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Sample Y-B1-17
NavDat sample number 2908 · BASALT
Sample
| Sample ID | Y-B1-17 |
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| Rock name | BASALT |
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| Rock type | VOLCANIC |
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| Composition | MAFIC |
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| Material | IGNEOUS |
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| Collected by | Charles J. Vitaliano |
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| Comment | A black vesicular rock with very large phenocrysts of plagioclase 68% of the rock. In this section, pyroxene and olivine microphenocrysts are also visible. The zoned plagioclase An46-79 phenocrysts are up to 7.8 mm long and contain poicilitic inclusions of augite, titanaugite, and iddingsitized olivine microlites and occasional grains of phlogopite and magnetite. The exceedingly fine grained groundmass is trachytic and consists of plagioclase, euhedral diopside, and granular olivine iddingsitized, with magnetite, hematite, and scattered grains of apatite and phlogopite. A small amount of secondary carbonate is present in the groundmass. See Y-B1-1. |
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Location
| Latitude | 37.6958 |
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| Longitude | -117.246 |
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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 | Malpais Basalt, base of the uppermost flow; mesa above Pozo Canyon; about 24 m above, and about 65 m W of Y-B1-2 |
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Age
| Age (Ma) | Error | Min | Max | Geologic age | Dated by |
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| 8.2 |
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6.2 |
10.2 |
|
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Analyses
No chemical analyses are stored for this sample.
