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Sample LR88-611
NavDat sample number 45784 · DACITE
Sample
| Sample ID | LR88-611 |
|---|
| Rock name | DACITE |
|---|
| Rock type | VOLCANIC |
|---|
| Composition | FELSIC |
|---|
| Material | IGNEOUS |
|---|
Location
| Latitude | 37.922 |
|---|
| Longitude | -106.936 |
|---|
| Location | Nelson Mtn., in saddle along 4WD road |
|---|
| 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 | 62.17 | | WT% | XRF |
| TIO2 | 0.741148 | | WT% | XRF |
| AL2O3 | 17.0876 | | WT% | XRF |
| FE2O3 | 6.29976 | | WT% | XRF |
| MGO | 1.78081 | | WT% | XRF |
| CAO | 3.70574 | | WT% | XRF |
| NA2O | 3.05724 | | WT% | XRF |
| K2O | 4.24101 | | WT% | XRF |
| P2O5 | 0.339693 | | WT% | XRF |
| MNO | 0.102937 | | WT% | XRF |
| LOI | 2.84 | | WT% | XRF |
| TOTAL | 99.5259 | | WT% | XRF |
| ZN | 79 | | PPM | XRF |
| RB | 99 | | PPM | XRF |
| SR | 614 | | PPM | XRF |
| Y | 26 | | PPM | XRF |
| ZR | 188 | | PPM | XRF |
| NB | 11 | | PPM | XRF |
| PB | 36 | | PPM | XRF |
| TH | 26 | | PPM | XRF |
| BA | 1015 | | PPM | XRF |
| LA | 44 | | PPM | XRF |
| CE | 90 | | PPM | XRF |
| ND | 38 | | PPM | XRF |
