Sample Petrographic Description
Sample Number | PRE 95401 |
Newsletter | 20,2 |
Location | Mt. Prestrud |
Field Number | 7667 |
Dimensions (cm) | 5.5 x 4.5 x 3.5 |
Weight (g) | 186.53 |
Original Classification | L3.4 Chondrite |
Mineral Composition (%Fa & %Fs) | |
Fayalite (mol%): 1-32;Ferrosilite (mol%): 4-18 | |
Weathering | |
A/B | |
Fracturing | |
B | |
Macroscopic Description - Kathleen McBride | |
The exterior of this ordinary chondrite has thin, weathered brown/black fusion crust, rusty in areas with some fractures present. The interior reveals a medium gray crystalline matrix with numerous light-colored chondrules and irregularly shaped inclusions. The sample is rusty in areas and metal grains are present. | |
Thin Section Description (,2) - Brian Mason | |
The section shows numerous chondrules and chondrule fragments, up to 1.8 mm across, in a black matrix containing small amounts of nickel-iron and troilite. The chondrules are mainly granular and porphyritic olivine and olivine-pyroxene, with a few radiating and cryptocrystalline pyroxene. Microprobe analyses show olivine and pyroxene of variable composition; olivine, Fa1-32, mean Fa14; pyroxene, Fs4-18. The meteorite is classified as an L3 chondrite (estimated L3.4). |
Antarctic Meteorite Images for Sample PRE 95401 | ||||
Lab Photo(s) : | ||||
Antarctic Meteorite Images for Sample PRE 95401 | ||||
Thin Section Photo(s) : | ||||
References for Sample PRE95401 | |
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. | |
Vernazza, P., and M. Lockhart , B. Zanda, R. P. Binzel, T. Hiroi, F. E. DeMeo, M. Birlan, R. Hewins, L. Ricci, P. Barge, 2014, Multiple and fast: The accretion of ordinary chondrite parent bodies. . The Astrophysical Journal , 791, 120-131, https://doi.org/10.1088/0004-637X/791/2/120. | |
RELAB, , Reflectance Experiment Lab , catalogue of samples. |