Sample 53
NavDat sample number 18434 · RHYOLITE
Sample
| Sample ID | 53 |
|---|---|
| Rock name | RHYOLITE |
| Rock type | VOLCANIC |
| Composition | FELSIC |
| Material | IGNEOUS |
| Comment | phenos of sanidine; slightly oxidized and flow-banded groundmass |
Location
| Latitude | 44.3402 |
|---|---|
| Longitude | -114.843 |
| Location | around Mt. Mcgowan |
| State / province | Idaho |
| Volcanic field | Challis Volcanics |
Age
| Age (Ma) | Error | Min | Max | Geologic age | Dated by |
|---|---|---|---|---|---|
| 46 | 43 | 49 |
Analyses
Whole rock
| Item | Value | Std. dev. | Unit | Method |
|---|---|---|---|---|
| SIO2 | 74.49 | WT% | AAS | |
| TIO2 | 0.15 | WT% | AAS | |
| AL2O3 | 13.03 | WT% | AAS | |
| FE2O3 | 1.15 | WT% | AAS | |
| FEO | 0.03 | WT% | TIT | |
| MNO | 0.01 | WT% | AAS | |
| MGO | 0.19 | WT% | AAS | |
| CAO | 0.29 | WT% | AAS | |
| NA2O | 2.43 | WT% | AAS | |
| K2O | 5.74 | WT% | AAS | |
| P2O5 | 0.05 | WT% | AAS | |
| H2O_PLUS | 0.57 | WT% | UNKNOWN | |
| H2O_MINUS | 0.49 | WT% | UNKNOWN | |
| TOTAL | 98.62 | WT% | AAS | |
| RB | 217 | PPM | XRF | |
| SR | 42 | PPM | XRF | |
| BA | 331 | PPM | AAS | |
| CR | 37 | PPM | AAS | |
| ZR | 206 | PPM | XRF | |
| ZN | 36 | PPM | AAS | |
| CU | 1 | PPM | AAS |