Sample Petrographic Description
| Sample Number | DOM 03287 |
| Newsletter | 28,1 |
| Location | Dominion Range |
| Field Number | 14324 |
| Dimensions (cm) | 3.0 x 2.25 x 2.0 |
| Weight (g) | 20.24 |
| Original Classification | L3 Chondrite |
| Updated Classification | L3.7 Chondrite |
| Mineral Composition (%Fa & %Fs) | |
| Fayalite (mol%): 15-29;Ferrosilite (mol%): 6-24 | |
| Weathering | |
| B | |
| Fracturing | |
| A/B | |
| Macroscopic Description - Kathleen McBride | |
| 90% of the exterior has brown/black fusion crust with oxidation haloes and polygonal fractures. The interior is dark gray with high metal content and gray and rusty chondrules 1-2 mm sized. | |
| Thin Section Description (,2) - Linda Welzenbach, Tim McCoy | |
| The section exhibits numerous small, well-defined chondrules (up to 3 mm) in a black matrix of fine-grained silicates, metal and troilite. Weak shock effects are present. Polysynthetically twinned pyroxene is extremely abundant. The meteorite is highly weathered. Silicates are unequilibrated; olivines range from Fa15-29 and pyroxenes from Fs6-24. The meteorites are L3 chondrites (estimated subtype 3.7). | |
| Reclassification Notes (AMN 28,1) | |
| Classification updated to L3.7, as announced in AMN 28, no. 1 | |
| Antarctic Meteorite Images for Sample DOM 03287 | ||||
| Field Photo(s) : | ||||
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| Field photo image(s) courtesy of the ANSMET (ANtarctic Search for METeorites) Program, Case Western Reserve University and the University of Utah | ||||
| Antarctic Meteorite Images for Sample DOM 03287 | ||||
| Lab Photo(s) : | ||||
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| References for Sample DOM03287 | |
| Eschrig, J., Bonal, L., Beck, P., Prestgard, T.J., 2021, Spectral reflectance analysis of type 3 carbonaceous chondrites and search for their asteroidal parent bodies. Icarus, 354, 114034, https://doi.org/10.1016/j.icarus.2020.114034. | |
| 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. | |