Sample 202116
NavDat sample number 38393 · BASALTIC-ANDESITE
Sample
| Sample ID | 202116 |
|---|---|
| Rock name | BASALTIC-ANDESITE |
| Rock type | VOLCANIC |
| Composition | INTERMEDIATE |
| Material | IGNEOUS |
| Collected by | duBray and Harlan |
| Comment | Basaltic andesite lava flows |
Location
| Latitude | 45.5517 |
|---|---|
| Longitude | -109.928 |
| 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 | 52.85 | WT% | XRF | |
| AL2O3 | 19.48 | WT% | XRF | |
| FE2O3 | 1.06 | WT% | XRF | |
| FEO | 5.42 | WT% | XRF | |
| MGO | 2.52 | WT% | XRF | |
| CAO | 10.72 | WT% | XRF | |
| NA2O | 4.59 | WT% | XRF | |
| K2O | 2.16 | WT% | XRF | |
| TIO2 | 0.45 | WT% | XRF | |
| P2O5 | 0.51 | WT% | XRF | |
| MNO | 0.24 | WT% | XRF | |
| LOI | 5.97 | WT% | XRF | |
| RB | 64 | PPM | XRF | |
| SR | 860 | PPM | EDXRF | |
| Y | 7 | PPM | EDXRF | |
| ZR | 68 | PPM | EDXRF | |
| NB | 8 | PPM | EDXRF | |
| PB | 17 | PPM | EDXRF | |
| TH | 3 | PPM | EDXRF | |
| BA | 1078 | PPM | EDXRF | |
| LA | 16 | PPM | EDXRF | |
| CE | 72 | PPM | EDXRF | |
| ND | 25 | PPM | EDXRF |