Sample Petrographic Description
Sample Number | LAP 04581 |
Newsletter | 30,2 |
Location | LaPaz Ice Field |
Field Number | 17466 |
Dimensions (cm) | 3.0 x 2.0 x 1.5 |
Weight (g) | 16.02 |
Original Classification | LL5 Chondrite |
Mineral Composition (%Fa & %Fs) | |
Fayalite (mol%): 31;Ferrosilite (mol%): 25 | |
Weathering | |
A/B | |
Fracturing | |
A/B | |
Macroscopic Description - Kathleen McBride | |
The exterior of this ordinary chondrite has 75% rusty black fusion crust with polygonal fractures. The interior is a gray matrix with gray chondrules and moderate metal. | |
Thin Section Description - Tim McCoy, Lauren LaCroix, Linda Welzenbach | |
The meteorite is an LL5 chondrite (Fa31, Fs25) with thin metal-sulfide, shock-melt veins. |
Antarctic Meteorite Images for Sample LAP 04581 | ||||
Lab Photo(s) : | ||||
Antarctic Meteorite Images for Sample LAP 04581 | ||||
Thin Section Photo(s) : | ||||
References for Sample LAP04581 | |
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. | |
Rubin, A. E., Swindle, T. D., 2011, Flattened chondrules in the LAP 04581 LL5 chondrite: Evidence for an oblique impact into LL3 material and subsequent collisional heating. Meteoritics & Planetary Science, 46, 587-600, http://dx.doi.org/10.1111/j.1945-5100.2011.01176.x. |