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Sample 81cc
NavDat sample number 37508 · BASALTIC-ANDESITE
Sample
| Sample ID | 81cc |
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| Rock name | BASALTIC-ANDESITE |
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| Rock type | VOLCANIC |
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| Composition | INTERMEDIATE |
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| Material | IGNEOUS |
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| Comment | rich in phenocrysts, consisting of olivine, augite, and bytownite; trachytic to pilotaxitic groundmass of plagioclase laths and microlites; this particular sample shows signs of extensive vesicle infilling with secondary calcite and silica |
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Location
| Latitude | 43.5567 |
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| Longitude | -110.601 |
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| Location | south side of bluff-like outcrop at mouth of Flat Creek canyon |
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| State / province | Wyoming |
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Age
| Age (Ma) | Error | Min | Max | Geologic age | Dated by |
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| 6 |
|
3 |
10 |
|
|
