Sample Petrographic Description
Sample Number | MIL 090799 |
Newsletter | 35,2 |
Location | Miller Range |
Field Number | 20696 |
Dimensions (cm) | 3.5 x 3.0 x 1.5 |
Weight (g) | 28.76 |
Original Classification | LL Chondrite (Impt Melt) |
Mineral Composition (%Fa & %Fs) | |
Fayalite (mol%): 32;Ferrosilite (mol%): 26 | |
Weathering | |
C | |
Fracturing | |
C | |
Macroscopic Description - Kathleen McBride | |
Thin brown/black fractured fusion crust covers the surface. The interior is rusty and brittle with high metal content. | |
Thin Section Description (,2) - Cari Corrigan, Nicole Lunning | |
The section consists dominantly of a fine-grained melt-textured matrix of olivine and pyroxene (1-10 microns) with irregular blebs of metal and sulfide and fragments of mineral grains (200-300 micron grain size.) The mineral compositions are homogenous; olivine is Fa32 and orthopyroxene is Fs26. The meteorite is an impact melt of an LL chondrite precursor, and possibly just a clast within an LL chondrite breccias, as one end of the section shows usual LL chondrite textures. |
Antarctic Meteorite Images for Sample MIL 090799 | ||||
Thin Section Photo(s) : | ||||