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Sample 2
NavDat sample number 4644 · RHYOLITE
Sample
| Sample ID | 2 |
|---|
| Rock name | RHYOLITE |
|---|
| Rock type | VOLCANIC |
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| Composition | FELSIC |
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| Material | IGNEOUS |
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| Comment | well-banded; phenocrysts of oligoclase and biotite along with a few of quartz; groundmass of microfelsite with microliths swarms of feldspar |
|---|
Location
| Latitude | 39.1213 |
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| Longitude | -121.696 |
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| Location | from buried Colusa Buttes; obtained from Humble Well at depth of 9430 feet |
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| State / province | California |
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| Volcanic field | Sutter Buttes |
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Age
| Age (Ma) | Error | Min | Max | Geologic age | Dated by |
|---|
| 2.2 |
|
1.98 |
2.42 |
|
|
Analyses
No chemical analyses are stored for this sample.
