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Sample 94L-21
NavDat sample number 45898 · ANDESITE
Sample
| Sample ID | 94L-21 |
|---|
| Rock name | ANDESITE |
|---|
| Rock type | VOLCANIC |
|---|
| Composition | INTERMEDIATE |
|---|
| Material | IGNEOUS |
|---|
Location
| Latitude | 37.804 |
|---|
| Longitude | -107.043 |
|---|
| Location | Bristol Head |
|---|
| State / province | COLORADO |
|---|
| Formation | Rat Creek or late flow of SR cycle? Caldera Cycle, andesite of Bristol Head, lower flow |
|---|
Age
| Age (Ma) | Error | Min | Max | Geologic age | Dated by |
|---|
| 31.5 |
|
28 |
35 |
|
|
Analyses
Whole rock
| Item | Value | Std. dev. | Unit | Method |
|---|
| SIO2 | 62.35 | | WT% | XRF |
| TIO2 | 0.759124 | | WT% | XRF |
| AL2O3 | 15.9922 | | WT% | XRF |
| FE2O3 | 6.20457 | | WT% | XRF |
| MGO | 2.07494 | | WT% | XRF |
| CAO | 4.5345 | | WT% | XRF |
| NA2O | 3.53246 | | WT% | XRF |
| K2O | 3.15796 | | WT% | XRF |
| P2O5 | 0.30365 | | WT% | XRF |
| MNO | 0.101217 | | WT% | XRF |
| LOI | 1.19 | | WT% | XRF |
| TOTAL | 99.01 | | WT% | XRF |
| ZN | 54 | | PPM | XRF |
| RB | 66 | | PPM | XRF |
| SR | 660 | | PPM | XRF |
| Y | 24 | | PPM | XRF |
| ZR | 186 | | PPM | XRF |
| NB | 13 | | PPM | XRF |
| BA | 870 | | PPM | XRF |
| LA | -30 | | PPM | XRF |
| CE | 55 | | PPM | XRF |
| CU | 23 | | PPM | XRF |
| CR | -20 | | PPM | XRF |
| NI | -10 | | PPM | XRF |
