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Sample IG 20A
NavDat sample number 11640 · GRANITE
Sample
| Sample ID | IG 20A |
|---|
| Rock name | GRANITE |
|---|
| Rock type | PLUTONIC |
|---|
| Composition | FELSIC |
|---|
| Material | IGNEOUS |
|---|
| Comment | coarse grained |
|---|
Location
| Latitude | 46.535 |
|---|
| Longitude | -114.338 |
|---|
| 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 | 67.09 | | WT% | XRF |
| AL2O3 | 15.99 | | WT% | XRF |
| FE2O3T | 3.25 | | WT% | XRF |
| CAO | 2.44 | | WT% | XRF |
| K2O | 5.19 | | WT% | XRF |
| TIO2 | 0.48 | | WT% | XRF |
| NA2O | 3.64 | | WT% | EPMA |
| MGO | 0.79 | | WT% | EPMA |
| LOI | 0.29 | | WT% | XRF |
| TOTAL | 99.15 | | WT% | XRF |
| ZR | 268 | | PPM | XRF |
| NB | 17 | | PPM | XRF |
| Y | 16 | | PPM | XRF |
| RB | 145 | | PPM | XRF |
| SR | 596 | | PPM | XRF |
| BA | 2235 | | PPM | XRF |
| SR87_SR86 | 0.7106 | | | TIMS |
