Sample EF9513
NavDat sample number 40699 · RHYODACITE
Sample
| Sample ID | EF9513 |
|---|---|
| Rock name | RHYODACITE |
| Rock type | VOLCANIC |
| Composition | FELSIC |
| Material | IGNEOUS |
| Comment | small-medium biotite and corroded plag in a very fine matrix; occasional granophyre and anhedral qtz filling interstices |
Location
| Latitude | 45.9361 |
|---|---|
| Longitude | -113.741 |
| Location | East Fork Bitterroot River drainage, east of Sula |
| State / province | Montana |
| Volcanic field | dike |
Age
| Age (Ma) | Error | Min | Max | Geologic age | Dated by |
|---|---|---|---|---|---|
| 53.6 | 53.1 | 54.1 |
Analyses
Minerial
| Item | Value | Std. dev. | Unit | Method |
|---|---|---|---|---|
| SIO2 | 72.4 | WT% | XRF | |
| AL2O3 | 15.64 | WT% | XRF | |
| TIO2 | 0.377 | WT% | XRF | |
| FEOT | 1.62 | WT% | XRF | |
| MNO | 0.019 | WT% | XRF | |
| CAO | 1.11 | WT% | XRF | |
| MGO | 0.86 | WT% | XRF | |
| K2O | 4.84 | WT% | XRF | |
| NA2O | 4.18 | WT% | XRF | |
| P2O5 | 0.098 | WT% | XRF | |
| TOTAL | 101.144 | WT% | XRF | |
| NI | 10 | PPM | XRF | |
| CR | 13 | PPM | XRF | |
| SC | 2 | PPM | XRF | |
| V | 29 | PPM | XRF | |
| BA | 1137 | PPM | XRF | |
| RB | 198 | PPM | XRF | |
| SR | 293 | PPM | XRF | |
| ZR | 192 | PPM | XRF | |
| Y | 7 | PPM | XRF | |
| NB | 9 | PPM | XRF | |
| GA | 26 | PPM | XRF | |
| CU | 4 | PPM | XRF | |
| ZN | 50 | PPM | XRF | |
| PB | 19 | PPM | XRF | |
| TH | 27 | PPM | XRF | |
| LA | 23.25 | PPM | ICPMS | |
| CE | 72.79 | PPM | ICPMS | |
| PR | 4.15 | PPM | ICPMS | |
| ND | 14.52 | PPM | ICPMS | |
| SM | 2.68 | PPM | ICPMS | |
| EU | 0.83 | PPM | ICPMS | |
| GD | 1.78 | PPM | ICPMS | |
| TB | 0.25 | PPM | ICPMS | |
| DY | 1.17 | PPM | ICPMS | |
| HO | 0.2 | PPM | ICPMS | |
| ER | 0.47 | PPM | ICPMS | |
| TM | 0.08 | PPM | ICPMS | |
| YB | 0.45 | PPM | ICPMS | |
| LU | 0.07 | PPM | ICPMS | |
| HF | 5.52 | PPM | ICPMS | |
| TA | 0.56 | PPM | ICPMS | |
| U | 3.6 | PPM | ICPMS | |
| CS | 3.06 | PPM | ICPMS |