Sample 95ID-86
NavDat sample number 38669 · TRACHYANDESITE
Sample
| Sample ID | 95ID-86 |
|---|---|
| Rock name | TRACHYANDESITE |
| Rock type | VOLCANIC |
| Composition | INTERMEDIATE |
| Material | IGNEOUS |
| Comment | fine grained porphyritic with phenos of plag, amph, bio, k-feldspar(?), cpx, opaques; cryptocrystalline g.m. containing feldspar, biotite, and opaques |
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 | 65.09 | WT% | XRF | |
| TIO2 | 0.66 | WT% | XRF | |
| AL2O3 | 14.95 | WT% | XRF | |
| FEOT | 5.09 | WT% | XRF | |
| MNO | 0.06 | WT% | XRF | |
| MGO | 3.14 | WT% | XRF | |
| CAO | 2.72 | WT% | XRF | |
| NA2O | 3.31 | WT% | XRF | |
| K2O | 4.64 | WT% | XRF | |
| P2O5 | 0.35 | WT% | XRF | |
| LOI | 1.82 | WT% | XRF | |
| TOTAL | 100 | WT% | XRF | |
| NI | 31 | PPM | XRF | |
| CR | 63 | PPM | XRF | |
| SC | 16 | PPM | XRF | |
| V | 98 | PPM | XRF | |
| GA | 18 | PPM | XRF | |
| CU | 22 | PPM | XRF | |
| ZN | 70 | PPM | XRF | |
| ZR | 205 | PPM | XRF | |
| NB | 22.2 | PPM | XRF | |
| BA | 1411 | PPM | XRF | |
| RB | 144 | PPM | XRF | |
| SR | 538 | PPM | XRF | |
| PB | 23 | PPM | XRF | |
| TH | 20 | PPM | XRF | |
| Y | 22 | PPM | XRF | |
| LA | 71 | PPM | XRF | |
| CE | 102 | PPM | XRF |