Sample D85-207
NavDat sample number 18390 · TRACHYANDESITE
Sample
| Sample ID | D85-207 |
|---|---|
| Rock name | TRACHYANDESITE |
| Rock type | VOLCANIC |
| Composition | INTERMEDIATE |
| Material | IGNEOUS |
Location
| Latitude | 39.3667 |
|---|---|
| Longitude | -120.083 |
| 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 | 55.69 | WT% | XRF | |
| TIO2 | 1.44 | WT% | XRF | |
| AL2O3 | 17.27 | WT% | XRF | |
| FE2O3 | 6.2 | WT% | XRF | |
| MNO | 0.1 | WT% | XRF | |
| MGO | 5.22 | WT% | XRF | |
| CAO | 6.07 | WT% | XRF | |
| NA2O | 4.15 | WT% | XRF | |
| K2O | 3.08 | WT% | XRF | |
| P2O5 | 0.58 | WT% | XRF | |
| TOTAL | 99.8 | WT% | XRF | |
| BA | 1435 | PPM | XRF | |
| CO | 23 | PPM | XRF | |
| CR | 90 | PPM | XRF | |
| CU | 49 | PPM | XRF | |
| NB | 27 | PPM | XRF | |
| NI | 81 | PPM | XRF | |
| PB | 7 | PPM | XRF | |
| RB | 70 | PPM | XRF | |
| SR | 835 | PPM | XRF | |
| V | 121 | PPM | XRF | |
| Y | 20 | PPM | XRF | |
| ZN | 77 | PPM | XRF | |
| ZR | 288 | PPM | XRF |