Sample PR-A
NavDat sample number 33783 · RHYOLITE
Sample
| Sample ID | PR-A |
|---|---|
| Rock name | RHYOLITE |
| Rock type | VOLCANIC |
| Composition | FELSIC |
| Material | IGNEOUS |
| Comment | slightly phyric; outcrop contains lavender layers of lithophysal cavities filled with vapor phase quartz separated by brown to lavender flow banded rhyolite; some sanidine present |
Location
| Latitude | 43.835 |
|---|---|
| Longitude | -116.316 |
| State / province | Idaho |
| Volcanic field | Willow Creek Rhyolite |
Age
| Age (Ma) | Error | Min | Max | Geologic age | Dated by |
|---|---|---|---|---|---|
| 11.3 | 11 | 11.6 |
Analyses
Whole rock
| Item | Value | Std. dev. | Unit | Method |
|---|---|---|---|---|
| SIO2 | 77.7 | WT% | XRF | |
| AL2O3 | 12.5 | WT% | XRF | |
| FEOT | 0.91 | WT% | XRF | |
| MNO | 0.015 | WT% | XRF | |
| MGO | 0 | WT% | XRF | |
| CAO | 0.42 | WT% | XRF | |
| K2O | 4.99 | WT% | XRF | |
| NA2O | 3.87 | WT% | XRF | |
| TIO2 | 0.109 | WT% | XRF | |
| P2O5 | 0.021 | WT% | XRF | |
| TOTAL | 100.54 | WT% | XRF | |
| NI | 10 | PPM | XRF | |
| CR | 0 | PPM | XRF | |
| SC | 3 | PPM | XRF | |
| V | 0 | PPM | XRF | |
| BA | 334 | PPM | XRF | |
| RB | 134 | PPM | XRF | |
| SR | 22 | PPM | XRF | |
| ZR | 187 | PPM | XRF | |
| Y | 42 | PPM | XRF | |
| NB | 45 | PPM | XRF | |
| GA | 21 | PPM | XRF | |
| CU | 3 | PPM | XRF | |
| ZN | 39 | PPM | XRF | |
| PB | 28 | PPM | XRF | |
| TH | 15 | PPM | XRF | |
| LA | 79 | PPM | XRF | |
| CE | 135 | PPM | XRF |