ar ages of impacts involving ordinary chondrite meteorites. Geological Society, London, Special Publications, 378, 2013, SP378-6. | |
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. |