Sample Petrographic Description
Sample Number | LAP 031022 |
Newsletter | 28,2 |
Location | LaPaz Ice Field |
Field Number | 16018 |
Dimensions (cm) | 2.5 x 1.5 x 1.0 |
Weight (g) | 4.16 |
Original Classification | CM2 Chondrite |
Mineral Composition (%Fa & %Fs) | |
Fayalite (mol%): 1-12;Ferrosilite (mol%): 1 | |
Weathering | |
B | |
Fracturing | |
A/B | |
Macroscopic Description - Kathleen McBride | |
The meteorite has black patches of fusion crust over 20% of its surface. The charcoal gray matrix contains white specks. | |
Thin Section Description (,2) - Tim McCoy | |
The section consists of numerous small chondrules (up to 1 mm), mineral grains and CAIs set in a black matrix; rare metal and sulfide grains are present. Chondrules exhibit relatively little alteration and are set in a matrix of serpentine. Olivine compositions are Fa1-12, with a peak at Fa0-2; a single pyroxene is Fs1. The meteorite is a CM2 chondrite. |
Antarctic Meteorite Images for Sample LAP 031022 | ||||
Lab Photo(s) : | ||||
Antarctic Meteorite Images for Sample LAP 031022 | ||||
Thin Section Photo(s) : | ||||