Sample Petrographic Description
Sample Number | MIL 090846 |
Newsletter | 35,1 |
Location | Miller Range |
Field Number | 18835 |
Dimensions (cm) | 1.0 x 1.0 x 0.5 |
Weight (g) | 0.88 |
Original Classification | EH6 Chondrite |
Mineral Composition (%Fa & %Fs) | |
Ferrosilite (mol%): 0-2 | |
Weathering | |
B | |
Fracturing | |
B | |
Macroscopic Description - Cari Corrigan, Linda Welzenbach | |
Less than 30% of the exterior is covered with fusion crust. Interior is fine grained and black with minor oxidation staining. No chondrules or metal are visible. | |
Thin Section Description (,2) - Cari Corrigan, Linda Welzenbach | |
The section shows an aggregate of chondrule fragments, and pyroxene grains in a matrix of about 20% metal and sulfide. No chondrules were found, but the section is only 2 mm across and fully fusion-crusted. The groundmass has been extensively recrystallized. Weathering is modest, with staining of some enstatite grains and minor alteration of metal and sulfides. Microprobe analyses show pyroxene compositions of Fs0-2Wo0-0.5. Si in the metal is 2.85 wt. %. The meteorite is a type 6 enstatite chondrite, probably an EH6. |
Antarctic Meteorite Images for Sample MIL 090846 | ||||
Thin Section Photo(s) : | ||||