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Sample 85L-18I
NavDat sample number 45799 · PYROCLASTIC-FALL
Sample
| Sample ID | 85L-18I |
|---|
| Rock name | PYROCLASTIC-FALL |
|---|
| Rock type | VOLCANIC |
|---|
| Composition | FELSIC |
|---|
| Material | IGNEOUS |
|---|
Location
| Latitude | 37.937 |
|---|
| Longitude | -107.062 |
|---|
| Location | Miners Creek, Snow Mesa |
|---|
| State / province | COLORADO |
|---|
| Formation | Nelson Mountain Caldera cycle, Nelson Mountain Tuff, lowermost nonwelded |
|---|
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 | 72.64 | | WT% | XRF |
| TIO2 | 0.238667 | | WT% | XRF |
| AL2O3 | 14.6455 | | WT% | XRF |
| FE2O3 | 2.41922 | | WT% | XRF |
| MGO | 1.19334 | | WT% | XRF |
| CAO | 2.28904 | | WT% | XRF |
| NA2O | 1.62728 | | WT% | XRF |
| K2O | 4.27431 | | WT% | XRF |
| P2O5 | 0.0759396 | | WT% | XRF |
| MNO | 0.0650911 | | WT% | XRF |
| LOI | 7.78 | | WT% | XRF |
| TOTAL | 99.47 | | WT% | XRF |
| ZN | 63 | | PPM | XRF |
| RB | 214 | | PPM | XRF |
| SR | 443 | | PPM | XRF |
| Y | 24 | | PPM | XRF |
| ZR | 150 | | PPM | XRF |
| NB | 26 | | PPM | XRF |
| PB | 38 | | PPM | XRF |
| NI | -10 | | PPM | XRF |
