Sample D85-208
NavDat sample number 18391 · TRACHYANDESITE
Sample
| Sample ID | D85-208 |
|---|---|
| Rock name | TRACHYANDESITE |
| Rock type | VOLCANIC |
| Composition | INTERMEDIATE |
| Material | IGNEOUS |
Location
| Latitude | 39.35 |
|---|---|
| Longitude | -120.017 |
| State / province | California |
| Volcanic field | Tahoe |
Age
| Age (Ma) | Error | Min | Max | Geologic age | Dated by |
|---|---|---|---|---|---|
| 2 | 1.8 | 2.2 |
Analyses
Whole rock
| Item | Value | Std. dev. | Unit | Method |
|---|---|---|---|---|
| SIO2 | 53.02 | WT% | XRF | |
| TIO2 | 1.54 | WT% | XRF | |
| AL2O3 | 16.95 | WT% | XRF | |
| FE2O3 | 7.63 | WT% | XRF | |
| MNO | 0.12 | WT% | XRF | |
| MGO | 6.81 | WT% | XRF | |
| CAO | 7.32 | WT% | XRF | |
| NA2O | 4.08 | WT% | XRF | |
| K2O | 2.25 | WT% | XRF | |
| P2O5 | 0.59 | WT% | XRF | |
| TOTAL | 100.31 | WT% | XRF | |
| BA | 1127 | PPM | XRF | |
| CO | 30 | PPM | XRF | |
| CR | 180 | PPM | XRF | |
| CU | 38 | PPM | XRF | |
| NB | 24 | PPM | XRF | |
| NI | 131 | PPM | XRF | |
| PB | 9 | PPM | XRF | |
| RB | 50 | PPM | XRF | |
| SR | 837 | PPM | XRF | |
| V | 155 | PPM | XRF | |
| Y | 20 | PPM | XRF | |
| ZN | 88 | PPM | XRF | |
| ZR | 254 | PPM | XRF |