Sample Petrographic Description
Sample Number | QUE 99473 |
Newsletter | 25,2 |
Location | Queen Alexandra Range |
Field Number | 12707 |
Dimensions (cm) | 0.6 x 0.6 x 0.4 |
Weight (g) | 0.27 |
Original Classification | EH Chondrite |
Updated Classification | EH Chondrite (Impt Melt) |
Mineral Composition (%Fa & %Fs) | |
Ferrosilite (mol%): 1-2 | |
Weathering | |
B/C | |
Fracturing | |
A | |
Macroscopic Description - Cecilia Satterwhite | |
98% of the exterior of this meteorite has black fusion crust with oxidation haloes. The interior consists of a brown/black matrix with some metal. | |
Thin Section Description (,2) - Linda Welzenbach, Tim McCoy, Gretchen Benedix | |
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. Olivine is absent. The matrix has an igneous texture typical of impact-melted enstatite chondrites such as Abee. Weathering is modest, with staining of some enstatite grains and minor alteration of metal and sulfides. Microprobe analyses show pyroxene is Fs1-2. The meteorite appears to be an EH impact melt breccia. | |
Reclassification Notes (AMN 31,1) | |
Reclassified as EH Chondrite (Impact Melt) in AMN 31,1 |