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Sample 631
NavDat sample number 88034 · RHYODACITE
Sample
| Sample ID | 631 |
|---|
| Rock name | RHYODACITE |
|---|
| Rock type | VOLCANIC |
|---|
| Composition | FELSIC |
|---|
| Material | IGNEOUS |
|---|
| Collected by | Hildreth and others |
|---|
| Comment | small lava remnants, mostly glassy, including proximal fused-breccia facies |
|---|
Location
| Latitude | 48.8494 |
|---|
| Longitude | -121.717 |
|---|
| Location | Iceberg Lake |
|---|
| State / province | Washington |
|---|
Age
| Age (Ma) | Error | Min | Max | Geologic age | Dated by |
|---|
| 1.063 |
|
1.051 |
1.075 |
|
|
Analyses
Whole rock
| Item | Value | Std. dev. | Unit | Method |
|---|
| SIO2 | 73.3 | | WT% | XRF |
| TIO2 | 0.34 | | WT% | XRF |
| AL2O3 | 14.76 | | WT% | XRF |
| FEOT | 1.37 | | WT% | XRF |
| MNO | 0.03 | | WT% | XRF |
| MGO | 0.16 | | WT% | XRF |
| CAO | 1.34 | | WT% | XRF |
| NA2O | 4.86 | | WT% | XRF |
| K2O | 3.36 | | WT% | XRF |
| P2O5 | 0.1 | | WT% | XRF |
| LOI | 0.46 | | WT% | XRF |
| TOTAL | 98.61 | | WT% | XRF |
| RB | 62 | | PPM | XRF |
| SR | 170 | | PPM | XRF |
| Y | 17 | | PPM | XRF |
| ZR | 237 | | PPM | XRF |
| BA | 1100 | | PPM | XRF |
