Sample Petrographic Description
Sample Number | LAP 04841 |
Newsletter | 29,2 |
Location | LaPaz Ice Field |
Field Number | 17462 |
Dimensions (cm) | 5.0 x 2.5 x 2.5 |
Weight (g) | 55.99 |
Original Classification | Lunar-Basalt |
Pairing | LAP 02205; LAP 02224; LAP 02226; LAP 02436; LAP 03632; LAP 04841; |
Mineral Composition (%Fa & %Fs) | |
Ferrosilite (mol%): 27-75 | |
Weathering | |
A/B | |
Fracturing | |
A/B | |
Macroscopic Description - Kathleen McBride | |
Dull, black fusion crust covers over 50% of the exterior. Some surfaces have shiny areas. The interior is a pinkish tan and white matrix with black glass filled veins. | |
Thin Section Description (,4) - Valerie Reynolds, Tim McCoy, Linda Welzenbach | |
The meteorite is almost certainly paired with the LAP 02205 pairing group. LAP 02205 was described as follows: The section consists of coarse-grained unbrecciated basalt with elongate pyroxene (up to 0.5 mm) and plagioclase laths (up to 1 mm) (~60:40 px:plag), rare phenocrysts of olivine (up to 1 mm) and interstitial oxides and late-stage mesostasis. Shock effects include undulatory extinction in pyroxene and shock melt veins and pockets. Microprobe analyses reveal pigeonite to augite of Fs26-80Wo14-36, plagioclase is An85-90Or0-1 and a single olivine phenocryst is Fa50. The Fe/Mn ratio in the pyroxenes averages ~60. The meteorite is a lunar olivine-bearing basalt. |
Antarctic Meteorite Images for Sample LAP 04841 | ||||
Lab Photo(s) : | ||||
Antarctic Meteorite Images for Sample LAP 04841 | ||||
Thin Section Photo(s) : | ||||
References for Sample LAP04841 | |
Will, P., Busemann, H., Riebe, .E.I., and Maden, C., 2022, Indigenous noble gases in the Moon's interior, Science Advances, 8. | |
Smith, J.P., Smith, F.C., and Booksh, K.S., 2018, Multivariate Curve Resolution–Alternating Least Squares (MCR-ALS) with Raman Imaging Applied to Lunar Meteorites. Appl. Spectrosc. , 72, 404-419. | |
Korotev, R.L., and Zeigler, R.A., 2015, ANSMET Meteorites from the Moon. In Righter, K., Corrigan, C.M., McCoy, T.J., and Harvey, R.P. Meteorites: A Pictorial Guide to the Collection, First Edition, AGU Wiley, pp. 101-130. | |
Day, J. M. D., Walker, R. J., 2015, Highly siderophile element depletion in the Moon. Earth and Planetary Science Letters, 423, 1-Aug-15, 114-124, ISSN 0012-821X, http://dx.doi.org/10.1016/j.epsl.2015.05.001. | |
Tartese, R., Anand, M., Barnes, J. J., Starkey, N. A., Franchi, I. A., Sano, Y., 2013, The abundance, distribution, and isotopic composition of Hydrogen in the Moon as revealed by basaltic lunar samples: Implications for the volatile inventory of the Moon. Geochimica et Cosmochimica Acta, 122, 1-Dec-13, 58-74, ISSN 0016-7037, http://dx.doi.org/10.1016/j.gca.2013.08.014. | |
Hill, E., Taylor, L. A., Floss, C., Liu, Y., 2009, Lunar meteorite LaPaz Icefield 04841: Petrology, texture, and impact-shock effects of a low-Ti mare basalt. Meteoritics & Planetary Science, 44, 87-94, http://dx.doi.org/10.1111/j.1945-5100.2009.tb00719.x. |