Sample Petrographic Description
Sample Number | MIL 05139 |
Newsletter | 29,2 |
Location | Miller Range |
Field Number | 18161 |
Dimensions (cm) | 3.0 x 2.0 x 1.25 |
Weight (g) | 10.60 |
Original Classification | EH3 Chondrite |
Mineral Composition (%Fa & %Fs) | |
Fayalite (mol%): 2;Ferrosilite (mol%): 0-3 | |
Weathering | |
C | |
Fracturing | |
C | |
Macroscopic Description - Kathleen McBride | |
50% of the exterior has smooth brown/black fusion crust. The interior is a rusty brown color that is very weathered and crumbles easily. | |
Thin Section Description (,2) - Tim McCoy | |
The section shows an aggregate of chondrules (up to 1 mm), chondrule fragments, and pyroxene grains in a matrix of about 30% metal and sulfide. Chondrules contain moderate to small abundances of olivine. Microprobe analyses show the olivine is Fa2 and pyroxene is Fs0-3. Metal contains ~0.6 wt. % Si. The meteorite is a type 3 enstatite chondrite, probably an EH3. |