Sample 172
NavDat sample number 17654 · RHYOLITE
Sample
| Sample ID | 172 |
|---|---|
| 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 | 32.675 |
|---|---|
| Longitude | -107.84 |
| Location | Mimbres peak |
| State / province | New Mexico |
Age
| Age (Ma) | Error | Min | Max | Geologic age | Dated by |
|---|---|---|---|---|---|
| 32 | 31 | 33 |
Analyses
Whole rock
| Item | Value | Std. dev. | Unit | Method |
|---|---|---|---|---|
| SIO2 | 76 | WT% | EDXRF | |
| TIO2 | 0.11 | WT% | EDXRF | |
| AL2O3 | 12.5 | WT% | EDXRF | |
| FEO | 0.8 | WT% | EDXRF | |
| MNO | 0.03 | WT% | EDXRF | |
| MGO | 1 | WT% | EDXRF | |
| CAO | 0.32 | WT% | EDXRF | |
| NA2O | 2.5 | WT% | EDXRF | |
| K2O | 6.76 | WT% | EDXRF | |
| TOTAL | 100.02 | WT% | EDXRF | |
| BA | -50 | PPM | EDXRF | |
| CR | -4 | PPM | EDXRF | |
| NI | -4 | PPM | EDXRF | |
| RB | 264 | PPM | EDXRF | |
| SR | 16 | PPM | EDXRF | |
| U | 3.8 | PPM | EDXRF | |
| V | -10 | PPM | EDXRF | |
| Y | 38 | PPM | EDXRF | |
| ZN | 23 | PPM | EDXRF | |
| ZR | 90 | PPM | EDXRF |