← Search
Sample MB-499
NavDat sample number 75338 · ANDESITE
Sample
| Sample ID | MB-499 |
|---|
| Rock name | ANDESITE |
|---|
| Rock type | PLUTONIC |
|---|
| Composition | INTERMEDIATE |
|---|
| Material | IGNEOUS |
|---|
| Comment | andesite-dacite dike |
|---|
Location
| Latitude | 48.831 |
|---|
| Longitude | -121.836 |
|---|
| State / province | washington |
|---|
| Formation | Extracaldera andesite-dacite dikes of Chowder Ridge and Dobbs Cleaver |
|---|
Age
| Age (Ma) | Error | Min | Max | Geologic age | Dated by |
|---|
| 2.2 |
|
1.8 |
2.6 |
Early Pleistocene |
|
Analyses
Whole rock
| Item | Value | Std. dev. | Unit | Method |
|---|
| SIO2 | 53.84 | | WT% | XRF |
| TIO2 | 1.01 | | WT% | XRF |
| AL2O3 | 17.4 | | WT% | XRF |
| FEOT | 6.48 | | WT% | XRF |
| MNO | 0.13 | | WT% | XRF |
| MGO | 5.18 | | WT% | XRF |
| CAO | 10.87 | | WT% | XRF |
| NA2O | 3.05 | | WT% | XRF |
| K2O | 1.27 | | WT% | XRF |
| P2O5 | 0.37 | | WT% | XRF |
| LOI | 4.63 | | WT% | XRF |
