Sample 202125
NavDat sample number 38395 · BASALTIC-ANDESITE
Sample
| Sample ID | 202125 |
|---|---|
| Rock name | BASALTIC-ANDESITE |
| Rock type | VOLCANIC |
| Composition | INTERMEDIATE |
| Material | IGNEOUS |
| Collected by | duBray and Harlan |
| Comment | Basaltic andesite lava flows |
Location
| Latitude | 45.6284 |
|---|---|
| Longitude | -109.899 |
| 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 | 55.27 | WT% | XRF | |
| AL2O3 | 19.07 | WT% | XRF | |
| FE2O3 | 1.19 | WT% | XRF | |
| FEO | 6.07 | WT% | XRF | |
| MGO | 2.97 | WT% | XRF | |
| CAO | 9.28 | WT% | XRF | |
| NA2O | 2.92 | WT% | XRF | |
| K2O | 2.1 | WT% | XRF | |
| TIO2 | 0.52 | WT% | XRF | |
| P2O5 | 0.48 | WT% | XRF | |
| MNO | 0.14 | WT% | XRF | |
| LOI | 6.96 | WT% | XRF | |
| RB | 50 | PPM | XRF | |
| SR | 795 | PPM | EDXRF | |
| Y | 12 | PPM | EDXRF | |
| ZR | 71 | PPM | EDXRF | |
| NB | 4 | PPM | EDXRF | |
| PB | 17 | PPM | EDXRF | |
| TH | 13 | PPM | EDXRF | |
| BA | 836 | PPM | EDXRF | |
| LA | 21 | PPM | EDXRF | |
| CE | 46 | PPM | EDXRF | |
| ND | 6 | PPM | EDXRF |