Sample 202502
NavDat sample number 50137 · ANDESITE
Sample
| Sample ID | 202502 |
|---|---|
| Rock name | ANDESITE |
| Rock type | PLUTONIC |
| Composition | INTERMEDIATE |
| Material | IGNEOUS |
| Comment | Trachyandesite |
Location
| Latitude | 46.0389 |
|---|---|
| Longitude | -110.355 |
| Location | Crazy Mountains |
| State / province | Montana |
Age
| Age (Ma) | Error | Min | Max | Geologic age | Dated by |
|---|---|---|---|---|---|
| 50 | 49.5 | 50.5 |
Analyses
Whole rock
| Item | Value | Std. dev. | Unit | Method |
|---|---|---|---|---|
| SIO2 | 59.31 | WT% | XRF | |
| AL2O3 | 18.31 | WT% | XRF | |
| FE2O3 | 0.6 | WT% | XRF | |
| FEO | 4.84 | WT% | XRF | |
| MGO | 2.12 | WT% | XRF | |
| CAO | 5.35 | WT% | XRF | |
| NA2O | 4.46 | WT% | XRF | |
| K2O | 3.39 | WT% | XRF | |
| TIO2 | 1.09 | WT% | XRF | |
| P2O5 | 0.43 | WT% | XRF | |
| MNO | 0.11 | WT% | XRF | |
| RB | 76 | PPM | EDXRF | |
| SR | 1008 | PPM | EDXRF | |
| Y | 27 | PPM | EDXRF | |
| ZR | 173 | PPM | EDXRF | |
| NB | 22 | PPM | EDXRF | |
| BA | 1632 | PPM | EDXRF | |
| LA | 62 | PPM | EDXRF | |
| CE | 92 | PPM | EDXRF | |
| ND | 32 | PPM | EDXRF |