Sample Petrographic Description
Sample Number | LAR 06628 |
Newsletter | 31,2 |
Location | Larkman Nunatak |
Field Number | 19309 |
Dimensions (cm) | 3.75 x 3.0 x 2.75 |
Weight (g) | 27.04 |
Original Classification | CV3 Chondrite |
Updated Classification | CV 3.6 Chondrite Oxidized B |
Pairing | LAR 06317; LAR 06628; LAR 06867; LAR 12002; LAR 12049; |
Mineral Composition (%Fa & %Fs) | |
Fayalite (mol%): 0-3;Ferrosilite (mol%): 0-1 | |
Weathering | |
B/Ce | |
Fracturing | |
A/B | |
Macroscopic Description - Kathleen McBride | |
10% of the exterior of this carbonaceous chondrite has vesicular black fusion crust with polygonal fractures. The interior is black with evaporites and an oxidation rind. Millimeter sized gray chondrules are visible. | |
Thin Section Description (,3) - Tim McCoy, Linda Welzenbach | |
The section exhibits chondrules (up to 1 mm) and CAIs in a dark matrix. Olivines range from Fa0-3 and pyroxenes from Fs0-1. The meteorite is an unequilibrated carbonaceous chondrite, probably a CV3. | |
Reclassification Notes (AMN 46,1) | |
Reclassification and pairing based on Raman spectroscopy (petrologic type 3.6), and on Ni content of metal and sulfide and magnetic susceptibility (Oxidized B). Details are reported in Righter et al. (2022); doi: 10.1111/maps.13932. |
Antarctic Meteorite Images for Sample LAR 06628 | ||||
Lab Photo(s) : | ||||
Antarctic Meteorite Images for Sample LAR 06628 | ||||
Thin Section Photo(s) : | ||||