Sample 287
NavDat sample number 17761 · DACITE
Sample
| Sample ID | 287 |
|---|---|
| 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 | 33.0475 |
|---|---|
| Longitude | -108.199 |
| 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 | 64.94 | WT% | EDXRF | |
| TIO2 | 0.51 | WT% | EDXRF | |
| AL2O3 | 16.1 | WT% | EDXRF | |
| FEO | 1.57 | WT% | EDXRF | |
| FE2O3 | 1.8 | WT% | EDXRF | |
| MNO | 0.06 | WT% | EDXRF | |
| MGO | 1.47 | WT% | EDXRF | |
| CAO | 3.12 | WT% | EDXRF | |
| NA2O | 4.57 | WT% | EDXRF | |
| K2O | 2.13 | WT% | EDXRF | |
| P2O5 | 0.14 | WT% | EDXRF | |
| H2O_PLUS | 3.22 | WT% | EDXRF | |
| TOTAL | 100.12 | WT% | EDXRF | |
| BA | 918 | PPM | EDXRF | |
| CR | 20 | PPM | EDXRF | |
| NI | 16 | PPM | EDXRF | |
| RB | 130 | PPM | EDXRF | |
| SR | 324 | PPM | EDXRF | |
| V | 47 | PPM | EDXRF | |
| Y | 28 | PPM | EDXRF | |
| ZN | 76 | PPM | EDXRF | |
| ZR | 248 | PPM | EDXRF |