Sample H87-203
NavDat sample number 21003 · RHYOLITE
Sample
| Sample ID | H87-203 |
|---|---|
| Rock name | RHYOLITE |
| Rock type | VOLCANIC |
| Composition | FELSIC |
| Material | IGNEOUS |
Location
| Latitude | 30.5 |
|---|---|
| Longitude | -104.75 |
| Location | Bracks Rhyolite |
| State / province | Texas |
Age
| Age (Ma) | Error | Min | Max | Geologic age | Dated by |
|---|---|---|---|---|---|
| 36.8 | 26 | 38 |
Analyses
Whole rock
| Item | Value | Std. dev. | Unit | Method |
|---|---|---|---|---|
| SIO2 | 67.09 | WT% | ICPAES | |
| TIO2 | 0.54 | WT% | ICPAES | |
| AL2O3 | 12.66 | WT% | ICPAES | |
| FE2O3 | 2.15 | WT% | ICPAES | |
| FEO | 3.2 | WT% | ICPAES | |
| MNO | 0.2 | WT% | ICPAES | |
| MGO | 0.26 | WT% | ICPAES | |
| CAO | 1.59 | WT% | ICPAES | |
| NA2O | 4.29 | WT% | ICPAES | |
| K2O | 4.8 | WT% | ICPAES | |
| H2O_PLUS | 2.64 | WT% | ICPAES | |
| CO2 | 0.15 | WT% | ICPAES | |
| TOTAL | 99.57 | WT% | ICPAES | |
| Y | 84 | PPM | ICPMS | |
| LA | 75 | PPM | ICPMS | |
| CE | 168 | PPM | ICPMS | |
| PR | 21 | PPM | ICPMS | |
| ND | 73 | PPM | ICPMS | |
| SM | 16 | PPM | ICPMS | |
| EU | 2.4 | PPM | ICPMS | |
| GD | 16 | PPM | ICPMS | |
| TB | 2.6 | PPM | ICPMS | |
| DY | 15 | PPM | ICPMS | |
| HO | 2.9 | PPM | ICPMS | |
| ER | 10.2 | PPM | ICPMS | |
| TM | 1.3 | PPM | ICPMS | |
| YB | 9.4 | PPM | ICPMS | |
| LU | 1.4 | PPM | ICPMS |