← Search
Sample IG 31A
NavDat sample number 11647 · GRANITE
Sample
| Sample ID | IG 31A |
|---|
| Rock name | GRANITE |
|---|
| Rock type | PLUTONIC |
|---|
| Composition | FELSIC |
|---|
| Material | IGNEOUS |
|---|
| Comment | slightly foliated, medium grained |
|---|
Location
| Latitude | 46.505 |
|---|
| Longitude | -114.363 |
|---|
| 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 | 65.31 | | WT% | XRF |
| AL2O3 | 16.83 | | WT% | XRF |
| FE2O3T | 4.31 | | WT% | XRF |
| CAO | 4.26 | | WT% | XRF |
| K2O | 1.64 | | WT% | XRF |
| TIO2 | 0.52 | | WT% | XRF |
| NA2O | 4.43 | | WT% | EPMA |
| MGO | 1.09 | | WT% | EPMA |
| LOI | 0.48 | | WT% | XRF |
| TOTAL | 98.87 | | WT% | XRF |
| ZR | 236 | | PPM | XRF |
| NB | 15 | | PPM | XRF |
| Y | 7 | | PPM | XRF |
| RB | 70 | | PPM | XRF |
| SR | 942 | | PPM | XRF |
| BA | 1666 | | PPM | XRF |
| SR87_SR86 | 0.7096 | | | TIMS |
