Sample 156
NavDat sample number 18436 · RHYOLITE
Sample
| Sample ID | 156 |
|---|---|
| Rock name | RHYOLITE |
| Rock type | VOLCANIC |
| Composition | FELSIC |
| Material | IGNEOUS |
| Comment | phenos of sanidine and quartz; sericitized quarto-feldspathic groundmass |
Location
| Latitude | 44.3329 |
|---|---|
| Longitude | -114.883 |
| Location | along 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 | 76.4 | WT% | AAS | |
| TIO2 | 0.13 | WT% | AAS | |
| AL2O3 | 12.17 | WT% | AAS | |
| FE2O3 | 0.45 | WT% | AAS | |
| FEO | 0.66 | WT% | TIT | |
| MNO | 0.02 | WT% | AAS | |
| MGO | 0.26 | WT% | AAS | |
| CAO | 0.37 | WT% | AAS | |
| NA2O | 2.38 | WT% | AAS | |
| K2O | 4.95 | WT% | AAS | |
| P2O5 | 0.02 | WT% | AAS | |
| H2O_PLUS | 0.85 | WT% | UNKNOWN | |
| H2O_MINUS | 0.84 | WT% | UNKNOWN | |
| TOTAL | 99.5 | WT% | AAS | |
| RB | 247 | PPM | XRF | |
| SR | 61 | PPM | XRF | |
| BA | 95 | PPM | AAS | |
| NI | 4 | PPM | AAS | |
| CR | 16 | PPM | AAS | |
| ZR | 111 | PPM | XRF | |
| CU | 1 | PPM | AAS |