Sample 15A
NavDat sample number 76275 · DIORITE
Sample
| Sample ID | 15A |
|---|---|
| Rock name | DIORITE |
| Rock type | PLUTONIC |
| Composition | INTERMEDIATE |
| Material | IGNEOUS |
| Comment | diorite |
Location
| Latitude | 46.6472 |
|---|---|
| Longitude | -111.723 |
| Location | West side of Big Belt Mountains, near Canyon Ferry Dam |
| State / province | Montana |
| Pluton | Boulder batholith(?), eastern outlier |
Age
| Age (Ma) | Error | Min | Max | Geologic age | Dated by |
|---|---|---|---|---|---|
| 75 | 65 | 85 |
Analyses
Whole rock
| Item | Value | Std. dev. | Unit | Method |
|---|---|---|---|---|
| SIO2 | 55.7 | WT% | XRF | |
| AL2O3 | 16.56 | WT% | XRF | |
| FEO | 9.43 | WT% | XRF | |
| MGO | 4 | WT% | XRF | |
| CAO | 7.45 | WT% | XRF | |
| NA2O | 2.98 | WT% | FPHOT | |
| K2O | 2.7 | WT% | XRF | |
| TIO2 | 0.83 | WT% | XRF | |
| P2O5 | 0.33 | WT% | XRF | |
| NB | 7.95 | PPM | XRF | |
| Y | 25.1 | PPM | XRF | |
| ZR | 113.45 | PPM | XRF | |
| SR | 723.63 | PPM | XRF | |
| RB | 60.47 | PPM | XRF | |
| SM | 5.05 | PPM | TIMS_ID | |
| ND | 28.76 | PPM | TIMS_ID | |
| SM147_ND144 | 0.106 | TIMS_ID | ||
| ND143_ND144 | 0.512006 | TIMS_ID | ||
| SR87_SR86 | 0.70736 | TIMS_ID | ||
| RB87_SR86 | 0.2418 | TIMS_ID |