Sample J87-67
NavDat sample number 33641 · RHYOLITE
Sample
| Sample ID | J87-67 |
|---|---|
| Rock name | RHYOLITE |
| Rock type | VOLCANIC |
| Composition | FELSIC |
| Material | IGNEOUS |
Location
| Latitude | 30.5983 |
|---|---|
| Longitude | -103.922 |
| Location | Barrel Springs Formation, Davis Mtns |
| State / province | Texas |
Age
| Age (Ma) | Error | Min | Max | Geologic age | Dated by |
|---|---|---|---|---|---|
| 35.69 | 35.57 | 35.81 |
Analyses
Whole rock
| Item | Value | Std. dev. | Unit | Method |
|---|---|---|---|---|
| SIO2 | 70.75 | WT% | XRF | |
| TIO2 | 0.49 | WT% | XRF | |
| AL2O3 | 14.08 | WT% | XRF | |
| FEOT | 3.22 | WT% | XRF | |
| MNO | 0.09 | WT% | XRF | |
| MGO | 0.02 | WT% | XRF | |
| CAO | 0.64 | WT% | XRF | |
| NA2O | 4.63 | WT% | XRF | |
| K2O | 6.03 | WT% | XRF | |
| P2O5 | 0.06 | WT% | XRF | |
| H2O_PLUS | 0.34 | WT% | XRF | |
| TOTAL | 99.67 | WT% | XRF | |
| CR | 1 | PPM | XRF | |
| NI | 10 | PPM | XRF | |
| CU | 4 | PPM | XRF | |
| ZN | 98 | PPM | XRF | |
| GA | 25 | PPM | XRF | |
| RB | 234 | PPM | XRF | |
| SR | 28 | PPM | XRF | |
| Y | 92 | PPM | XRF | |
| ZR | 883 | PPM | XRF | |
| NB | 108 | PPM | XRF | |
| BA | 115 | PPM | XRF | |
| LA | 108 | PPM | XRF | |
| CE | 259 | PPM | XRF | |
| TA | 23 | PPM | XRF | |
| PB | 25 | PPM | XRF |