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Petrographic Descriptions (Select a sample)
| Sample No.: | RBT 04309 |
| Location: | Roberts Massif |
| Field No.: | 15148 |
| Dimensions (cm): | 1.75x1.0x0.5 |
| Weight (g): | 1.258 |
| Meteorite Type: | CM2 Chondrite |
Macroscopic Description: Kathleen McBride
100% of the exterior is covered with brown/black fusion crust with polygonal fractures. The interior is a black matrix with evaporites and dark chondrules.
Thin Section (,2) Description: Tim McCoy and Emma Bullock
The section consists of a few small chondrules (up to 0.5 mm), mineral grains and CAIs set in a black matrix; rare metal and sulfide grains are present. Olivine compositions are Fa1-50. The matrix consists pre-dominantly of an Fe-rich serpentine. The meteorite is a CM2 chondrite.
Thin Section Images
| Cross-Polarized Light | Plane-Polarized Light | Reflected Light |
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Lab Images
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