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Sample 135
NavDat sample number 19732 · DACITE
Sample
| Sample ID | 135 |
|---|
| Rock name | DACITE |
|---|
| Rock type | PLUTONIC |
|---|
| Composition | FELSIC |
|---|
| Material | IGNEOUS |
|---|
Location
| Latitude | 46.4286 |
|---|
| Longitude | -115.12 |
|---|
| Location | Lochsa River / Route 12 section; sample name is its milepost location |
|---|
| State / province | Idaho |
|---|
| Volcanic field | Idaho batholith, Bitterroot lobe |
|---|
Age
| Age (Ma) | Error | Min | Max | Geologic age | Dated by |
|---|
| 77 |
|
70 |
85 |
|
|
Analyses
Whole rock
| Item | Value | Std. dev. | Unit | Method |
|---|
| SIO2 | 68.72 | | WT% | XRF |
| TIO2 | 0.58 | | WT% | XRF |
| AL2O3 | 16.08 | | WT% | XRF |
| FE2O3 | 1.49 | | WT% | XRF |
| FEO | 1.71 | | WT% | XRF |
| MNO | 0.05 | | WT% | XRF |
| MGO | 1.49 | | WT% | XRF |
| CAO | 3.27 | | WT% | XRF |
| NA2O | 2.72 | | WT% | XRF |
| K2O | 3.71 | | WT% | XRF |
| P2O5 | 0.187 | | WT% | XRF |
