Sample IG 38
NavDat sample number 11651 · GRANITE
Sample
| Sample ID | IG 38 |
|---|---|
| Rock name | GRANITE |
| Rock type | PLUTONIC |
| Composition | FELSIC |
| Material | IGNEOUS |
| Comment | medium grained, megacrystic |
Location
| Latitude | 46.4917 |
|---|---|
| Longitude | -114.35 |
| 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 | 66.72 | WT% | XRF | |
| AL2O3 | 15.89 | WT% | XRF | |
| FE2O3T | 3.7 | WT% | XRF | |
| CAO | 2.46 | WT% | XRF | |
| K2O | 4.42 | WT% | XRF | |
| TIO2 | 0.54 | WT% | XRF | |
| NA2O | 3.9 | WT% | EPMA | |
| MGO | 0.91 | WT% | EPMA | |
| LOI | 0.87 | WT% | XRF | |
| TOTAL | 99.41 | WT% | XRF | |
| ZR | 257 | PPM | XRF | |
| NB | 18 | PPM | XRF | |
| Y | 15 | PPM | XRF | |
| RB | 146 | PPM | XRF | |
| SR | 676 | PPM | XRF | |
| BA | 2542 | PPM | XRF | |
| LA | 94 | PPM | NAA | |
| CE | 205 | PPM | NAA | |
| SM | 8.6 | PPM | NAA | |
| EU | 1.1 | PPM | NAA | |
| SR87_SR86 | 0.708 | TIMS | ||
| PB206_PB204 | 18.122 | TIMS | ||
| PB207_PB204 | 15.532 | TIMS | ||
| PB208_PB204 | 38.141 | TIMS |