Sample GPT-8-151
NavDat sample number 35574 · TUFF
Sample
| Sample ID | GPT-8-151 |
|---|---|
| Rock name | TUFF |
| Rock type | VOLCANIC |
| Composition | FELSIC |
| Material | IGNEOUS |
Location
| Latitude | 38.6 |
|---|---|
| Longitude | -105.6 |
| State / province | Colorado |
| Formation | GRIBBLES PARK TUFF |
Age
| Age (Ma) | Error | Min | Max | Geologic age | Dated by |
|---|---|---|---|---|---|
| 33 | 28 | 38 |
Analyses
Whole rock
| Item | Value | Std. dev. | Unit | Method |
|---|---|---|---|---|
| SIO2 | 73.7 | WT% | UV-VIS COLORIMETRY | |
| TIO2 | 0.26 | WT% | XRF | |
| AL2O3 | 14.01 | WT% | AAS | |
| FE2O3 | 1.36 | WT% | AAS | |
| FEO | 0 | WT% | AAS | |
| MNO | 0.09 | WT% | UNKNOWN | |
| MGO | 0.33 | WT% | AAS | |
| CAO | 0.65 | WT% | XRF | |
| NA2O | 4.11 | WT% | AAS | |
| K2O | 5.41 | WT% | AAS | |
| P2O5 | 0.07 | WT% | XRF | |
| LOI | 0.93 | WT% | LOI | |
| TOTAL | 99.44 | WT% | LOI | |
| BA | 130 | PPM | XRF | |
| RB | 240 | PPM | XRF | |
| SR | 40 | PPM | XRF | |
| TH | 55 | PPM | GAMMA-RAY COUNTING | |
| U | 5.9 | PPM | GAMMA-RAY COUNTING | |
| Y | 20 | PPM | ICP | |
| ZR | 190 | PPM | XRF |