Sample LR89-013
NavDat sample number 45802 · DACITE
Sample
| Sample ID | LR89-013 |
|---|---|
| Rock name | DACITE |
| Rock type | VOLCANIC |
| Composition | FELSIC |
| Material | IGNEOUS |
Location
| Latitude | 38.099 |
|---|---|
| Longitude | -106.983 |
| Location | east of Spring Creek |
| State / province | COLORADO |
| Formation | Nelson Mountain Caldera cycle, Nelson Mountain Tuff, dacite rim |
Age
| Age (Ma) | Error | Min | Max | Geologic age | Dated by |
|---|---|---|---|---|---|
| 26.5 | 25.9 | 27.1 |
Analyses
Whole rock
| Item | Value | Std. dev. | Unit | Method |
|---|---|---|---|---|
| SIO2 | 64.4 | WT% | XRF | |
| TIO2 | 0.623734 | WT% | XRF | |
| AL2O3 | 16.1567 | WT% | XRF | |
| FE2O3 | 5.24138 | WT% | XRF | |
| MGO | 0.754517 | WT% | XRF | |
| CAO | 3.36011 | WT% | XRF | |
| NA2O | 3.71222 | WT% | XRF | |
| K2O | 3.98385 | WT% | XRF | |
| P2O5 | 0.271626 | WT% | XRF | |
| MNO | 0.0603613 | WT% | XRF | |
| LOI | 0.59 | WT% | XRF | |
| TOTAL | 98.5645 | WT% | XRF | |
| ZN | 65 | PPM | XRF | |
| RB | 112 | PPM | XRF | |
| SR | 573 | PPM | XRF | |
| Y | 25 | PPM | XRF | |
| ZR | 186 | PPM | XRF | |
| NB | 17 | PPM | XRF | |
| PB | 41 | PPM | XRF | |
| TH | 18 | PPM | XRF | |
| BA | 1027 | PPM | XRF | |
| LA | 51 | PPM | XRF | |
| CE | 89 | PPM | XRF | |
| ND | 28 | PPM | XRF | |
| LA | 45 | PPM | INAA | |
| CE | 81 | PPM | INAA | |
| ND | 36 | PPM | INAA | |
| SM | 6.3 | PPM | INAA | |
| EU | 1.5 | PPM | INAA | |
| GD | 4.6 | PPM | INAA | |
| TB | 0.57 | PPM | INAA | |
| HO | 0.76 | PPM | INAA | |
| TM | 0.28 | PPM | INAA | |
| YB | 1.9 | PPM | INAA |