Sample 85L-37
NavDat sample number 45803 · RHYOLITE
Sample
| Sample ID | 85L-37 |
|---|---|
| Rock name | RHYOLITE |
| Rock type | VOLCANIC |
| Composition | FELSIC |
| Material | IGNEOUS |
Location
| Latitude | 38.204 |
|---|---|
| Longitude | -106.738 |
| Location | Cochetopa Ridge |
| State / province | COLORADO |
| Formation | Nelson Mountain Caldera cycle, Nelson Mountain Tuff |
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 | 73.9 | WT% | XRF | |
| TIO2 | 0.283845 | WT% | XRF | |
| AL2O3 | 13.7868 | WT% | XRF | |
| FE2O3 | 1.96664 | WT% | XRF | |
| MGO | 0.425767 | WT% | XRF | |
| CAO | 1.30771 | WT% | XRF | |
| NA2O | 3.49737 | WT% | XRF | |
| K2O | 5.09907 | WT% | XRF | |
| P2O5 | 0.0709612 | WT% | XRF | |
| MNO | 0.0608239 | WT% | XRF | |
| LOI | 1.36 | WT% | XRF | |
| TOTAL | 100.4 | WT% | XRF | |
| ZN | 34 | PPM | XRF | |
| RB | 144 | PPM | XRF | |
| SR | 206 | PPM | XRF | |
| Y | 33 | PPM | XRF | |
| ZR | 203 | PPM | XRF | |
| NB | 19 | PPM | XRF | |
| PB | 39 | PPM | XRF | |
| RB | 133 | PPM | INAA | |
| BA | 894 | PPM | INAA | |
| SR | 197 | PPM | INAA | |
| TH | 12 | PPM | INAA | |
| U | 3.84 | PPM | INAA | |
| LA | 45 | PPM | INAA | |
| CE | 90 | PPM | INAA | |
| ND | 35 | PPM | INAA | |
| SM | 6.47 | PPM | INAA | |
| EU | 1.11 | PPM | INAA | |
| GD | 5.2 | PPM | INAA | |
| TB | 0.773 | PPM | INAA | |
| TM | 0.455 | PPM | INAA | |
| YB | 2.77 | PPM | INAA | |
| LU | 0.402 | PPM | INAA | |
| TA | 1.41 | PPM | INAA | |
| ZR | 184 | PPM | INAA | |
| HF | 6.09 | PPM | INAA | |
| SB | 0.353 | PPM | INAA | |
| SC | 3.65 | PPM | INAA | |
| CR | 0.522 | PPM | INAA | |
| CO | 1.66 | PPM | INAA | |
| NI | 5.82 | PPM | INAA | |
| ZN | 46.1 | PPM | INAA |