Sample PR-G
NavDat sample number 33789 · RHYOLITE
Sample
| Sample ID | PR-G |
|---|---|
| Rock name | RHYOLITE |
| Rock type | VOLCANIC |
| Composition | FELSIC |
| Material | IGNEOUS |
| Comment | slightly phyric; approximately20% consists of lithophysal cavities and spherulites; opal fills fractures and cavities; some sanidine |
Location
| Latitude | 43.8315 |
|---|---|
| Longitude | -116.324 |
| 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 | 78.02 | WT% | XRF | |
| AL2O3 | 11.75 | WT% | XRF | |
| FEOT | 1.14 | WT% | XRF | |
| MNO | 0.01 | WT% | XRF | |
| MGO | 0 | WT% | XRF | |
| CAO | 0.4 | WT% | XRF | |
| K2O | 4.71 | WT% | XRF | |
| NA2O | 3.47 | WT% | XRF | |
| TIO2 | 0.108 | WT% | XRF | |
| P2O5 | 0.251 | WT% | XRF | |
| LOI | 0.14 | WT% | XRF | |
| TOTAL | 99.86 | WT% | XRF | |
| NI | 9 | PPM | XRF | |
| CR | 0 | PPM | XRF | |
| SC | 0 | PPM | XRF | |
| V | 3 | PPM | XRF | |
| BA | 349 | PPM | XRF | |
| RB | 125 | PPM | XRF | |
| SR | 21 | PPM | XRF | |
| ZR | 192 | PPM | XRF | |
| Y | 35 | PPM | XRF | |
| NB | 43 | PPM | XRF | |
| GA | 18 | PPM | XRF | |
| CU | 6 | PPM | XRF | |
| ZN | 40 | PPM | XRF | |
| PB | 25 | PPM | XRF | |
| TH | 15 | PPM | XRF | |
| LA | 70 | PPM | XRF | |
| CE | 137 | PPM | XRF |