Sample 83L69
NavDat sample number 12083 · RHYODACITE
Sample
| Sample ID | 83L69 |
|---|---|
| Rock name | RHYODACITE |
| Rock type | VOLCANIC |
| Composition | FELSIC |
| Material | IGNEOUS |
| Comment | phenos of plag, chloritized bio and horn; dense trachytic groundmass |
Location
| Latitude | 45.065 |
|---|---|
| Longitude | -115.324 |
| State / province | Idaho |
| Volcanic field | Challis Volcanics; Thunder Mountain cauldron complex |
Age
| Age (Ma) | Error | Min | Max | Geologic age | Dated by |
|---|---|---|---|---|---|
| 47 | 45 | 49 |
Analyses
Whole rock
| Item | Value | Std. dev. | Unit | Method |
|---|---|---|---|---|
| SIO2 | 67.2 | WT% | UNKNOWN | |
| AL2O3 | 14.9 | WT% | UNKNOWN | |
| FE2O3 | 1.76 | WT% | UNKNOWN | |
| FEO | 1.56 | WT% | UNKNOWN | |
| MGO | 1.92 | WT% | UNKNOWN | |
| CAO | 2.05 | WT% | UNKNOWN | |
| NA2O | 3.78 | WT% | UNKNOWN | |
| K2O | 3.63 | WT% | UNKNOWN | |
| H2O_PLUS | 1.43 | WT% | UNKNOWN | |
| H2O_MINUS | 0.09 | WT% | UNKNOWN | |
| TIO2 | 0.54 | WT% | UNKNOWN | |
| P2O5 | 0.2 | WT% | UNKNOWN | |
| MNO | 0.05 | WT% | UNKNOWN | |
| CO2 | 0.05 | WT% | UNKNOWN | |
| TOTAL | 99.19 | WT% | UNKNOWN | |
| CL | -0.01 | WT% | UNKNOWN | |
| F | 0.03 | WT% | UNKNOWN |