Sample Petrographic Description
| Sample Number | LAR 06674 |
| Newsletter | 32,2 |
| Location | Larkman Nunatak |
| Field Number | 19567 |
| Dimensions (cm) | 4.0 x 2.5 x 2.0 |
| Weight (g) | 31.24 |
| Original Classification | LL3.8 Chondrite |
| Pairing | LAR 06279; LAR 06283; LAR 06301; LAR 06320; LAR 06343; LAR 06469; LAR 06674; LAR 06772; LAR 06774; LAR 12034; LAR 12075; LAR 12078; LAR 12180; LAR 12203; |
| Mineral Composition (%Fa & %Fs) | |
| Fayalite (mol%): 14-33;Ferrosilite (mol%): 14-2 | |
| Weathering | |
| B | |
| Fracturing | |
| B | |
| Macroscopic Description - Kathleen McBride, Cecilia Satterwhite | |
| The exteriors have brown/black fusion crust with oxidation haloes and chondrules/inclusions visible. Areas without fusion crust are a rusty orange brown. The interiors are rusty black with abundant white/gray/weathered inclusions/chondrules and metal. | |
| Thin Section Description (,2) - Cari Corrigan, Tim McCoy, Linda Welzenbach | |
| The sections exhibit numerous large, well-defined chondrules (up to 1.5 mm) and occasional melt clasts in a matrix of fine-grained silicates, metal and troilite. Weak shock effects are present. Polysynthetically twinned pyroxene is abundant. Silicates are unequilibrated; olivines range from Fa11-33 and pyroxenes from Fs6-34. The meteorites are LL3 chondrites (estimated subtype 3.8). | |
| Notes | |
| There are 14 LL3.8 chondrites that were recovered from a small area within the LAR dense collection area. These were announced in earlier newsletters and were not all paired with each other. Inspection of the field map for all these samples indicates they were recovered within 1 km of each other, and likely all paired together. Since they were classified and announced in small batches and over an 8 year period, they were not recognized as pairs until some time had passed. These include LAR from the 06 season 279, 283, 301, 320, 343, 469, 674, 772, 774, and from the 12 season 034, 075, 078, 180 and 203. | |
| Antarctic Meteorite Images for Sample LAR 06674 | ||||
| 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 LAR 06674 | ||||
| Thin Section Photo(s) : | ||||
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