Sample 58
NavDat sample number 18424 · DACITE
Sample
| Sample ID | 58 |
|---|---|
| Rock name | DACITE |
| Rock type | VOLCANIC |
| Composition | FELSIC |
| Material | IGNEOUS |
| Comment | phenos of plag; groundmass of recrystallized crystofelsite with relict hyalopilitic texture |
Location
| Latitude | 44.3217 |
|---|---|
| Longitude | -114.834 |
| Location | above East 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 | 67.38 | WT% | AAS | |
| TIO2 | 0.43 | WT% | AAS | |
| AL2O3 | 16.4 | WT% | AAS | |
| FE2O3 | 3.44 | WT% | AAS | |
| FEO | 0.46 | WT% | TIT | |
| MNO | 0.06 | WT% | AAS | |
| MGO | 0.74 | WT% | AAS | |
| CAO | 2.34 | WT% | AAS | |
| NA2O | 7.78 | WT% | AAS | |
| K2O | 1.03 | WT% | AAS | |
| P2O5 | 0.21 | WT% | AAS | |
| H2O_PLUS | 0.26 | WT% | UNKNOWN | |
| H2O_MINUS | 0.42 | WT% | UNKNOWN | |
| TOTAL | 100.95 | WT% | AAS | |
| RB | 28 | PPM | XRF | |
| SR | 311 | PPM | XRF | |
| BA | 603 | PPM | AAS | |
| NI | 3 | PPM | AAS | |
| CR | 74 | PPM | AAS | |
| ZR | 230 | PPM | XRF | |
| ZN | 32 | PPM | AAS | |
| CU | 12 | PPM | AAS |