Sample 95ID-41
NavDat sample number 38623 · TRACHYANDESITE
Sample
| Sample ID | 95ID-41 |
|---|---|
| Rock name | TRACHYANDESITE |
| Rock type | VOLCANIC |
| Composition | INTERMEDIATE |
| Material | IGNEOUS |
| Comment | fine grained porphyritic with phenos of cpx, amph, opx; g.m. has k-feldspar |
Location
| Latitude | 44.59 |
|---|---|
| Longitude | -114.192 |
| Location | Highway 95 |
| State / province | Idaho |
| Volcanic field | Tl of main effusive phase, 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 | 60.74 | WT% | XRF | |
| TIO2 | 0.95 | WT% | XRF | |
| AL2O3 | 16.64 | WT% | XRF | |
| FEOT | 6.29 | WT% | XRF | |
| MNO | 0.11 | WT% | XRF | |
| MGO | 2.46 | WT% | XRF | |
| CAO | 4.97 | WT% | XRF | |
| NA2O | 3.44 | WT% | XRF | |
| K2O | 3.99 | WT% | XRF | |
| P2O5 | 0.4 | WT% | XRF | |
| LOI | 0.97 | WT% | XRF | |
| TOTAL | 100 | WT% | XRF | |
| NI | 0 | PPM | XRF | |
| CR | 3 | PPM | XRF | |
| SC | 13 | PPM | XRF | |
| V | 122 | PPM | XRF | |
| GA | 22 | PPM | XRF | |
| CU | 0 | PPM | XRF | |
| ZN | 66 | PPM | XRF | |
| BA | 1024 | PPM | ICPMS | |
| RB | 115.4 | PPM | ICPMS | |
| SR | 629 | PPM | ICPMS | |
| U | 2.44 | PPM | ICPMS | |
| PB | 11.13 | PPM | ICPMS | |
| CS | 1.78 | PPM | ICPMS | |
| TH | 8.47 | PPM | ICPMS | |
| ZR | 269 | PPM | XRF | |
| Y | 30.68 | PPM | ICPMS | |
| NB | 25.47 | PPM | XRF | |
| HF | 6.74 | PPM | ICPMS | |
| TA | 1.46 | PPM | ICPMS | |
| LA | 48.97 | PPM | ICPMS | |
| CE | 91.02 | PPM | ICPMS | |
| PR | 10.09 | PPM | ICPMS | |
| ND | 39.63 | PPM | ICPMS | |
| SM | 8.13 | PPM | ICPMS | |
| EU | 2.08 | PPM | ICPMS | |
| GD | 6.37 | PPM | ICPMS | |
| TB | 1.02 | PPM | ICPMS | |
| DY | 5.93 | PPM | ICPMS | |
| HO | 1.14 | PPM | ICPMS | |
| ER | 3.24 | PPM | ICPMS | |
| TM | 0.44 | PPM | ICPMS | |
| YB | 2.74 | PPM | ICPMS | |
| LU | 0.43 | PPM | ICPMS |