← Search
Sample n627
NavDat sample number 88021 · RHYODACITE
Sample
| Sample ID | n627 |
|---|
| Rock name | RHYODACITE |
|---|
| Rock type | VOLCANIC |
|---|
| Composition | FELSIC |
|---|
| Material | IGNEOUS |
|---|
| Collected by | Hildreth and others |
|---|
| Comment | NNW-trending dikes |
|---|
Location
| Latitude | 48.846 |
|---|
| Longitude | -121.821 |
|---|
| Location | Cougar Divide |
|---|
| State / province | Washington |
|---|
Age
| Age (Ma) | Error | Min | Max | Geologic age | Dated by |
|---|
| 1.293 |
|
1.277 |
1.309 |
|
|
Analyses
Whole rock
| Item | Value | Std. dev. | Unit | Method |
|---|
| SIO2 | 69.8 | | WT% | XRF |
| TIO2 | 0.56 | | WT% | XRF |
| AL2O3 | 15.95 | | WT% | XRF |
| FEOT | 2.81 | | WT% | XRF |
| MNO | 0.03 | | WT% | XRF |
| MGO | 0.41 | | WT% | XRF |
| CAO | 2.29 | | WT% | XRF |
| NA2O | 4.89 | | WT% | XRF |
| K2O | 2.72 | | WT% | XRF |
| P2O5 | 0.15 | | WT% | XRF |
| LOI | 1.84 | | WT% | XRF |
| TOTAL | 97.67 | | WT% | XRF |
| RB | 46 | | PPM | XRF |
| SR | 314 | | PPM | XRF |
| Y | 19 | | PPM | XRF |
| ZR | 257 | | PPM | XRF |
| BA | 957 | | PPM | XRF |
