Sample IG 26
NavDat sample number 11645 · GRANITE
Sample
| Sample ID | IG 26 |
|---|---|
| Rock name | GRANITE |
| Rock type | PLUTONIC |
| Composition | FELSIC |
| Material | IGNEOUS |
| Comment | coarse grained with abundant K-feldspar megacrysts |
Location
| Latitude | 46.515 |
|---|---|
| Longitude | -114.342 |
| 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 | 65.22 | WT% | XRF | |
| AL2O3 | 16.66 | WT% | XRF | |
| FE2O3T | 3.74 | WT% | XRF | |
| CAO | 4.31 | WT% | XRF | |
| K2O | 1.7 | WT% | XRF | |
| TIO2 | 0.44 | WT% | XRF | |
| NA2O | 4.66 | WT% | EPMA | |
| MGO | 0.84 | WT% | EPMA | |
| LOI | 0.9 | WT% | XRF | |
| TOTAL | 98.47 | WT% | XRF | |
| ZR | 213 | PPM | XRF | |
| NB | 19 | PPM | XRF | |
| Y | 20 | PPM | XRF | |
| RB | 87 | PPM | XRF | |
| SR | 817 | PPM | XRF | |
| BA | 728 | PPM | XRF | |
| SR87_SR86 | 0.7094 | TIMS | ||
| SM | 6.5 | PPM | MS-ID | |
| ND | 41.1 | PPM | MS-ID | |
| ND143_ND144 | 0.51168 | TIMS |