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Sample 93L-2B
NavDat sample number 45787 · RHYOLITE
Sample
| Sample ID | 93L-2B |
|---|
| Rock name | RHYOLITE |
|---|
| Rock type | VOLCANIC |
|---|
| Composition | FELSIC |
|---|
| Material | IGNEOUS |
|---|
Location
| Latitude | 37.871 |
|---|
| Longitude | -106.695 |
|---|
| Location | Southeast side Nelson Mtn., top of caprock |
|---|
| 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 | 65.13 | | WT% | XRF |
| TIO2 | 0.563585 | | WT% | XRF |
| AL2O3 | 16.4901 | | WT% | XRF |
| FE2O3 | 4.24776 | | WT% | XRF |
| MGO | 1.78469 | | WT% | XRF |
| CAO | 3.29801 | | WT% | XRF |
| NA2O | 3.14146 | | WT% | XRF |
| K2O | 3.90335 | | WT% | XRF |
| P2O5 | 0.271356 | | WT% | XRF |
| MNO | 0.104368 | | WT% | XRF |
| LOI | 4.14 | | WT% | XRF |
| TOTAL | 98.93 | | WT% | XRF |
| RB | 116 | | PPM | XRF |
| SR | 510 | | PPM | XRF |
| Y | 30 | | PPM | XRF |
| ZR | 215 | | PPM | XRF |
| NB | 17 | | PPM | XRF |
| BA | 900 | | PPM | XRF |
| LA | 55 | | PPM | XRF |
| CE | 76 | | PPM | XRF |
