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Petrographic Descriptions (Select a sample)
| Sample No.: | LAP 04838 |
| Location: | LaPaz Ice Field |
| Field No.: | 17167 |
| Dimensions (cm): | 6.5x6.0x4.5 |
| Weight (g): | 323.5 |
| Meteorite Type: | Howardite |
Macroscopic Description: Kathleen McBride
90% of the exterior has thick, shiny black fusion crust with a ropy texture. Several vugs are present. The interior is a light gray matrix with numerous clasts of various sizes and colors.
Thin Section (,2) Description: Tim McCoy and Valerie Reynolds
The section shows a groundmass of comminuted pyroxene and plagioclase (up to 0.5 mm) with coarse-grained basaltic clasts, isolated mineral grains and impact-produced glass spherules and clasts. Pyroxene exhibits a broad range of compositions (Fs23-54Wo3-36) and plagioclase of An89. The Fe/Mn ratio of the pyroxene is ~30. The meteorite is a howardite.
Thin Section Images
| Cross-Polarized Light | Plane-Polarized Light |
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Lab Images
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