← Search
Sample MB-649
NavDat sample number 75346 · ANDESITE
Sample
| Sample ID | MB-649 |
|---|
| Rock name | ANDESITE |
|---|
| Rock type | PLUTONIC |
|---|
| Composition | INTERMEDIATE |
|---|
| Material | IGNEOUS |
|---|
| Comment | andesite-dacite dike |
|---|
Location
| Latitude | 48.819 |
|---|
| Longitude | -121.813 |
|---|
| 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 | 52.28 | | WT% | XRF |
| TIO2 | 0.84 | | WT% | XRF |
| AL2O3 | 17.67 | | WT% | XRF |
| FEOT | 7.97 | | WT% | XRF |
| MNO | 0.15 | | WT% | XRF |
| MGO | 8.48 | | WT% | XRF |
| CAO | 7.9 | | WT% | XRF |
| NA2O | 2.88 | | WT% | XRF |
| K2O | 1.21 | | WT% | XRF |
| P2O5 | 0.23 | | WT% | XRF |
| LOI | 3.22 | | WT% | XRF |
