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Sample USGSM-856-10
NavDat sample number 2895 · RHYODACITE
Sample
| Sample ID | USGSM-856-10 |
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| Rock name | RHYODACITE |
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| Rock type | VOLCANIC |
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| Composition | FELSIC |
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| Material | IGNEOUS |
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| Comment | Light-gray porphyritic rhyodacite, with phenocrysts of plagioclase, biotite, and hornblende in an aphanitic groundmass. The tuff breccia was so badly altered within the mining district that none was suitable for dating. This plug occupies one of the vents from which the tuff breccia was erupted and is similar in mineralogy to the tuff breccia. |
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Location
| Latitude | 38.2022 |
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| Longitude | -119.029 |
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| Location | Mono County, CA |
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| State / province | California |
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| Volcanic field | Bodie Mining District and Bodie Hills Volcanic Field |
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| Location comment | 1 mi SW of Bodie townsite |
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Age
| Age (Ma) | Error | Min | Max | Geologic age | Dated by |
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| 9.1 |
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8.9 |
9.3 |
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Analyses
No chemical analyses are stored for this sample.
