Sample 284
NavDat sample number 17758 · DACITE
Sample
| Sample ID | 284 |
|---|---|
| Rock name | DACITE |
| 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 | 33.0572 |
|---|---|
| Longitude | -108.182 |
| Location | Alum Mtn., salt creek member |
| State / province | New Mexico |
Age
| Age (Ma) | Error | Min | Max | Geologic age | Dated by |
|---|---|---|---|---|---|
| 29.7 | 28.7 | 30.7 |
Analyses
Whole rock
| Item | Value | Std. dev. | Unit | Method |
|---|---|---|---|---|
| SIO2 | 64.54 | WT% | EDXRF | |
| TIO2 | 0.52 | WT% | EDXRF | |
| AL2O3 | 15.78 | WT% | EDXRF | |
| FEO | 1.8 | WT% | EDXRF | |
| FE2O3 | 1.7 | WT% | EDXRF | |
| MNO | 0.06 | WT% | EDXRF | |
| MGO | 1.53 | WT% | EDXRF | |
| CAO | 3.08 | WT% | EDXRF | |
| NA2O | 3.28 | WT% | EDXRF | |
| K2O | 4.15 | WT% | EDXRF | |
| P2O5 | 0.16 | WT% | EDXRF | |
| H2O_PLUS | 2.98 | WT% | EDXRF | |
| TOTAL | 99.83 | WT% | EDXRF | |
| BA | 1057 | PPM | EDXRF | |
| CR | 18 | PPM | EDXRF | |
| NI | 18 | PPM | EDXRF | |
| RB | 226 | PPM | EDXRF | |
| SR | 355 | PPM | EDXRF | |
| V | 49 | PPM | EDXRF | |
| Y | 35 | PPM | EDXRF | |
| ZN | 69 | PPM | EDXRF | |
| ZR | 249 | PPM | EDXRF |