Sample EC40
NavDat sample number 7802 · DACITE
Sample
| Sample ID | EC40 |
|---|---|
| Rock name | DACITE |
| Rock type | VOLCANIC |
| Composition | FELSIC |
| Material | IGNEOUS |
| Comment | vitrophyre |
Location
| Latitude | 28.8333 |
|---|---|
| Longitude | -104.333 |
| Location | Sierra el Virulento |
| State / province | Chihuahua |
Age
| Age (Ma) | Error | Min | Max | Geologic age | Dated by |
|---|---|---|---|---|---|
| 30.5 | 30.3 | 30.7 |
Analyses
Whole rock
| Item | Value | Std. dev. | Unit | Method |
|---|---|---|---|---|
| SIO2 | 69.89 | WT% | XRF | |
| TIO2 | 0.54 | WT% | XRF | |
| AL2O3 | 15.29 | WT% | XRF | |
| FE2O3 | 2.11 | WT% | XRF | |
| FEO | 0.55 | WT% | XRF | |
| MNO | 0.07 | WT% | XRF | |
| CAO | 1.63 | WT% | XRF | |
| NA2O | 4.4 | WT% | XRF | |
| MGO | 0.63 | WT% | XRF | |
| K2O | 4.75 | WT% | XRF | |
| P2O5 | 0.16 | WT% | XRF | |
| LOI | 3.7 | WT% | XRF | |
| Y | 44 | PPM | XRF | |
| SR | 207 | PPM | XRF | |
| RB | 184 | PPM | XRF | |
| TH | 19 | PPM | XRF | |
| ZR | 430 | PPM | XRF | |
| NB | 49 | PPM | XRF | |
| LA | 62.4 | PPM | ICPMS | |
| CE | 131 | PPM | ICPMS | |
| ND | 53.2 | PPM | ICPMS | |
| SM | 9.66 | PPM | ICPMS | |
| EU | 1.81 | PPM | ICPMS | |
| GD | 8.54 | PPM | ICPMS | |
| DY | 7.76 | PPM | ICPMS | |
| ER | 4.59 | PPM | ICPMS | |
| YB | 4.55 | PPM | ICPMS | |
| SR87_SR86 | 0.7066 | XRF |