Sample PR-77
NavDat sample number 47824 · TRACHYANDESITE
Sample
| Sample ID | PR-77 |
|---|---|
| Rock name | TRACHYANDESITE |
| Rock type | VOLCANIC |
| Composition | INTERMEDIATE |
| Material | IGNEOUS |
| Collected by | John Bush |
| Comment | flow |
Location
| Latitude | 46.8883 |
|---|---|
| Longitude | -116.81 |
| State / province | Idaho |
| Volcanic field | Potlatch volcanics |
Age
| Age (Ma) | Error | Min | Max | Geologic age | Dated by |
|---|---|---|---|---|---|
| 28.75 | 23.8 | 33.7 | Oligocene |
Analyses
Whole rock
| Item | Value | Std. dev. | Unit | Method |
|---|---|---|---|---|
| SIO2 | 51.45 | WT% | XRF | |
| TIO2 | 4.6 | WT% | XRF | |
| AL2O3 | 20.14 | WT% | XRF | |
| FEO | 5.88 | WT% | XRF | |
| MNO | 0.06 | WT% | XRF | |
| MGO | 1.07 | WT% | XRF | |
| CAO | 7.26 | WT% | XRF | |
| NA2O | 4.29 | WT% | XRF | |
| K2O | 2.08 | WT% | XRF | |
| P2O5 | 0.88 | WT% | XRF | |
| NI | 7 | PPM | XRF | |
| CR | 22 | PPM | XRF | |
| SC | 27 | PPM | XRF | |
| V | 248 | PPM | XRF | |
| BA | 664 | PPM | XRF | |
| RB | 31 | PPM | XRF | |
| SR | 716 | PPM | XRF | |
| ZR | 368 | PPM | XRF | |
| Y | 46 | PPM | XRF | |
| NB | 65 | PPM | XRF | |
| GA | 36 | PPM | XRF | |
| CU | 5 | PPM | XRF | |
| ZN | 294 | PPM | XRF | |
| PB | 1 | PPM | XRF | |
| LA | 53 | PPM | XRF | |
| CE | 112 | PPM | XRF | |
| TH | 5 | PPM | XRF |