Sample Petrographic Description
Sample Number | DOM 10490 |
Newsletter | 37,2 |
Location | Dominion Range |
Field Number | 21909 |
Dimensions (cm) | 6.0 x 3.25 x 3.25 |
Weight (g) | 115.90 |
Original Classification | LL3.2 Chondrite |
Mineral Composition (%Fa & %Fs) | |
Fayalite (mol%): 3-37;Ferrosilite (mol%): 15 | |
Weathering | |
B | |
Fracturing | |
A | |
Macroscopic Description - Kathleen McBride | |
The exterior of this ordinary chondrite has dark brown fusion crust. The interior is a rusty brown matrix with high metal content and chondrules and inclusions of various sizes and colors. | |
Thin Section Description (,2) - Cari Corrigan, Linda Welzenbach, Pamela Salyer | |
The section exhibits numerous, large, well-defined chondrules (up to 1 cm) in a black matrix of fine-grained silicates, troilite and rare metal. Polysynthetically twinned pyroxene is abundant. The meteorite is mildly weathered. Weak shock effects are present. Silicates are unequilibrated; olivines range from Fa3-37, with most grains clustered at Fa17 or Fa30, and pyroxenes from Fs15. The meteorite is an LL3 chondrite (estimated subtype 3.2). |
Antarctic Meteorite Images for Sample DOM 10490 | ||||
Lab Photo(s) : | ||||
Antarctic Meteorite Images for Sample DOM 10490 | ||||
Thin Section Photo(s) : | ||||
References for Sample DOM10490 | |
Li, Y., Rubin, A.E., and Weibiao, H., 2021, Formation of metallic-Cu-bearing mineral assemblages in type-3 ordinary and CO chondrites, American Mineralogist, 106, 1751–1767, https://doi.org/10.2138/am-2021-7689. | |
RELAB, , Reflectance Experiment Lab , catalogue of samples. |