Sample 256
NavDat sample number 52831 · RHYOLITE
Sample
| Sample ID | 256 |
|---|---|
| Rock name | RHYOLITE |
| Rock type | VOLCANIC |
| Composition | FELSIC |
| Material | IGNEOUS |
| Collected by | Donnelly-Nolan |
Location
| Latitude | 41.6417 |
|---|---|
| Longitude | -121.41 |
| State / province | California |
| Volcanic field | Medicine Lake |
Age
| Age (Ma) | Error | Min | Max | Geologic age | Dated by |
|---|---|---|---|---|---|
| 0.313 | 0.029 | 0.549 |
Analyses
Whole Rock
| Item | Value | Std. dev. | Unit | Method |
|---|---|---|---|---|
| SIO2 | 75 | WT% | XRF | |
| AL2O3 | 13.5 | WT% | XRF | |
| FEOT | 1.38 | WT% | XRF | |
| MGO | 0.36 | WT% | XRF | |
| CAO | 0.91 | WT% | XRF | |
| NA2O | 3.82 | WT% | XRF | |
| K2O | 4.8 | WT% | XRF | |
| TIO2 | 0.24 | WT% | XRF | |
| P2O5 | 0 | WT% | XRF | |
| MNO | 0.03 | WT% | XRF | |
| TOTAL | 99.52 | WT% | XRF | |
| LOI | 0.18 | WT% | XRF | |
| RB | 148 | PPM | XRF | |
| SR | 84 | PPM | XRF | |
| Y | 29 | PPM | XRF | |
| ZR | 214 | PPM | XRF | |
| NB | 12 | PPM | XRF | |
| BA | 765 | PPM | XRF | |
| SC | 4.3 | PPM | INAA | |
| CR | 1 | PPM | INAA | |
| CO | 1.5 | PPM | INAA | |
| RB | 137 | PPM | INAA | |
| ZR | 183 | PPM | INAA | |
| SB | 1.47 | PPM | INAA | |
| CS | 9.51 | PPM | INAA | |
| BA | 782 | PPM | INAA | |
| LA | 23.3 | PPM | INAA | |
| CE | 48.4 | PPM | INAA | |
| ND | 20.5 | PPM | INAA | |
| SM | 4.7 | PPM | INAA | |
| EU | 0.509 | PPM | INAA | |
| GD | 3.71 | PPM | INAA | |
| TB | 0.653 | PPM | INAA | |
| DY | 4.41 | PPM | INAA | |
| TM | 0.48 | PPM | INAA | |
| YB | 2.98 | PPM | INAA | |
| LU | 0.471 | PPM | INAA | |
| HF | 5.5 | PPM | INAA | |
| TA | 0.951 | PPM | INAA | |
| TH | 15.5 | PPM | INAA | |
| U | 6.42 | PPM | INAA | |
| MN | 265 | PPM | INAA |