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Sample 8
NavDat sample number 4650 · RHYOLITE
Sample
| Sample ID | 8 |
|---|
| 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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| Comment | well-banded; phenocrysts of oligoclase and biotite along with a few of quartz; groundmass of microfelsite with microliths swarms of feldspar |
|---|
Location
| Latitude | 39.1924 |
|---|
| Longitude | -121.777 |
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| Location | from De Witt's Quarry; about 2.5 miles NW of Sutter City |
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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 |
|---|
| 1.69 |
|
1.521 |
1.859 |
|
|
Analyses
No chemical analyses are stored for this sample.
