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Sample USGS-D2464S , USGS-D2464B
NavDat sample number 4968 · TUFF
Sample
| Sample ID | USGS-D2464S , USGS-D2464B |
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| Rock name | TUFF |
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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 | A.H. Cogbill, Northwestern Univ. |
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| Comment | Crystal tuff, tuff of Pilot Mountains. Strongly compacted ash-flow tuff with crystals of quartz 20%, feldspar 25%, and biotite 5% in a totally devitrified ash-pumice matrix. |
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Location
| Latitude | 38.4056 |
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| Longitude | -117.992 |
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| Location | Mineral County |
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| State / province | Nevada |
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| Volcanic field | Mina-Candelaria Region |
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| Location comment | 10 km ENE of Mina |
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Age
| Age (Ma) | Error | Min | Max | Geologic age | Dated by |
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| 26.3 |
|
25.9 |
26.7 |
|
R.F. Marvin, H.H. Mehnert, and V.M. Merritt, U.S. Geological Survey |
Analyses
No chemical analyses are stored for this sample.
