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Sample YU-PZ345a
NavDat sample number 2974 · RHYOLITE
Sample
| Sample ID | YU-PZ345a |
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| Rock name | RHYOLITE |
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| Rock type | VOLCANIC |
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| Composition | FELSIC |
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| Material | IGNEOUS |
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| Collected by | Pansze, Arthur J |
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| Comment | dark reddish-brown; porphyritic with 40-50% phenocrysts of plagioclase, biotite, quartz, and sanidine, in a felsitic groundmass; flow brecciated |
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Location
| Latitude | 43.0028 |
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| Longitude | -116.751 |
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| Location | from a poorly exposed exogenous dome; in Long Gulch W of Silver City, Owyhee County |
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| State / province | Idaho |
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| Volcanic field | upper rhyolite unit |
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Age
| Age (Ma) | Error | Min | Max | Geologic age | Dated by |
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| 16 |
|
15.7 |
16.3 |
|
|
Analyses
No chemical analyses are stored for this sample.
