Sample s_USNM 115379-37
NavDat sample number 9250 · DACITE
Sample
| Sample ID | s_USNM 115379-37 |
|---|---|
| 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 | 79.6 | WT% | EPMA | |
| TIO2 | 0.32 | WT% | EPMA | |
| AL2O3 | 11.76 | WT% | EPMA | |
| FEOT | 1.39 | WT% | EPMA | |
| CAO | 0.42 | WT% | EPMA | |
| MGO | 0.15 | WT% | EPMA | |
| K2O | 3.24 | WT% | EPMA | |
| NA2O | 2.55 | WT% | EPMA | |
| P2O5 | 0.12 | WT% | EPMA | |
| SIO2 | 73.64 | WT% | EPMA | |
| TIO2 | 0.47 | WT% | EPMA | |
| AL2O3 | 10.97 | WT% | EPMA | |
| FEOT | 2.54 | WT% | EPMA | |
| CAO | 0.77 | WT% | EPMA | |
| MGO | 0.68 | WT% | EPMA | |
| K2O | 2.91 | WT% | EPMA | |
| NA2O | 3.44 | WT% | EPMA | |
| P2O5 | 0.1 | WT% | EPMA | |
| SIO2 | 64.26 | WT% | XRF | |
| TIO2 | 0.53 | WT% | XRF | |
| AL2O3 | 17.51 | WT% | XRF | |
| FEOT | 3.9 | WT% | XRF | |
| CAO | 4.79 | WT% | XRF | |
| MGO | 1.81 | WT% | XRF | |
| K2O | 1.28 | WT% | XRF | |
| NA2O | 4.68 | WT% | XRF | |
| P2O5 | 0.1 | WT% | XRF |