Sample H87-201
NavDat sample number 20999 · RHYOLITE
Sample
| Sample ID | H87-201 |
|---|---|
| Rock name | RHYOLITE |
| Rock type | VOLCANIC |
| Composition | FELSIC |
| Material | IGNEOUS |
Location
| Latitude | 30.5417 |
|---|---|
| Longitude | -104.667 |
| 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 | 67.47 | WT% | ICPAES | |
| TIO2 | 0.54 | WT% | ICPAES | |
| AL2O3 | 12.61 | WT% | ICPAES | |
| FE2O3 | 1.88 | WT% | ICPAES | |
| FEO | 3.65 | WT% | ICPAES | |
| MNO | 0.22 | WT% | ICPAES | |
| MGO | 0.23 | WT% | ICPAES | |
| CAO | 1.5 | WT% | ICPAES | |
| NA2O | 4.62 | WT% | ICPAES | |
| K2O | 5.02 | WT% | ICPAES | |
| H2O_PLUS | 1.99 | WT% | ICPAES | |
| CO2 | 0.11 | WT% | ICPAES | |
| TOTAL | 99.84 | WT% | ICPAES | |
| Y | 84 | PPM | ICPMS | |
| LA | 77 | PPM | ICPMS | |
| CE | 173 | PPM | ICPMS | |
| PR | 23 | PPM | ICPMS | |
| ND | 75 | PPM | ICPMS | |
| SM | 16 | PPM | ICPMS | |
| EU | 2.4 | PPM | ICPMS | |
| GD | 16 | PPM | ICPMS | |
| TB | 2.5 | PPM | ICPMS | |
| DY | 15 | PPM | ICPMS | |
| HO | 3 | PPM | ICPMS | |
| ER | 10.1 | PPM | ICPMS | |
| TM | 1.3 | PPM | ICPMS | |
| YB | 9.3 | PPM | ICPMS | |
| LU | 1.4 | PPM | ICPMS |