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Sample IG 23
NavDat sample number 11642 · GRANITE
Sample
| Sample ID | IG 23 |
|---|
| Rock name | GRANITE |
|---|
| Rock type | PLUTONIC |
|---|
| Composition | FELSIC |
|---|
| Material | IGNEOUS |
|---|
| Comment | medium grained with occasional k-feldspar megacrysts |
|---|
Location
| Latitude | 46.52 |
|---|
| 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 | 69.82 | | WT% | XRF |
| AL2O3 | 15.47 | | WT% | XRF |
| FE2O3T | 2.74 | | WT% | XRF |
| CAO | 3.12 | | WT% | XRF |
| K2O | 1.59 | | WT% | XRF |
| TIO2 | 0.34 | | WT% | XRF |
| NA2O | 5.38 | | WT% | EPMA |
| MGO | 0.58 | | WT% | EPMA |
| LOI | 0.5 | | WT% | XRF |
| TOTAL | 99.55 | | WT% | XRF |
| ZR | 154 | | PPM | XRF |
| NB | 16 | | PPM | XRF |
| Y | 10 | | PPM | XRF |
| RB | 78 | | PPM | XRF |
| SR | 347 | | PPM | XRF |
| BA | 394 | | PPM | XRF |
| SR87_SR86 | 0.7098 | | | TIMS |
