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Sample P-4
NavDat sample number 67155 · RHYOLITE
Sample
| Sample ID | P-4 |
|---|
| Rock name | RHYOLITE |
|---|
| Rock type | PLUTONIC |
|---|
| Composition | FELSIC |
|---|
| Material | IGNEOUS |
|---|
Location
| Latitude | 39.08 |
|---|
| Longitude | -106.58 |
|---|
| Location | grizzly peak cauldron |
|---|
| State / province | COLORADO |
|---|
| Formation | Post-resurgent intrusions of Grizzly Peak Cauldron |
|---|
Age
| Age (Ma) | Error | Min | Max | Geologic age | Dated by |
|---|
| 33 |
|
29.7 |
36.3 |
|
|
Analyses
Whole rock
| Item | Value | Std. dev. | Unit | Method |
|---|
| SIO2 | 72.9 | | WT% | XRF |
| AL2O3 | 13 | | WT% | XRF |
| FE2O3 | 1.29 | | WT% | XRF |
| MGO | 0.37 | | WT% | XRF |
| CAO | 1.2 | | WT% | XRF |
| NA2O | 2.83 | | WT% | XRF |
| K2O | 4.73 | | WT% | XRF |
| TIO2 | 0.17 | | WT% | XRF |
| P2O5 | 0.06 | | WT% | XRF |
| MNO | 0.05 | | WT% | XRF |
