Sample Petrographic Description
Sample Number | LAR 12075 |
Newsletter | 38,2 |
Location | Larkman Nunatak |
Field Number | 22609 |
Dimensions (cm) | 3.2 x 2.1 x 1.4 |
Weight (g) | 20.96 |
Original Classification | LL3.8 Chondrite |
Mineral Composition (%Fa & %Fs) | |
Fayalite (mol%): 19-32;Ferrosilite (mol%): 13-34 | |
Weathering | |
A | |
Fracturing | |
A | |
Macroscopic Description - Mitchell Haller | |
Glossy black fusion crust covers 90% of the exterior surface. Yellow colored chondrules/inclusions are visible. The interior is a black matrix with mm sized white and gray chondrules/inclusions. | |
Thin Section Description (,2) - Cari Corrigan, Tim McCoy | |
The section exhibits numerous small, well-defined chondrules (up to 1 mm) in a matrix of fine-grained silicates, metal and troilite. Polysynthetically twinned pyroxene is abundant. The meteorite is extensively weathered. Silicates are unequilibrated; olivines range from Fa19-32 and pyroxenes from Fs13-34. The meteorite is an LL3 chondrite (estimated subtype 3.8) |
Antarctic Meteorite Images for Sample LAR 12075 | ||||
Lab Photo(s) : | ||||
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Antarctic Meteorite Images for Sample LAR 12075 | ||||
Thin Section Photo(s) : | ||||
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