Sample 18
NavDat sample number 54605 · TUFF
Sample
| Sample ID | 18 |
|---|---|
| Rock name | TUFF |
| Rock type | VOLCANIC |
| Composition | FELSIC |
| Material | IGNEOUS |
Location
| Latitude | 38.2983 |
|---|---|
| Longitude | -120.702 |
| State / province | California |
| Location comment | Tuff of Chili Gulch |
Age
| Age (Ma) | Error | Min | Max | Geologic age | Dated by |
|---|---|---|---|---|---|
| 19.91 | 19.21 | 20.61 |
Analyses
Whole rock
| Item | Value | Std. dev. | Unit | Method |
|---|---|---|---|---|
| SIO2 | 77.47 | WT% | XRF | |
| TIO2 | 0.15 | WT% | XRF | |
| AL2O3 | 11.46 | WT% | XRF | |
| FEO | 0.99 | WT% | XRF | |
| MNO | 0.02 | WT% | XRF | |
| MGO | -0.38 | WT% | XRF | |
| CAO | 0.33 | WT% | XRF | |
| NA2O | 3.8 | WT% | XRF | |
| K2O | 4.32 | WT% | XRF | |
| P2O5 | -0.08 | WT% | XRF | |
| CU | 14 | PPM | XRF | |
| ZN | 68 | PPM | XRF | |
| GA | 17 | PPM | XRF | |
| RB | 191 | PPM | XRF | |
| SR | 26 | PPM | XRF | |
| Y | 38 | PPM | XRF | |
| ZR | 330 | PPM | XRF | |
| NB | 29 | PPM | XRF | |
| CS | -5 | PPM | XRF | |
| BA | 91 | PPM | XRF | |
| PB | 28 | PPM | XRF | |
| TH | 29 | PPM | XRF | |
| LA | 68 | PPM | XRF | |
| CE | 85 | PPM | XRF | |
| PR | 14 | PPM | XRF | |
| ND | 49 | PPM | XRF | |
| SM | -8 | PPM | XRF |