Sample 28A
NavDat sample number 54609 · TUFF
Sample
| Sample ID | 28A |
|---|---|
| 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 | 77.23 | WT% | XRF | |
| TIO2 | 0.16 | WT% | XRF | |
| AL2O3 | 12.38 | WT% | XRF | |
| FEO | 0.98 | WT% | XRF | |
| MNO | 0.02 | WT% | XRF | |
| MGO | -0.38 | WT% | XRF | |
| CAO | 0.3 | WT% | XRF | |
| NA2O | 4 | WT% | XRF | |
| K2O | 4.55 | WT% | XRF | |
| P2O5 | -0.08 | WT% | XRF | |
| CU | -5 | PPM | XRF | |
| ZN | 66 | PPM | XRF | |
| GA | 20 | PPM | XRF | |
| RB | 213 | PPM | XRF | |
| SR | 20 | PPM | XRF | |
| Y | 45 | PPM | XRF | |
| ZR | 358 | PPM | XRF | |
| NB | 32 | PPM | XRF | |
| CS | 5 | PPM | XRF | |
| BA | 76 | PPM | XRF | |
| PB | 30 | PPM | XRF | |
| TH | 27 | PPM | XRF | |
| LA | 69 | PPM | XRF | |
| CE | 118 | PPM | XRF | |
| PR | 21 | PPM | XRF | |
| ND | 60 | PPM | XRF | |
| SM | -8 | PPM | XRF |