Sample 123
NavDat sample number 18437 · RHYOLITE
Sample
| Sample ID | 123 |
|---|---|
| Rock name | RHYOLITE |
| Rock type | VOLCANIC |
| Composition | FELSIC |
| Material | IGNEOUS |
| Comment | phenos of quartz and saindine; slightly oxidized groundmass of patchy cryptofelsite |
Location
| Latitude | 44.3486 |
|---|---|
| Longitude | -114.862 |
| Location | above Duffy 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 | 74.98 | WT% | AAS | |
| TIO2 | 0 | WT% | AAS | |
| AL2O3 | 12.55 | WT% | AAS | |
| FE2O3 | 0.72 | WT% | AAS | |
| FEO | 0.74 | WT% | TIT | |
| MNO | 0.01 | WT% | AAS | |
| MGO | 0.57 | WT% | AAS | |
| CAO | 0.92 | WT% | AAS | |
| NA2O | 1.71 | WT% | AAS | |
| K2O | 4.85 | WT% | AAS | |
| P2O5 | 0.05 | WT% | AAS | |
| H2O_PLUS | 1.21 | WT% | UNKNOWN | |
| H2O_MINUS | 0.83 | WT% | UNKNOWN | |
| TOTAL | 99.14 | WT% | AAS | |
| RB | 195 | PPM | XRF | |
| SR | 105 | PPM | XRF | |
| BA | 785 | PPM | AAS | |
| CR | 5 | PPM | AAS | |
| ZR | 115 | PPM | XRF | |
| ZN | 37 | PPM | AAS |