Sample H87-202
NavDat sample number 21011 · TRACHYTE
Sample
| Sample ID | H87-202 |
|---|---|
| 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 | 67.06 | WT% | ICPAES | |
| TIO2 | 0.53 | WT% | ICPAES | |
| AL2O3 | 12.6 | WT% | ICPAES | |
| FE2O3 | 4.74 | WT% | ICPAES | |
| FEO | 0.9 | WT% | ICPAES | |
| MNO | 0.13 | WT% | ICPAES | |
| MGO | 0.3 | WT% | ICPAES | |
| CAO | 0.39 | WT% | ICPAES | |
| NA2O | 4.23 | WT% | ICPAES | |
| K2O | 5.99 | WT% | ICPAES | |
| H2O_PLUS | 0.54 | WT% | ICPAES | |
| TOTAL | 99.29 | WT% | ICPAES | |
| Y | 84 | PPM | ICPMS | |
| LA | 77 | PPM | ICPMS | |
| CE | 177 | PPM | ICPMS | |
| PR | 21 | PPM | ICPMS | |
| ND | 74 | PPM | ICPMS | |
| SM | 16 | PPM | ICPMS | |
| EU | 2.5 | PPM | ICPMS | |
| GD | 15 | PPM | ICPMS | |
| TB | 2.4 | PPM | ICPMS | |
| DY | 15 | PPM | ICPMS | |
| HO | 2.9 | PPM | ICPMS | |
| ER | 8.7 | PPM | ICPMS | |
| TM | 1.2 | PPM | ICPMS | |
| YB | 9.1 | PPM | ICPMS | |
| LU | 1.4 | PPM | ICPMS | |
| F | 700 | PPM | ICPMS |