Sample 1917
NavDat sample number 53352 · TRACHYTE
Sample
| Sample ID | 1917 |
|---|---|
| Rock name | TRACHYTE |
| Rock type | VOLCANIC |
| Composition | INTERMEDIATE |
| Material | IGNEOUS |
| Collected by | Donnelly-Nolan |
Location
| Latitude | 41.7722 |
|---|---|
| Longitude | -121.77 |
| State / province | California |
| Volcanic field | Medicine Lake |
Age
| Age (Ma) | Error | Min | Max | Geologic age | Dated by |
|---|---|---|---|---|---|
| 1.81 | 0.583 | 3.04 |
Analyses
Whole Rock
| Item | Value | Std. dev. | Unit | Method |
|---|---|---|---|---|
| SIO2 | 71.2 | WT% | XRF | |
| AL2O3 | 15.3 | WT% | XRF | |
| FEOT | 2.63 | WT% | XRF | |
| MGO | 0.69 | WT% | XRF | |
| CAO | 2.12 | WT% | XRF | |
| NA2O | 4.02 | WT% | XRF | |
| K2O | 3.33 | WT% | XRF | |
| TIO2 | 0.46 | WT% | XRF | |
| P2O5 | 0.17 | WT% | XRF | |
| MNO | 0.09 | WT% | XRF | |
| TOTAL | 95.67 | WT% | XRF | |
| LOI | 4.15 | WT% | XRF | |
| RB | 74 | PPM | XRF | |
| SR | 283 | PPM | XRF | |
| Y | 27 | PPM | XRF | |
| ZR | 195 | PPM | XRF | |
| NB | 8 | PPM | XRF | |
| BA | 737 | PPM | XRF | |
| NI | 9 | PPM | XRF | |
| CU | 14 | PPM | XRF | |
| ZN | 59 | PPM | XRF |