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Sample SCV 28
NavDat sample number 12556 · ANDESITE
Sample
| Sample ID | SCV 28 |
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| Rock name | 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 | olivine-phyric andesite flow from the lower third of the andesite pile; matrix is holocrystalline intergranular with randomly oriented laths and sheaves of plagioclase and interstitial cpx, olivine, and oxide; most olivine phenocrysts are altered |
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Location
| Latitude | 43.2894 |
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| Longitude | -116.831 |
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| Location | Owyhee Mountains |
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| State / province | Idaho |
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| Volcanic field | Salmon Creek Volcanics |
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Age
| Age (Ma) | Error | Min | Max | Geologic age | Dated by |
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| 28.7 |
|
28.4 |
29 |
|
|
