Sample O72
NavDat sample number 21683 · RHYOLITE
Sample
| Sample ID | O72 |
|---|---|
| Rock name | RHYOLITE |
| Rock type | VOLCANIC |
| Composition | FELSIC |
| Material | IGNEOUS |
Location
| Latitude | 28.33 |
|---|---|
| Longitude | -107.87 |
| Location | Tomochic caldera |
| State / province | CHIHUAHUA |
| Formation | moat rhyolite |
Age
| Age (Ma) | Error | Min | Max | Geologic age | Dated by |
|---|---|---|---|---|---|
| 27.4 | 26.8 | 28 |
Analyses
Whole rock
| Item | Value | Std. dev. | Unit | Method |
|---|---|---|---|---|
| SIO2 | 72.53 | WT% | WET | |
| TIO2 | 0.14 | WT% | WET | |
| AL2O3 | 12.6 | WT% | WET | |
| FE2O3 | 0.75 | WT% | WET | |
| FEO | 0.1 | WT% | WET | |
| MNO | 0.06 | WT% | WET | |
| MGO | 0.13 | WT% | WET | |
| CAO | 0.78 | WT% | WET | |
| NA2O | 3.33 | WT% | WET | |
| K2O | 4.93 | WT% | WET | |
| H2O_PLUS | 4.13 | WT% | WET | |
| H2O_MINUS | 0.26 | WT% | WET | |
| P2O5 | 0.02 | WT% | WET | |
| CO2 | 0 | WT% | WET | |
| TOTAL | 99.76 | WT% | WET | |
| RB | 193 | PPM | XRF | |
| SR | 77 | PPM | XRF | |
| Y | 27 | PPM | XRF | |
| ZR | 115 | PPM | XRF | |
| NB | 7 | PPM | XRF | |
| CL | 600 | PPM | NAA | |
| SC | 2.8 | PPM | NAA | |
| CO | 0.3 | PPM | NAA | |
| ZN | 62 | PPM | NAA | |
| ARSENIC | 2.5 | PPM | NAA | |
| SB | 0.38 | PPM | NAA | |
| CS | 3.5 | PPM | NAA | |
| BA | 1160 | PPM | NAA | |
| LA | 46 | PPM | NAA | |
| CE | 85 | PPM | NAA | |
| SM | 6.2 | PPM | NAA | |
| EU | 0.9 | PPM | NAA | |
| TB | 0.67 | PPM | NAA | |
| YB | 2.4 | PPM | NAA | |
| LU | 0.34 | PPM | NAA | |
| HF | 4.3 | PPM | NAA | |
| TA | 1.1 | PPM | NAA | |
| TH | 16 | PPM | NAA | |
| U | 3.8 | PPM | NAA |