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Sample 85L-28
NavDat sample number 45752 · ANDESITE
Sample
| Sample ID | 85L-28 |
|---|
| Rock name | ANDESITE |
|---|
| Rock type | VOLCANIC |
|---|
| Composition | INTERMEDIATE |
|---|
| Material | IGNEOUS |
|---|
Location
| Latitude | 37.93 |
|---|
| Longitude | -106.935 |
|---|
| Location | north of Nelson Mountain |
|---|
| State / province | COLORADO |
|---|
| Formation | Nelson Mountain Caldera cycle, volcanics of Stewart Peak |
|---|
Age
| Age (Ma) | Error | Min | Max | Geologic age | Dated by |
|---|
| 26.5 |
|
26.1 |
26.9 |
|
|
Analyses
Whole rock
| Item | Value | Std. dev. | Unit | Method |
|---|
| SIO2 | 58.6 | | WT% | XRF |
| TIO2 | 1.00366 | | WT% | XRF |
| AL2O3 | 17.0319 | | WT% | XRF |
| FE2O3 | 7.50214 | | WT% | XRF |
| MGO | 2.67644 | | WT% | XRF |
| CAO | 5.66716 | | WT% | XRF |
| NA2O | 3.55845 | | WT% | XRF |
| K2O | 3.27458 | | WT% | XRF |
| P2O5 | 0.466349 | | WT% | XRF |
| MNO | 0.111518 | | WT% | XRF |
| LOI | 1.36 | | WT% | XRF |
| TOTAL | 99.89 | | WT% | XRF |
| ZN | 60 | | PPM | XRF |
| RB | 104 | | PPM | XRF |
| SR | 753 | | PPM | XRF |
| Y | 30 | | PPM | XRF |
| ZR | 190 | | PPM | XRF |
| NB | 20 | | PPM | XRF |
| PB | 28 | | PPM | XRF |
| CU | 11 | | PPM | XRF |
| NI | 22 | | PPM | XRF |
