Sample 83L64
NavDat sample number 12088 · RHYOLITE
Sample
| Sample ID | 83L64 |
|---|---|
| Rock name | RHYOLITE |
| Rock type | VOLCANIC |
| Composition | FELSIC |
| Material | IGNEOUS |
| Comment | few phenos, flow laminated; silicification and albitization evident |
Location
| Latitude | 45.05 |
|---|---|
| Longitude | -115.362 |
| 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 | 74.7 | WT% | UNKNOWN | |
| AL2O3 | 13.6 | WT% | UNKNOWN | |
| FE2O3 | 0.58 | WT% | UNKNOWN | |
| FEO | 0.8 | WT% | UNKNOWN | |
| MGO | 0.12 | WT% | UNKNOWN | |
| CAO | 0.16 | WT% | UNKNOWN | |
| NA2O | 3.44 | WT% | UNKNOWN | |
| K2O | 5.02 | WT% | UNKNOWN | |
| H2O_PLUS | 0.72 | WT% | UNKNOWN | |
| H2O_MINUS | 0.03 | WT% | UNKNOWN | |
| TIO2 | 0.09 | WT% | UNKNOWN | |
| P2O5 | -0.05 | WT% | UNKNOWN | |
| MNO | -0.02 | WT% | UNKNOWN | |
| CO2 | -0.01 | WT% | UNKNOWN | |
| TOTAL | 99.29 | WT% | UNKNOWN | |
| CL | -1 | WT% | UNKNOWN | |
| F | 0.03 | WT% | UNKNOWN |