Sample s_115415
NavDat sample number 9260 · RHYOLITE
Sample
| Sample ID | s_115415 |
|---|---|
| Rock name | RHYOLITE |
| Rock type | VOLCANIC |
| Composition | FELSIC |
| Material | IGNEOUS |
| Comment | PUMICE, TRANSIENT DOME PHASE |
Location
| Latitude | 46.2 |
|---|---|
| Longitude | -122.18 |
| Location | CASCADES / HIGH CASCADES / NORTHWESTERN CASCADES / MOUNT ST. HELENS / PACIFIC OCEAN |
| State / province | WASHINGTON |
Age
| Age (Ma) | Error | Min | Max | Geologic age | Dated by |
|---|---|---|---|---|---|
| -0.00198 | 0 | -0.002178 |
Analyses
Whole rock
| Item | Value | Std. dev. | Unit | Method |
|---|---|---|---|---|
| SIO2 | 77.69 | WT% | EPMA | |
| TIO2 | 0.36 | WT% | EPMA | |
| AL2O3 | 11.76 | WT% | EPMA | |
| FEOT | 1.4 | WT% | EPMA | |
| CAO | 0.79 | WT% | EPMA | |
| MGO | 0.11 | WT% | EPMA | |
| K2O | 3.17 | WT% | EPMA | |
| NA2O | 3.29 | WT% | EPMA | |
| P2O5 | 0.09 | WT% | EPMA | |
| SIO2 | 74.48 | WT% | EPMA | |
| TIO2 | 0.49 | WT% | EPMA | |
| AL2O3 | 11.14 | WT% | EPMA | |
| FEOT | 2.43 | WT% | EPMA | |
| CAO | 0.93 | WT% | EPMA | |
| MGO | 0.52 | WT% | EPMA | |
| K2O | 2.91 | WT% | EPMA | |
| NA2O | 4.02 | WT% | EPMA | |
| SIO2 | 60.46 | WT% | XRF | |
| TIO2 | 0.71 | WT% | XRF | |
| AL2O3 | 18.6 | WT% | XRF | |
| FEOT | 4.7 | WT% | XRF | |
| CAO | 6.4 | WT% | XRF | |
| MGO | 2.64 | WT% | XRF | |
| K2O | 1.01 | WT% | XRF | |
| NA2O | 4.93 | WT% | XRF | |
| P2O5 | 0.13 | WT% | XRF |