Sample Petrographic Description
Sample Number | LAR 06686 |
Newsletter | 32,2 |
Location | Larkman Nunatak |
Field Number | 19538 |
Dimensions (cm) | 3.0 x 3.0 x 1.5 |
Weight (g) | 21.89 |
Original Classification | CM2 Chondrite |
Mineral Composition (%Fa & %Fs) | |
Fayalite (mol%): 0-45;Ferrosilite (mol%): 0-1 | |
Weathering | |
B/C | |
Fracturing | |
A/B | |
Macroscopic Description - Kathleen McBride | |
The exterior has thick black patches with polygonal fractures. The interior is a charcoal black with a brown oxidation rind. Some mm sized chondrules are visible. | |
Thin Section Description (,2) - Cari Corrigan, Tim McCoy, Linda Welzenbach | |
The section consists of minimally-altered, abundant, small chondrules (up to 0.5 mm), mineral grains and CAIs set in a hydrated matrix; minor metal and sulfide grains are present. Olivine compositions are Fa0-45, with a peak at Fa0-1, orthopyroxene is Fs0-3. The meteorite is a CM2 chondrite. |
Antarctic Meteorite Images for Sample LAR 06686 | ||||
Lab Photo(s) : | ||||
Antarctic Meteorite Images for Sample LAR 06686 | ||||
Thin Section Photo(s) : | ||||