Sample 14A
NavDat sample number 76273 · GABBRO
Sample
| Sample ID | 14A |
|---|---|
| Rock name | GABBRO |
| Rock type | PLUTONIC |
| Composition | MAFIC |
| Material | IGNEOUS |
| Comment | gabbro |
Location
| Latitude | 46.5631 |
|---|---|
| Longitude | -112.304 |
| Location | West of Helena |
| State / province | Montana |
| Pluton | Boulder batholith, Union Granodiorite? |
Age
| Age (Ma) | Error | Min | Max | Geologic age | Dated by |
|---|---|---|---|---|---|
| 77 | 72 | 82 |
Analyses
Whole rock
| Item | Value | Std. dev. | Unit | Method |
|---|---|---|---|---|
| SIO2 | 52.56 | WT% | XRF | |
| AL2O3 | 22.82 | WT% | XRF | |
| FEO | 6 | WT% | XRF | |
| MGO | 2.26 | WT% | XRF | |
| CAO | 9.24 | WT% | XRF | |
| NA2O | 3.35 | WT% | FPHOT | |
| K2O | 2.44 | WT% | XRF | |
| TIO2 | 0.77 | WT% | XRF | |
| P2O5 | 0.55 | WT% | XRF | |
| NB | 6.1 | PPM | XRF | |
| Y | 9.8 | PPM | XRF | |
| ZR | 88 | PPM | XRF | |
| SR | 3054.1 | PPM | XRF | |
| RB | 55 | PPM | XRF | |
| SM | 4.95 | PPM | TIMS_ID | |
| ND | 27.16 | PPM | TIMS_ID | |
| SM147_ND144 | 0.1103 | TIMS_ID | ||
| ND143_ND144 | 0.512393 | TIMS_ID | ||
| SR87_SR86 | 0.70504 | TIMS_ID | ||
| RB87_SR86 | 0.0521 | TIMS_ID | ||
| PB206_PB204 | 17.861 | TIMS | ||
| PB207_PB204 | 15.595 | TIMS | ||
| PB208_PB204 | 38.322 | TIMS |