Sample 95ID-43A
NavDat sample number 38658 · TRACHYANDESITE
Sample
| Sample ID | 95ID-43A |
|---|---|
| Rock name | TRACHYANDESITE |
| Rock type | VOLCANIC |
| Composition | INTERMEDIATE |
| Material | IGNEOUS |
| Comment | fine grained porphyritic with phenos of plag, opx, cpx, opaques, and bio; cryptocrystalline groundmass |
Location
| Latitude | 44.4433 |
|---|---|
| Longitude | -114.227 |
| Location | Birch Creek; same locality as 95ID-42A but different dike |
| State / province | Idaho |
| Volcanic field | dike from Tdf unit, Challis Volcanic Group |
Age
| Age (Ma) | Error | Min | Max | Geologic age | Dated by |
|---|---|---|---|---|---|
| 46.1 | 43.2 | 49 |
Analyses
Whole rock
| Item | Value | Std. dev. | Unit | Method |
|---|---|---|---|---|
| SIO2 | 64.22 | WT% | XRF | |
| TIO2 | 0.74 | WT% | XRF | |
| AL2O3 | 15.58 | WT% | XRF | |
| FEOT | 4.74 | WT% | XRF | |
| MNO | 0.09 | WT% | XRF | |
| MGO | 2.96 | WT% | XRF | |
| CAO | 4.85 | WT% | XRF | |
| NA2O | 3.81 | WT% | XRF | |
| K2O | 2.78 | WT% | XRF | |
| P2O5 | 0.23 | WT% | XRF | |
| LOI | 1.72 | WT% | XRF | |
| TOTAL | 100 | WT% | XRF | |
| NI | 11 | PPM | XRF | |
| CR | 69 | PPM | XRF | |
| SC | 15 | PPM | XRF | |
| V | 98 | PPM | XRF | |
| GA | 20 | PPM | XRF | |
| CU | 10 | PPM | XRF | |
| ZN | 66 | PPM | XRF | |
| ZR | 204 | PPM | XRF | |
| NB | 19 | PPM | XRF | |
| BA | 1146 | PPM | XRF | |
| RB | 120 | PPM | XRF | |
| SR | 531 | PPM | XRF | |
| PB | 18 | PPM | XRF | |
| TH | 15 | PPM | XRF | |
| Y | 22 | PPM | XRF | |
| LA | 43 | PPM | XRF | |
| CE | 58 | PPM | XRF |