Sample Petrographic Description
Sample Number | MAC 02833 |
Newsletter | 27,1 |
Location | MacAlpine Hills |
Field Number | 14404 |
Dimensions (cm) | 4.5 x 4.5 x 3.0 |
Weight (g) | 134.10 |
Original Classification | H3.7 Chondrite |
Mineral Composition (%Fa & %Fs) | |
Fayalite (mol%): 13-27;Ferrosilite (mol%): 2-16 | |
Weathering | |
B/C | |
Fracturing | |
A/B | |
Macroscopic Description - Kathleen McBride | |
Brown/black fusion crust with oxidation haloes covers the entire exterior surface. The interior is a medium gray matrix with high metal and light colored, rust stained chondrules, 1-4 mm in size. | |
Thin Section Description (,2) - Linda Welzenbach, Tim McCoy | |
The section exhibits numerous, well-defined chondrules (up to 3 mm) in a black matrix of silicates, metal and troilite. Weak shock effects are present and polysynthetically twinned pyroxenes are present. The meteorite is mildly weathered. Silicates are unequilibrated; olivines range from Fa13-27, with a peak from Fa16-19, and pyroxenes from Fs2-16. The meteorite is a H3 chondrite (estimated subtype 3.7). |
Antarctic Meteorite Images for Sample MAC 02833 | ||||
Lab Photo(s) : | ||||
References for Sample MAC02833 | |
Bonal, L., Quirico, E., Flandinet, L., Montagnac, G., 2016, Thermal history of type 3 chondrites from the Antarctic meteorite collection determined by Raman spectroscopy of their polyaromatic carbonaceous matter. Geochimica et Cosmochimica Acta, 189, 312-337. | |
RELAB, , Reflectance Experiment Lab , catalogue of samples. |