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Sample CH82-13
NavDat sample number 11438 · ANDESITE
Sample
| Sample ID | CH82-13 |
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| Rock name | ANDESITE |
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| Rock type | VOLCANIC |
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| Composition | INTERMEDIATE |
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| Material | IGNEOUS |
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| Comment | very fine grained, intergranular-intersertal matrix of plagioclase laths, cpx, opx w/ cpx rims, minor oxide, and fresh to altered glass; scattered, highly resorbed phenocrysts of plagioclase; matrix is altered in patches |
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Location
| Latitude | 41.5444 |
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| Longitude | -117.575 |
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| Location | flow along Big Cottonwood Creek, E side Santa Rosa Range; Humboldt County |
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| State / province | Nevada |
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Age
| Age (Ma) | Error | Min | Max | Geologic age | Dated by |
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| 19.6 |
|
18.7 |
20.5 |
|
|
