Newsletter |
36,2 |
Location |
Larkman Nunatak |
Field Number |
23915 |
Dimensions (cm) |
25.0 x 20.0 x 15.0 |
Weight (g) |
10445.00 |
Original Classification |
Howardite |
Ferrosilite (mol%): 32-52 |
B |
B |
The exterior of this breccia has a coarse to fined grained texture with multiple types of clasts, ranging in color from white to dark gray. Approximately 40% of the exterior surface has brown/black fusion crust and visible shock veins. The interior looks the same as the exterior but is less weathered. |
The section shows a groundmass of comminuted pyroxene and plagioclase (up to 0.5 mm) with coarse-grained diogenitic clasts up to 5 mm. Groundmass is heavily shocked. Pyroxene compositions range from Fs32-52Wo2-25. No olivine grains were found. This section is from a large, very brecciated howardite and this description may not be representative of the whole (since compositions here are essentially eucritic). |
https://ares.jsc.nasa.gov/astromaterials3d/sample-details.htm?sample=LAR12326-32
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