Sample H87-198
NavDat sample number 21006 · TRACHYTE
Sample
| Sample ID | H87-198 |
|---|---|
| Rock name | TRACHYTE |
| Rock type | VOLCANIC |
| Composition | INTERMEDIATE |
| 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 | 68.03 | WT% | ICPAES | |
| TIO2 | 0.52 | WT% | ICPAES | |
| AL2O3 | 13.17 | WT% | ICPAES | |
| FE2O3 | 5.23 | WT% | ICPAES | |
| FEO | 0.71 | WT% | ICPAES | |
| MNO | 0.12 | WT% | ICPAES | |
| MGO | 0.34 | WT% | ICPAES | |
| CAO | 0.56 | WT% | ICPAES | |
| NA2O | 4.58 | WT% | ICPAES | |
| K2O | 5.34 | WT% | ICPAES | |
| H2O_PLUS | 0.72 | WT% | ICPAES | |
| TOTAL | 99.41 | WT% | ICPAES | |
| Y | 80 | PPM | ICPMS | |
| LA | 76 | PPM | ICPMS | |
| CE | 162 | PPM | ICPMS | |
| ND | 74 | PPM | ICPMS | |
| EU | 2.4 | PPM | ICPMS | |
| GD | 16 | PPM | ICPMS | |
| DY | 15 | PPM | ICPMS | |
| ER | 9.8 | PPM | ICPMS | |
| YB | 8.8 | PPM | ICPMS | |
| LU | 1.3 | PPM | ICPMS |