Sample 40a
NavDat sample number 18422 · DACITE
Sample
| Sample ID | 40a |
|---|---|
| Rock name | DACITE |
| Rock type | VOLCANIC |
| Composition | FELSIC |
| Material | IGNEOUS |
| Comment | phenos of plag and augite; recrystallized groundmass |
Location
| Latitude | 44.3129 |
|---|---|
| Longitude | -114.837 |
| 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 | 63.39 | WT% | AAS | |
| TIO2 | 0.77 | WT% | AAS | |
| AL2O3 | 15.09 | WT% | AAS | |
| FE2O3 | 2.45 | WT% | AAS | |
| FEO | 2.58 | WT% | TIT | |
| MNO | 0.1 | WT% | AAS | |
| MGO | 1.27 | WT% | AAS | |
| CAO | 5.01 | WT% | AAS | |
| NA2O | 3.37 | WT% | AAS | |
| K2O | 3.08 | WT% | AAS | |
| P2O5 | 0.23 | WT% | AAS | |
| H2O_PLUS | 0.99 | WT% | UNKNOWN | |
| H2O_MINUS | 1.51 | WT% | UNKNOWN | |
| TOTAL | 99.84 | WT% | AAS | |
| RB | 95 | PPM | XRF | |
| SR | 539 | PPM | XRF | |
| BA | 1380 | PPM | AAS | |
| NI | 9 | PPM | AAS | |
| CR | 122 | PPM | AAS | |
| ZR | 213 | PPM | XRF | |
| ZN | 45 | PPM | AAS | |
| CU | 14 | PPM | AAS |