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Sample DB5/88/4
NavDat sample number 83644
Sample
| Sample ID | DB5/88/4 |
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| Material | notfound |
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| Comment | Sample was taken from middle of basal rhyolite vitrophyre of Tiva Canyon Member. The vitrophyre, which is 30 ft thick here, has dark black rhyolitic fiamme in a dark, but somewhat lighter matrix. The flattening of pumices is only slight and the vitrophyre is only partially welded. The vitrophyre overlies 50 to 75 ft of nonwelded ash flow tuffs, which in turn overlie a thin plinian deposit, 0.3 m thick, and an orange, nonwelded ash flow tuff that appears to be older. The Tiva Canyon Member contains 5% phenocrysts at the sample site. The sample was collected upsection from the prototype test within Topopah Spring Tuff on the west face of Yucca Mountain. |
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Location
| Latitude | 36.8163 |
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| Longitude | -116.47 |
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| State / province | NEVADA |
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Age
| Age (Ma) | Error | Min | Max | Geologic age | Dated by |
|---|
| 12.745 |
|
12.75 |
12.74 |
|
|
Analyses
Whole Rock
| Item | Value | Std. dev. | Unit | Method |
|---|
| AL2O3 | 12.4 | | WT% | XRF |
| BAO | 630.141 | | PPM | XRF |
| BA | 564.4 | | PPM | XRF |
| CAO | 0.39 | | WT% | XRF |
| CR2O3 | | | PPM | XRF |
| CR | | | PPM | XRF |
| FE2O3 | 1.005 | | WT% | XRF |
| K2O | 4.895 | | WT% | XRF |
| MGO | 0.115 | | WT% | XRF |
| MNO | 0.1291 | | WT% | XRF |
| MN | 0.1 | | WT% | XRF |
| NA2O | 3.545 | | WT% | XRF |
| NB2O5 | | | PPM | XRF |
| NIO | | | PPM | XRF |
| NI | | | PPM | XRF |
| P2O5 | 0 | | WT% | XRF |
| RB2O | 220.686 | | PPM | XRF |
| SIO2 | 73.16 | | WT% | XRF |
| SRO | 39.1556 | | PPM | XRF |
| TIO2 | 0.14 | | WT% | XRF |
| TOTAL | 95.86 | | WT% | XRF |
| V2O3 | | | PPM | XRF |
| Y2O3 | 47.5708 | | PPM | XRF |
| ZNO | 100.71 | | PPM | XRF |
| ZN | 80.91 | | PPM | XRF |
| ZRO2 | 354.855 | | PPM | XRF |
| ZR | 262.7 | | PPM | XRF |
