Sample 90L-21
NavDat sample number 30184 · DACITE
Sample
| Sample ID | 90L-21 |
|---|---|
| Rock name | DACITE |
| Rock type | VOLCANIC |
| Composition | FELSIC |
| Material | IGNEOUS |
Location
| Latitude | 38.0308 |
|---|---|
| Longitude | -106.839 |
| Location | base of cliff, NW of Eddysville Junction |
| State / province | COLORADO |
Age
| Age (Ma) | Error | Min | Max | Geologic age | Dated by |
|---|---|---|---|---|---|
| 27.71 | 27.62 | 27.8 |
Analyses
Whole rock
| Item | Value | Std. dev. | Unit | Method |
|---|---|---|---|---|
| SIO2 | 64.97 | WT% | XRF | |
| TIO2 | 0.6 | WT% | XRF | |
| AL2O3 | 16.91 | WT% | XRF | |
| FE2O3 | 4.53 | WT% | XRF | |
| MGO | 0.85 | WT% | XRF | |
| CAO | 3.45 | WT% | XRF | |
| NA2O | 3.83 | WT% | XRF | |
| K2O | 3.93 | WT% | XRF | |
| P2O5 | 0.23 | WT% | XRF | |
| MNO | 0.1 | WT% | XRF | |
| LOI | 1.27 | WT% | XRF | |
| TOTAL | 99.4 | WT% | XRF | |
| ZN | 57.5 | PPM | XRF | |
| RB | 111 | PPM | XRF | |
| SR | 399 | PPM | XRF | |
| Y | 23.5 | PPM | XRF | |
| ZR | 154 | PPM | XRF | |
| NB | 16.5 | PPM | XRF | |
| PB | 35.5 | PPM | XRF | |
| TH | 21.5 | PPM | XRF | |
| BA | 861 | PPM | XRF | |
| LA | 51 | PPM | XRF | |
| CE | 86 | PPM | XRF | |
| ND | 31 | PPM | XRF |