Sample 169
NavDat sample number 17652 · RHYOLITE
Sample
| Sample ID | 169 |
|---|---|
| Rock name | RHYOLITE |
| Rock type | VOLCANIC |
| Composition | FELSIC |
| Material | IGNEOUS |
| Comment | Maximum and minimum ages given are approximations based on average error of previous K-Ar dating. |
Location
| Latitude | 33.47 |
|---|---|
| Longitude | -107.89 |
| Location | Hells Mesa |
| State / province | New Mexico |
Age
| Age (Ma) | Error | Min | Max | Geologic age | Dated by |
|---|---|---|---|---|---|
| 32.1 | 30.6 | 33.6 |
Analyses
Whole rock
| Item | Value | Std. dev. | Unit | Method |
|---|---|---|---|---|
| SIO2 | 73 | WT% | EDXRF | |
| TIO2 | 0.25 | WT% | EDXRF | |
| AL2O3 | 14 | WT% | EDXRF | |
| FEO | 1.37 | WT% | EDXRF | |
| MNO | 0.01 | WT% | EDXRF | |
| MGO | -1 | WT% | EDXRF | |
| CAO | 0.85 | WT% | EDXRF | |
| NA2O | 3 | WT% | EDXRF | |
| K2O | 4.72 | WT% | EDXRF | |
| TOTAL | 97.2 | WT% | EDXRF | |
| BA | -50 | PPM | EDXRF | |
| CR | 5 | PPM | EDXRF | |
| NI | -4 | PPM | EDXRF | |
| RB | 188 | PPM | EDXRF | |
| SR | 140 | PPM | EDXRF | |
| TH | 30.5 | PPM | EDXRF | |
| U | 3.6 | PPM | EDXRF | |
| V | 24 | PPM | EDXRF | |
| Y | 33 | PPM | EDXRF | |
| ZN | 25 | PPM | EDXRF | |
| ZR | 150 | PPM | EDXRF |