Sample H87-199
NavDat sample number 21002 · RHYOLITE
Sample
| Sample ID | H87-199 |
|---|---|
| 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 | 68.45 | WT% | ICPAES | |
| TIO2 | 0.52 | WT% | ICPAES | |
| AL2O3 | 13.05 | WT% | ICPAES | |
| FE2O3 | 5.26 | WT% | ICPAES | |
| FEO | 0.68 | WT% | ICPAES | |
| MNO | 0.16 | WT% | ICPAES | |
| MGO | 0.24 | WT% | ICPAES | |
| CAO | 0.57 | WT% | ICPAES | |
| NA2O | 4.46 | WT% | ICPAES | |
| K2O | 5.43 | WT% | ICPAES | |
| H2O_PLUS | 0.56 | WT% | ICPAES | |
| TOTAL | 99.48 | WT% | ICPAES | |
| Y | 79 | PPM | ICPMS | |
| LA | 87 | PPM | ICPMS | |
| CE | 173 | PPM | ICPMS | |
| ND | 87 | PPM | ICPMS | |
| EU | 2.6 | PPM | ICPMS | |
| GD | 16 | PPM | ICPMS | |
| DY | 16 | PPM | ICPMS | |
| ER | 8.9 | PPM | ICPMS | |
| YB | 8.9 | PPM | ICPMS | |
| LU | 1.2 | PPM | ICPMS |