Sample 95ID-84
NavDat sample number 38668 · TRACHYDACITE
Sample
| Sample ID | 95ID-84 |
|---|---|
| Rock name | TRACHYDACITE |
| Rock type | VOLCANIC |
| Composition | FELSIC |
| Material | IGNEOUS |
| Comment | fine grained porphyritic with phenos of plag, bio (altered relics), amph (altered relics), k-feldspar(?), opaques; cryptocrystalline g.m. containing feldspar |
Location
| Latitude | 44.7917 |
|---|---|
| Longitude | -114.573 |
| Location | Highway 75 |
| State / province | Idaho |
| Volcanic field | Tca, Challis Volcanic Group |
Age
| Age (Ma) | Error | Min | Max | Geologic age | Dated by |
|---|---|---|---|---|---|
| 49 | 48 | 50 |
Analyses
Whole rock
| Item | Value | Std. dev. | Unit | Method |
|---|---|---|---|---|
| SIO2 | 65.14 | WT% | XRF | |
| TIO2 | 0.64 | WT% | XRF | |
| AL2O3 | 14.92 | WT% | XRF | |
| FEOT | 5.27 | WT% | XRF | |
| MNO | 0.02 | WT% | XRF | |
| MGO | 3.32 | WT% | XRF | |
| CAO | 2.47 | WT% | XRF | |
| NA2O | 3.21 | WT% | XRF | |
| K2O | 4.68 | WT% | XRF | |
| P2O5 | 0.34 | WT% | XRF | |
| LOI | 2.41 | WT% | XRF | |
| TOTAL | 100 | WT% | XRF | |
| NI | 29 | PPM | XRF | |
| CR | 65 | PPM | XRF | |
| SC | 10 | PPM | XRF | |
| V | 88 | PPM | XRF | |
| GA | 19 | PPM | XRF | |
| CU | 25 | PPM | XRF | |
| ZN | 68 | PPM | XRF | |
| ZR | 196 | PPM | XRF | |
| NB | 21.7 | PPM | XRF | |
| BA | 1429 | PPM | XRF | |
| RB | 144 | PPM | XRF | |
| SR | 535 | PPM | XRF | |
| PB | 23 | PPM | XRF | |
| TH | 20 | PPM | XRF | |
| Y | 20 | PPM | XRF | |
| LA | 62 | PPM | XRF | |
| CE | 97 | PPM | XRF |