Sample 104
NavDat sample number 18435 · RHYOLITE
Sample
| Sample ID | 104 |
|---|---|
| Rock name | RHYOLITE |
| Rock type | VOLCANIC |
| Composition | FELSIC |
| Material | IGNEOUS |
| Comment | slightly strained phenos of sanidine and quartz; slightly oxidized cryptofelsite matrix |
Location
| Latitude | 44.3402 |
|---|---|
| Longitude | -114.843 |
| Location | around Mt. Mcgowan |
| 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 | 81.71 | WT% | AAS | |
| TIO2 | 0 | WT% | AAS | |
| AL2O3 | 8.99 | WT% | AAS | |
| FE2O3 | 0.51 | WT% | AAS | |
| FEO | 0.2 | WT% | TIT | |
| MNO | 0 | WT% | AAS | |
| MGO | 0.42 | WT% | AAS | |
| CAO | 0.12 | WT% | AAS | |
| NA2O | 2.96 | WT% | AAS | |
| K2O | 3.49 | WT% | AAS | |
| P2O5 | 0.01 | WT% | AAS | |
| H2O_PLUS | 0.3 | WT% | UNKNOWN | |
| H2O_MINUS | 0.41 | WT% | UNKNOWN | |
| TOTAL | 99.12 | WT% | AAS | |
| RB | 192 | PPM | XRF | |
| SR | -5 | PPM | XRF | |
| BA | 0 | PPM | AAS | |
| NI | 4 | PPM | AAS | |
| CR | 90 | PPM | AAS | |
| ZR | 134 | PPM | XRF | |
| ZN | 11 | PPM | AAS | |
| CU | 3 | PPM | AAS |