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Sample 99L-7
NavDat sample number 45850 · DACITE
Sample
| Sample ID | 99L-7 |
|---|
| Rock name | DACITE |
|---|
| Rock type | VOLCANIC |
|---|
| Composition | FELSIC |
|---|
| Material | IGNEOUS |
|---|
Location
| Latitude | 37.965 |
|---|
| Longitude | -106.897 |
|---|
| Location | East Lava dome |
|---|
| State / province | COLORADO |
|---|
| Formation | Cebolla Creek Caldera Cycle, dacite of East Willow Ck., east lava dome |
|---|
Age
| Age (Ma) | Error | Min | Max | Geologic age | Dated by |
|---|
| 27 |
|
26.9 |
27.1 |
|
|
Analyses
Whole rock
| Item | Value | Std. dev. | Unit | Method |
|---|
| SIO2 | 69.64 | | WT% | XRF |
| TIO2 | 0.41149 | | WT% | XRF |
| AL2O3 | 15.0194 | | WT% | XRF |
| FE2O3 | 2.901 | | WT% | XRF |
| MGO | 0.925852 | | WT% | XRF |
| CAO | 2.28377 | | WT% | XRF |
| NA2O | 3.27134 | | WT% | XRF |
| K2O | 5.15391 | | WT% | XRF |
| P2O5 | 0.216032 | | WT% | XRF |
| MNO | 0.0925852 | | WT% | XRF |
| LOI | 2.79 | | WT% | XRF |
| TOTAL | 99.92 | | WT% | XRF |
