Sample 187
NavDat sample number 17669 · DACITE
Sample
| Sample ID | 187 |
|---|---|
| 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 | 33.0425 |
|---|---|
| Longitude | -108.224 |
| Location | Brock Canyon |
| 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 |
|---|---|---|---|---|
| BA | 1138 | PPM | EDXRF | |
| CR | 30 | PPM | EDXRF | |
| HF | 9.8 | PPM | EDXRF | |
| NI | 29 | PPM | EDXRF | |
| RB | 266 | PPM | EDXRF | |
| SC | 10.7 | PPM | EDXRF | |
| SR | 425 | PPM | EDXRF | |
| TA | 1.3 | PPM | EDXRF | |
| TH | 22.5 | PPM | EDXRF | |
| V | 58 | PPM | EDXRF | |
| Y | 42 | PPM | EDXRF | |
| ZN | 66 | PPM | EDXRF | |
| ZR | 303 | PPM | EDXRF | |
| LA | 51.4 | PPM | EDXRF | |
| CE | 100 | PPM | EDXRF | |
| SM | 8.8 | PPM | EDXRF | |
| EU | 1.74 | PPM | EDXRF | |
| TB | 0.64 | PPM | EDXRF | |
| YB | 2.71 | PPM | EDXRF | |
| LU | 0.51 | PPM | EDXRF | |
| SIO2 | 63.2 | WT% | EDXRF | |
| TIO2 | 0.92 | WT% | EDXRF | |
| AL2O3 | 15.5 | WT% | EDXRF | |
| FEO | 1.7 | WT% | EDXRF | |
| FE2O3 | 3 | WT% | EDXRF | |
| MNO | 0.07 | WT% | EDXRF | |
| MGO | 2.2 | WT% | EDXRF | |
| CAO | 4 | WT% | EDXRF | |
| NA2O | 4.4 | WT% | EDXRF | |
| K2O | 2.2 | WT% | EDXRF | |
| P2O5 | 0.22 | WT% | EDXRF | |
| H2O_PLUS | 2.49 | WT% | EDXRF | |
| TOTAL | 100 | WT% | EDXRF |