Sample 288
NavDat sample number 17762 · DACITE
Sample
| Sample ID | 288 |
|---|---|
| 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 | 33.1222 |
|---|---|
| Longitude | -108.176 |
| Location | Alum Mtn., gila flat member |
| State / province | New Mexico |
Age
| Age (Ma) | Error | Min | Max | Geologic age | Dated by |
|---|---|---|---|---|---|
| 29.4 | 28.7 | 30.7 |
Analyses
Whole rock
| Item | Value | Std. dev. | Unit | Method |
|---|---|---|---|---|
| SIO2 | 62.17 | WT% | EDXRF | |
| TIO2 | 0.74 | WT% | EDXRF | |
| AL2O3 | 16.39 | WT% | EDXRF | |
| FEO | 2.66 | WT% | EDXRF | |
| FE2O3 | 2.16 | WT% | EDXRF | |
| MNO | 0.07 | WT% | EDXRF | |
| MGO | 2.53 | WT% | EDXRF | |
| CAO | 3.96 | WT% | EDXRF | |
| NA2O | 3.36 | WT% | EDXRF | |
| K2O | 3.93 | WT% | EDXRF | |
| P2O5 | 0.22 | WT% | EDXRF | |
| H2O_PLUS | 1.65 | WT% | EDXRF | |
| TOTAL | 100.01 | WT% | EDXRF | |
| BA | 1033 | PPM | EDXRF | |
| CR | 31 | PPM | EDXRF | |
| NI | 32 | PPM | EDXRF | |
| RB | 206 | PPM | EDXRF | |
| SR | 423 | PPM | EDXRF | |
| V | 72 | PPM | EDXRF | |
| Y | 37 | PPM | EDXRF | |
| ZN | 83 | PPM | EDXRF | |
| ZR | 323 | PPM | EDXRF |