Sample 202089
NavDat sample number 38412 · TRACHYTE
Sample
| Sample ID | 202089 |
|---|---|
| Rock name | TRACHYTE |
| Rock type | VOLCANIC |
| Composition | INTERMEDIATE |
| Material | IGNEOUS |
| Collected by | duBray and Harlan |
| Comment | Basaltic trachyandesite and trachyte dikes |
Location
| Latitude | 45.6407 |
|---|---|
| Longitude | -109.945 |
| State / province | Montana |
Age
| Age (Ma) | Error | Min | Max | Geologic age | Dated by |
|---|---|---|---|---|---|
| 75.31 | 74.89 | 75.73 |
Analyses
Whole Rock
| Item | Value | Std. dev. | Unit | Method |
|---|---|---|---|---|
| SIO2 | 53.91 | WT% | XRF | |
| AL2O3 | 19.69 | WT% | XRF | |
| FE2O3 | 1.22 | WT% | XRF | |
| FEO | 6.23 | WT% | XRF | |
| MGO | 2.74 | WT% | XRF | |
| CAO | 8.59 | WT% | XRF | |
| NA2O | 3.74 | WT% | XRF | |
| K2O | 2.57 | WT% | XRF | |
| TIO2 | 0.62 | WT% | XRF | |
| P2O5 | 0.53 | WT% | XRF | |
| MNO | 0.16 | WT% | XRF | |
| LOI | 2.34 | WT% | XRF | |
| RB | 58 | PPM | XRF | |
| SR | 1183 | PPM | EDXRF | |
| Y | 20 | PPM | EDXRF | |
| ZR | 88 | PPM | EDXRF | |
| NB | 9 | PPM | EDXRF | |
| PB | 6 | PPM | EDXRF | |
| BA | 883 | PPM | EDXRF | |
| LA | 31 | PPM | EDXRF | |
| CE | 58 | PPM | EDXRF | |
| ND | 35 | PPM | EDXRF |