Sample 95ID-87
NavDat sample number 38670 · TRACHYDACITE
Sample
| Sample ID | 95ID-87 |
|---|---|
| Rock name | TRACHYDACITE |
| Rock type | VOLCANIC |
| Composition | FELSIC |
| Material | IGNEOUS |
| Comment | fine grained porphyritic with phenos of plag, bio, k-spar, amph, cpx, opaques; g.m. containing feldspar, quartz, and opaques |
Location
| Latitude | 44.79 |
|---|---|
| Longitude | -114.565 |
| Location | Silver Creek |
| State / province | Idaho |
| Volcanic field | Tcd, 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 | 66.48 | WT% | XRF | |
| TIO2 | 0.57 | WT% | XRF | |
| AL2O3 | 14.46 | WT% | XRF | |
| FEOT | 4.03 | WT% | XRF | |
| MNO | 0.12 | WT% | XRF | |
| MGO | 3.11 | WT% | XRF | |
| CAO | 3.8 | WT% | XRF | |
| NA2O | 3.41 | WT% | XRF | |
| K2O | 3.79 | WT% | XRF | |
| P2O5 | 0.21 | WT% | XRF | |
| LOI | 1.6 | WT% | XRF | |
| TOTAL | 100 | WT% | XRF | |
| NI | 44 | PPM | XRF | |
| CR | 222 | PPM | XRF | |
| SC | 12 | PPM | XRF | |
| V | 106 | PPM | XRF | |
| GA | 18 | PPM | XRF | |
| CU | 22 | PPM | XRF | |
| ZN | 57 | PPM | XRF | |
| ZR | 178 | PPM | XRF | |
| NB | 22.2 | PPM | XRF | |
| BA | 1410 | PPM | XRF | |
| RB | 120 | PPM | XRF | |
| SR | 523 | PPM | XRF | |
| PB | 21 | PPM | XRF | |
| TH | 19 | PPM | XRF | |
| Y | 19 | PPM | XRF | |
| LA | 44 | PPM | XRF | |
| CE | 95 | PPM | XRF |