Petrographic Descriptions (Select a sample)
Antarctic Meteorite Newsletter 31,1 - Petrographic Descriptions
| Sample No.: | GRA 06158 |
| Location: | Graves Nunataks |
| Field No.: | 17726 |
| Dimensions (cm): | 1.25 x 1.0 x 0.75 |
| Weight (g): | 1.333 |
| Meteorite Type: | CM2 Chondrite |
| Pairing: |
Macroscopic Description: Kathleen McBride
75% of the exterior is a rough black fusion crust. The interior is a brown/black matrix with an oxidation rind.
Thin Section (,2) Description: Tim McCoy, Linda Welzenbach and Cari Corrigan
The section consists of abundant small chondrules (up to 2 mm), chondrule fragments, mineral grains and CAI’s set in a black matrix; rare metal and sulfide grains are present. Olivine compositions are Fa1-23 and orthopyroxene is Fs3-4. The matrix consists dominantly of an Fe-rich serpentine. The meteorite is a CM2 chondrite.
Thin Section Images
| Plane-Polarized Light GRA 06158 |
Cross-Polarized Light GRA 06158 |
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Lab Images
| North View GRA 06158 |
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