Sample 202115
NavDat sample number 38392 · BASALTIC-ANDESITE
Sample
| Sample ID | 202115 |
|---|---|
| Rock name | BASALTIC-ANDESITE |
| Rock type | VOLCANIC |
| Composition | INTERMEDIATE |
| Material | IGNEOUS |
| Collected by | duBray and Harlan |
| Comment | Basaltic andesite lava flows |
Location
| Latitude | 45.5921 |
|---|---|
| Longitude | -109.874 |
| Location | Derby Ridge |
| 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 | 58.75 | WT% | XRF | |
| AL2O3 | 17.94 | WT% | XRF | |
| FE2O3 | 1.01 | WT% | XRF | |
| FEO | 5.15 | WT% | XRF | |
| MGO | 2.79 | WT% | XRF | |
| CAO | 5.8 | WT% | XRF | |
| NA2O | 4.45 | WT% | XRF | |
| K2O | 2.99 | WT% | XRF | |
| TIO2 | 0.59 | WT% | XRF | |
| P2O5 | 0.4 | WT% | XRF | |
| MNO | 0.12 | WT% | XRF | |
| LOI | 2.11 | WT% | XRF | |
| RB | 73 | PPM | XRF | |
| SR | 653 | PPM | EDXRF | |
| Y | 17 | PPM | EDXRF | |
| ZR | 146 | PPM | EDXRF | |
| NB | 12 | PPM | EDXRF | |
| BA | 1356 | PPM | EDXRF | |
| LA | 28 | PPM | EDXRF | |
| CE | 52 | PPM | EDXRF | |
| ND | 15 | PPM | EDXRF |