Sample IG 40
NavDat sample number 11653 · GRANITE
Sample
| Sample ID | IG 40 |
|---|---|
| Rock name | GRANITE |
| Rock type | PLUTONIC |
| Composition | FELSIC |
| Material | IGNEOUS |
| Comment | megacrystic |
Location
| Latitude | 46.485 |
|---|---|
| Longitude | -114.392 |
| State / province | Montana |
| Volcanic field | Idaho batholith, Bitterroot lobe |
Age
| Age (Ma) | Error | Min | Max | Geologic age | Dated by |
|---|---|---|---|---|---|
| 62 | 60 | 80 |
Analyses
Whole rock
| Item | Value | Std. dev. | Unit | Method |
|---|---|---|---|---|
| SIO2 | 67.5 | WT% | XRF | |
| AL2O3 | 17.89 | WT% | XRF | |
| FE2O3T | 1.45 | WT% | XRF | |
| CAO | 2.18 | WT% | XRF | |
| K2O | 6.05 | WT% | XRF | |
| TIO2 | 0.2 | WT% | XRF | |
| NA2O | 4.2 | WT% | EPMA | |
| MGO | 0.31 | WT% | EPMA | |
| LOI | 1.26 | WT% | XRF | |
| TOTAL | 101.04 | WT% | XRF | |
| ZR | 166 | PPM | XRF | |
| NB | 12 | PPM | XRF | |
| Y | 7 | PPM | XRF | |
| RB | 158 | PPM | XRF | |
| SR | 560 | PPM | XRF | |
| BA | 2550 | PPM | XRF | |
| LA | 32 | PPM | NAA | |
| CE | 74 | PPM | NAA | |
| SM | 3 | PPM | NAA | |
| EU | 4.7 | PPM | NAA | |
| SR87_SR86 | 0.7103 | TIMS | ||
| PB206_PB204 | 18.059 | TIMS | ||
| PB207_PB204 | 15.589 | TIMS | ||
| PB208_PB204 | 38.034 | TIMS |