Sample 202111
NavDat sample number 38413 · TRACHYTE
Sample
| Sample ID | 202111 |
|---|---|
| Rock name | TRACHYTE |
| Rock type | VOLCANIC |
| Composition | INTERMEDIATE |
| Material | IGNEOUS |
| Collected by | duBray and Harlan |
| Comment | Basaltic trachyandesite and trachyte dikes |
Location
| Latitude | 45.6222 |
|---|---|
| Longitude | -109.919 |
| State / province | Montana |
Age
| Age (Ma) | Error | Min | Max | Geologic age | Dated by |
|---|---|---|---|---|---|
| 74.78 | 74.39 | 75.17 |
Analyses
Whole Rock
| Item | Value | Std. dev. | Unit | Method |
|---|---|---|---|---|
| SIO2 | 53.16 | WT% | XRF | |
| AL2O3 | 19.8 | WT% | XRF | |
| FE2O3 | 1.28 | WT% | XRF | |
| FEO | 6.51 | WT% | XRF | |
| MGO | 2.87 | WT% | XRF | |
| CAO | 8.89 | WT% | XRF | |
| NA2O | 4.03 | WT% | XRF | |
| K2O | 2.17 | WT% | XRF | |
| TIO2 | 0.58 | WT% | XRF | |
| P2O5 | 0.54 | WT% | XRF | |
| MNO | 0.17 | WT% | XRF | |
| LOI | 3.37 | WT% | XRF | |
| RB | 55 | PPM | XRF | |
| SR | 832 | PPM | EDXRF | |
| Y | 22 | PPM | EDXRF | |
| ZR | 62 | PPM | EDXRF | |
| NB | 7 | PPM | EDXRF | |
| PB | 13 | PPM | EDXRF | |
| BA | 966 | PPM | EDXRF | |
| LA | 21 | PPM | EDXRF | |
| CE | 57 | PPM | EDXRF | |
| ND | 32 | PPM | EDXRF |