Sample 202088
NavDat sample number 38411 · TRACHYTE
Sample
| Sample ID | 202088 |
|---|---|
| Rock name | TRACHYTE |
| Rock type | VOLCANIC |
| Composition | INTERMEDIATE |
| Material | IGNEOUS |
| Collected by | duBray and Harlan |
| Comment | Basaltic trachyandesite and trachyte dikes |
Location
| Latitude | 45.663 |
|---|---|
| Longitude | -109.996 |
| 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 | 61.76 | WT% | XRF | |
| AL2O3 | 17.87 | WT% | XRF | |
| FE2O3 | 0.76 | WT% | XRF | |
| FEO | 3.86 | WT% | XRF | |
| MGO | 1.31 | WT% | XRF | |
| CAO | 4.4 | WT% | XRF | |
| NA2O | 3.58 | WT% | XRF | |
| K2O | 5.59 | WT% | XRF | |
| TIO2 | 0.48 | WT% | XRF | |
| P2O5 | 0.26 | WT% | XRF | |
| MNO | 0.14 | WT% | XRF | |
| LOI | 2.46 | WT% | XRF | |
| RB | 108 | PPM | XRF | |
| SR | 1056 | PPM | EDXRF | |
| Y | 23 | PPM | EDXRF | |
| ZR | 131 | PPM | EDXRF | |
| NB | 13 | PPM | EDXRF | |
| PB | 23 | PPM | EDXRF | |
| TH | 15 | PPM | EDXRF | |
| BA | 1367 | PPM | EDXRF | |
| LA | 54 | PPM | EDXRF | |
| CE | 70 | PPM | EDXRF | |
| ND | 30 | PPM | EDXRF |