Sample 202112
NavDat sample number 38390 · BASALTIC-ANDESITE
Sample
| Sample ID | 202112 |
|---|---|
| Rock name | BASALTIC-ANDESITE |
| Rock type | VOLCANIC |
| Composition | INTERMEDIATE |
| Material | IGNEOUS |
| Collected by | duBray and Harlan |
| Comment | Basaltic andesite lava flows |
Location
| Latitude | 45.6207 |
|---|---|
| Longitude | -109.925 |
| Location | Derby Ridge |
| State / province | Montana |
Age
| Age (Ma) | Error | Min | Max | Geologic age | Dated by |
|---|---|---|---|---|---|
| 74.78 | 74.39 | 75.17 |
Analyses
Whole Rock
| Item | Value | Std. dev. | Unit | Method |
|---|---|---|---|---|
| SIO2 | 54.76 | WT% | XRF | |
| AL2O3 | 19.81 | WT% | XRF | |
| FE2O3 | 1.14 | WT% | XRF | |
| FEO | 5.8 | WT% | XRF | |
| MGO | 3.11 | WT% | XRF | |
| CAO | 8.88 | WT% | XRF | |
| NA2O | 3.22 | WT% | XRF | |
| K2O | 2.18 | WT% | XRF | |
| TIO2 | 0.47 | WT% | XRF | |
| P2O5 | 0.48 | WT% | XRF | |
| MNO | 0.16 | WT% | XRF | |
| LOI | 1.18 | WT% | XRF | |
| RB | 51 | PPM | XRF | |
| SR | 841 | PPM | EDXRF | |
| Y | 23 | PPM | EDXRF | |
| ZR | 80 | PPM | EDXRF | |
| NB | 5 | PPM | EDXRF | |
| BA | 827 | PPM | EDXRF | |
| LA | 30 | PPM | EDXRF | |
| CE | 52 | PPM | EDXRF | |
| ND | 22 | PPM | EDXRF |