Newsletter |
32,1 |
Location |
Miller Range |
Field Number |
19209 |
Dimensions (cm) |
6.0 x 4.0 x 2.5 |
Weight (g) |
71.12 |
Original Classification |
Howardite |
Updated Classification |
Diogenite |
Ferrosilite (mol%): 20-60 |
A/B |
A/B |
85% of the meteorite is covered with brown/black fusion crust with shiny patches. The interior is a gray to tan matrix with white and dark gray inclusions and tan clasts. There are plucked areas and more weathering than 663 and 664. |
The section shows a groundmass of comminuted pyroxene and plagioclase (up to 0.5 mm) with fine- to coarse-grained basaltic clasts ranging up to 3 mm. Large, mm-sized metal particles are relatively common in this section. Pyroxene includes diogenite-like compositions (Fs20-30Wo1-2) and eucrite-like compositions (Fs28-60Wo2-42). Plagioclase is An89-96. The meteorite is a howardite. |
MIL 07665 has a low POEM value (percentage of eucrite material) similar to other MIL diogenites ~ 12. Welten, K. et al. (2024) Terrestrial Ages and pairing of HEDs from the Miller Range Icefields, Antarctica. LPSC abstract. 55th Lunar and Planetary Science Conference, #1295. |