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Sample Y-5813
NavDat sample number 2915 · ANDESITE
Sample
| Sample ID | Y-5813 |
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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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| Collected by | Charles J. Vitaliano |
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| Comment | A remarkably fresh, black, fine-grained, meagerly porphyritic rock consisting of plagioclase An52, olivine, and pigeonite phenocrysts in a groundmass of the same minerals plus abundant iron oxide magnetite? and accessory apatite and phlogopite. The plagioclase phenocrysts are slightly altered to clay. See Y-58441. |
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Location
| Latitude | 37.7861 |
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| Longitude | -117.211 |
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| Location | Esmeralda County, NV |
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| State / province | Nevada |
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| Volcanic field | Goldfield-Tonopah region, West-Central Nevada |
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| Location comment | Pigeonite-labradorite andesite; low knoll 2 mi N of Kendall Mountain |
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Age
| Age (Ma) | Error | Min | Max | Geologic age | Dated by |
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| 13.9 |
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10.9 |
16.9 |
|
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Analyses
No chemical analyses are stored for this sample.
