Sample 149
NavDat sample number 18425 · RHYODACITE
Sample
| Sample ID | 149 |
|---|---|
| Rock name | RHYODACITE |
| Rock type | VOLCANIC |
| Composition | FELSIC |
| Material | IGNEOUS |
| Comment | crystal rich; phenos of plag, quartz, bio, and relict hb; fine, patchy crystofelsite groundmass |
Location
| Latitude | 44.3329 |
|---|---|
| Longitude | -114.883 |
| Location | above Basin Creek |
| 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 | 68.67 | WT% | AAS | |
| TIO2 | 0.62 | WT% | AAS | |
| AL2O3 | 14.83 | WT% | AAS | |
| FE2O3 | 1.95 | WT% | AAS | |
| FEO | 1.25 | WT% | TIT | |
| MNO | 0.04 | WT% | AAS | |
| MGO | 1.17 | WT% | AAS | |
| CAO | 3.54 | WT% | AAS | |
| NA2O | 3.82 | WT% | AAS | |
| K2O | 2.79 | WT% | AAS | |
| P2O5 | 0.14 | WT% | AAS | |
| H2O_PLUS | 0.66 | WT% | UNKNOWN | |
| H2O_MINUS | 0.43 | WT% | UNKNOWN | |
| TOTAL | 99.91 | WT% | AAS | |
| RB | 73 | PPM | XRF | |
| SR | 647 | PPM | XRF | |
| BA | 1415 | PPM | AAS | |
| NI | 10 | PPM | AAS | |
| CR | 60 | PPM | AAS | |
| ZR | 178 | PPM | XRF | |
| ZN | 33 | PPM | AAS | |
| CU | 10 | PPM | AAS |