Sample 831
NavDat sample number 53330 · RHYOLITE
Sample
| Sample ID | 831 |
|---|---|
| Rock name | RHYOLITE |
| Rock type | VOLCANIC |
| Composition | FELSIC |
| Material | IGNEOUS |
| Collected by | Donnelly-Nolan |
Location
| Latitude | 41.6433 |
|---|---|
| Longitude | -121.713 |
| 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 | 71.1 | WT% | XRF | |
| AL2O3 | 15.3 | WT% | XRF | |
| FEOT | 2.45 | WT% | XRF | |
| MGO | 0.6 | WT% | XRF | |
| CAO | 1.96 | WT% | XRF | |
| NA2O | 4.91 | WT% | XRF | |
| K2O | 3.04 | WT% | XRF | |
| TIO2 | 0.42 | WT% | XRF | |
| P2O5 | 0.12 | WT% | XRF | |
| MNO | 0.08 | WT% | XRF | |
| TOTAL | 98.97 | WT% | XRF | |
| LOI | 0.25 | WT% | XRF | |
| NA2O | 5.08 | WT% | FPHOT | |
| K2O | 3.06 | WT% | FPHOT | |
| FEOT | 0.16 | WT% | WET | |
| H2O_PLUS | 0.13 | WT% | WET | |
| H2O_MINUS | 0.02 | WT% | WET | |
| CO2 | 0.03 | WT% | WET | |
| RB | 78 | PPM | XRF | |
| SR | 263 | PPM | XRF | |
| Y | 28 | PPM | XRF | |
| ZR | 190 | PPM | XRF | |
| NB | 7 | PPM | XRF | |
| BA | 760 | PPM | XRF | |
| ZN | 49 | PPM | XRF | |
| SC | 5.7 | PPM | INAA | |
| CO | 1.9 | PPM | INAA | |
| ZN | 57 | PPM | INAA | |
| RB | 82 | PPM | INAA | |
| ZR | 181 | PPM | INAA | |
| SB | 0.34 | PPM | INAA | |
| CS | 2.24 | PPM | INAA | |
| BA | 796 | PPM | INAA | |
| LA | 23.4 | PPM | INAA | |
| CE | 42.8 | PPM | INAA | |
| ND | 22.1 | PPM | INAA | |
| SM | 4.54 | PPM | INAA | |
| EU | 0.931 | PPM | INAA | |
| GD | 4.4 | PPM | INAA | |
| TB | 0.75 | PPM | INAA | |
| TM | 0.37 | PPM | INAA | |
| YB | 2.86 | PPM | INAA | |
| LU | 0.412 | PPM | INAA | |
| HF | 5.06 | PPM | INAA | |
| TA | 0.72 | PPM | INAA | |
| TH | 8.27 | PPM | INAA | |
| U | 2.65 | PPM | INAA |