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Sample MB-156b
NavDat sample number 75335 · ANDESITE
Sample
| Sample ID | MB-156b |
|---|
| Rock name | ANDESITE |
|---|
| Rock type | PLUTONIC |
|---|
| Composition | INTERMEDIATE |
|---|
| Material | IGNEOUS |
|---|
| Comment | andesite-dacite dike |
|---|
Location
| Latitude | 48.813 |
|---|
| Longitude | -121.822 |
|---|
| 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 | 53.3 | | WT% | XRF |
| TIO2 | 1.19 | | WT% | XRF |
| AL2O3 | 16.62 | | WT% | XRF |
| FEOT | 8.06 | | WT% | XRF |
| MNO | 0.14 | | WT% | XRF |
| MGO | 6.94 | | WT% | XRF |
| CAO | 9.08 | | WT% | XRF |
| NA2O | 3.11 | | WT% | XRF |
| K2O | 0.85 | | WT% | XRF |
| P2O5 | 0.3 | | WT% | XRF |
| LOI | 3.12 | | WT% | XRF |
