Sample 221
NavDat sample number 17700 · RHYODACITE
Sample
| Sample ID | 221 |
|---|---|
| Rock name | RHYODACITE |
| 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 | 33.4681 |
|---|---|
| Longitude | -107.511 |
| Location | Grapevine Canyon |
| State / province | New Mexico |
Age
| Age (Ma) | Error | Min | Max | Geologic age | Dated by |
|---|---|---|---|---|---|
| 31.5 | 28.9 | 34.1 |
Analyses
Whole rock
| Item | Value | Std. dev. | Unit | Method |
|---|---|---|---|---|
| SIO2 | 70 | WT% | EDXRF | |
| TIO2 | 0.43 | WT% | EDXRF | |
| AL2O3 | 14.5 | WT% | EDXRF | |
| FEO | 2.25 | WT% | EDXRF | |
| MNO | 0.05 | WT% | EDXRF | |
| MGO | -1 | WT% | EDXRF | |
| CAO | 0.66 | WT% | EDXRF | |
| NA2O | 4 | WT% | EDXRF | |
| K2O | 5.64 | WT% | EDXRF | |
| TOTAL | 97.53 | WT% | EDXRF | |
| BA | -50 | PPM | EDXRF | |
| CR | 15 | PPM | EDXRF | |
| NI | 11 | PPM | EDXRF | |
| RB | 158 | PPM | EDXRF | |
| SR | 10 | PPM | EDXRF | |
| TH | 16.8 | PPM | EDXRF | |
| U | 2.7 | PPM | EDXRF | |
| V | 32 | PPM | EDXRF | |
| Y | 65 | PPM | EDXRF | |
| ZN | 97 | PPM | EDXRF | |
| ZR | 737 | PPM | EDXRF |