Sample Petrographic Description
Sample Number | MIL 13317 |
Newsletter | 38,2 |
Location | Miller Range |
Field Number | 22275 |
Dimensions (cm) | 3.3 x 3.1 x 2.0 |
Weight (g) | 32.25 |
Original Classification | Lunar-Anorth. Breccia |
Updated Classification | Lunar Polymict Regolith Breccia |
Mineral Composition (%Fa & %Fs) | |
Ferrosilite (mol%): 28-49 | |
Weathering | |
B | |
Fracturing | |
A/B | |
Macroscopic Description - Mitchell Haller | |
A patch of glossy black fusion crust covers 25% of the exterior. Areas without fusion crust have a greenish tint with large inclusions visible. The interior is a light to dark gray breccia with white inclusions and numerous clasts ranging in size from 1 mm to 1 cm. | |
Thin Section Description (,2) - Cari Corrigan, Tim McCoy | |
This meteorite is a breccia comprised of coarse- and fine-grained clasts up to 8 mm in maximum dimension, set in a comminuted matrix. The clasts are heavily shocked to impact melted. Pyroxenes range from Fs28Wo11 to Fs49Wo35 with a nearly continuous range of intermediate compositions. The Fe/Mn ratio of the pyroxene is ~60. Plagioclase is An80-98Or0-1. The meteorite is lunar. | |
Reclassification Notes (AMN 47,1) | |
Dropped the anorthositic intensifier and added polymict to reflect the presence of subequal basaltic and anorthositic clasts. Added regolith to name consistent with glassy matrix. Curran, N. M., Joy, K. H., Snape, J. F., PernetâFisher, J. F., Gilmour, J. D., Nemchin, A. A., ... & Burgess, R. (2019) The early geological history of the Moon inferred from ancient lunar meteorite Miller Range 13317. Meteoritics & Planetary Science, 54(7), 1401-1430. |
Antarctic Meteorite Images for Sample MIL 13317 | ||||
Lab Photo(s) : | ||||
Antarctic Meteorite Images for Sample MIL 13317 | ||||
Thin Section Photo(s) : | ||||
References for Sample MIL13317 | |
Curran, N.M., Joy, K.H., Snape, J.F., Pernet-Fisher, J.F., Gilmour, J.D., Nemchin, A.A., Whitehouse, M.J., and Burgess, R., 2019, The early geological history of the Moon inferred from ancient lunar meteorite Miller Range 13317, Meteoritics & Planetary Science, 54, 1401-1430, doi: 10.1111/maps.13295. | |
Snape, J. F., Curran, N. M., Whitehouse, M. J., Nemchin, A. A., Joy, K. H., Hopkinson, T., ... & Kenny, G. G., 2018, Ancient volcanism on the Moon: Insights from Pb isotopes in the MIL 13317 and Kalahari 009 lunar meteorites. Earth and Planetary Science Letters,, 502, 84-95. |