Sample Petrographic Description
Sample Number | QUE 93017 |
Newsletter | 18,2 |
Location | Queen Alexandra Range |
Field Number | 7878 |
Dimensions (cm) | 2.5 x 2.2 x 2.0 |
Weight (g) | 8.84 |
Original Classification | C2 Chondrite |
Updated Classification | CM2 Chondrite |
Pairing | QUE 93004; QUE 93006; QUE 93017; QUE 97003; QUE 97005; |
Mineral Composition (%Fa & %Fs) | |
Fayalite (mol%): 1-22;Ferrosilite (mol%): 1-3 | |
Weathering | |
A/Be | |
Fracturing | |
A/B | |
Macroscopic Description - Robbie Marlow | |
Dull black fusion crust covers 60% of the exterior of this carbonaceous chondrite. Evaporite deposit is present on some surfaces and some surface fracturing is visible. The interior matrix is black with abundant millimeter-sized white inclusions. The matrix is fined grained and evenly textured. | |
Thin Section Description (,2) - Brian Mason | |
The section shows a few chondrules, up to 0.6 mm across, some irregular aggregates, and numerous small silicate grains in a black matrix. The silicate grains are almost entirely olivine near Mg2SiO4 in composition, with a few more iron-rich grains. A little pyroxene near MgSiO3 in composition is present. The matrix appears to consist largely of iron-rich serpentine. The meteorite is a C2 chondrite; it is very similar to QUE93004 and 93006, with which it is probably paired. | |
Reclassification Notes (AMN 33,1) | |
Many carbonaceous chondrites were initially classified as C2 in early newsletters. These are mostly CM2, based on matrix properties, chondrules abundance and sizes, and therefore all these samples have been reclassified more specifically here as CM2. |
Antarctic Meteorite Images for Sample QUE 93017 | ||||
Lab Photo(s) : | ||||
Antarctic Meteorite Images for Sample QUE 93017 | ||||
Thin Section Photo(s) : | ||||