Sample s_USNM 115379-34
NavDat sample number 9251 · DACITE
Sample
| Sample ID | s_USNM 115379-34 |
|---|---|
| Rock name | DACITE |
| Rock type | VOLCANIC |
| Composition | FELSIC |
| Material | IGNEOUS |
| Comment | BLAST FACIES |
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 | 77.37 | WT% | EPMA | |
| TIO2 | 0.34 | WT% | EPMA | |
| AL2O3 | 11.73 | WT% | EPMA | |
| FEOT | 1.46 | WT% | EPMA | |
| CAO | 0.71 | WT% | EPMA | |
| MGO | 0.43 | WT% | EPMA | |
| K2O | 2.89 | WT% | EPMA | |
| NA2O | 3.55 | WT% | EPMA | |
| P2O5 | 0.19 | WT% | EPMA | |
| SIO2 | 68.99 | WT% | EPMA | |
| TIO2 | 0.51 | WT% | EPMA | |
| AL2O3 | 13.49 | WT% | EPMA | |
| FEOT | 2.68 | WT% | EPMA | |
| CAO | 1.72 | WT% | EPMA | |
| MGO | 0.76 | WT% | EPMA | |
| K2O | 2.22 | WT% | EPMA | |
| NA2O | 3.69 | WT% | EPMA | |
| SIO2 | 63.97 | WT% | XRF | |
| TIO2 | 0.61 | WT% | XRF | |
| AL2O3 | 17.56 | WT% | XRF | |
| FEOT | 4.11 | WT% | XRF | |
| CAO | 4.97 | WT% | XRF | |
| MGO | 1.89 | WT% | XRF | |
| MNO | 0.07 | WT% | XRF | |
| K2O | 1.27 | WT% | XRF | |
| NA2O | 4.67 | WT% | XRF | |
| P2O5 | 0.12 | WT% | XRF |