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Sample 644-3B
NavDat sample number 3081 · PYROCLASTIC-FLOW
Sample
| Sample ID | 644-3B |
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| Rock name | PYROCLASTIC-FLOW |
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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 | J.P. Albers and H.R. Cornwall, U.S. Geological Survey |
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| Comment | Youngest pre-ore unit in the Goldfield mining district. Silberman and Ashley 1970 report age of mineralization of 20.7+ - 0.4 m.y., from the K-Ar age of hypogene alunite. |
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Location
| Latitude | 37.6864 |
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| Longitude | -117.166 |
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| Location | Goldfield Hills |
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| State / province | Nevada |
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| Location comment | Esmeralda County, NV |
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Age
| Age (Ma) | Error | Min | Max | Geologic age | Dated by |
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| 21.7 |
|
19.53 |
23.87 |
|
|
Analyses
No chemical analyses are stored for this sample.
