| Pairing |
|
| Newsletter |
31,2 |
| Location |
Miller Range |
| Field Number |
19101 |
| Dimensions |
11.0 x 9.0 x 8.5 |
| Weight |
924.2 |
| Original Classification |
Diogenite (Olivine) |
| Macroscopic Description - Roger Harrington |
| Dull black fusion crust covers 40% of this achondrite’s exterior. Approximately 40% of the exterior is a tan to medium olive green with a fine grained matrix. 20% is medium to light olive green with a coarse grained matrix. One 3 mm diameter dark mineral inclusion is present on the top north side. Cleavage planes are visible on the inclusion when viewed under a hand lens. The interior is a medium gray to orange tan fine grained matrix with less than 1% small (<1 mm) dark mineral inclusions. |
| Thin Section
(,7) Description - Tim McCoy and Linda Welzenbach |
| The section is unbrecciated and is dominated by 0.5-1 mm equigranular orthopyroxene with abundant 120° triple junctions. Olivine occurs as rounded grains both interstitially to and poikilitically enclosed in the orthopyroxene. Opaques included oxides, troilite and metal. Orthopyroxene has a composition of Fs23 Wo2 and olivine is Fa28. The Fe/Mn ratio of the pyroxene is ~30. The meteorite is an olivine diogenite. |
