Sample 202124
NavDat sample number 38394 · BASALTIC-ANDESITE
Sample
| Sample ID | 202124 |
|---|---|
| Rock name | BASALTIC-ANDESITE |
| Rock type | VOLCANIC |
| Composition | INTERMEDIATE |
| Material | IGNEOUS |
| Collected by | duBray and Harlan |
| Comment | Basaltic andesite lava flows |
Location
| Latitude | 45.6244 |
|---|---|
| Longitude | -109.94 |
| 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 | 54.99 | WT% | XRF | |
| AL2O3 | 19.04 | WT% | XRF | |
| FE2O3 | 1.31 | WT% | XRF | |
| FEO | 6.67 | WT% | XRF | |
| MGO | 3.51 | WT% | XRF | |
| CAO | 8.2 | WT% | XRF | |
| NA2O | 2.49 | WT% | XRF | |
| K2O | 2.52 | WT% | XRF | |
| TIO2 | 0.62 | WT% | XRF | |
| P2O5 | 0.5 | WT% | XRF | |
| MNO | 0.15 | WT% | XRF | |
| LOI | 4.96 | WT% | XRF | |
| RB | 56 | PPM | XRF | |
| SR | 858 | PPM | EDXRF | |
| Y | 20 | PPM | EDXRF | |
| ZR | 100 | PPM | EDXRF | |
| NB | 8 | PPM | EDXRF | |
| BA | 924 | PPM | EDXRF | |
| LA | 20 | PPM | EDXRF | |
| CE | 57 | PPM | EDXRF | |
| ND | 15 | PPM | EDXRF |