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Sample MB-500
NavDat sample number 75339 · ANDESITE
Sample
| Sample ID | MB-500 |
|---|
| Rock name | ANDESITE |
|---|
| Rock type | PLUTONIC |
|---|
| Composition | INTERMEDIATE |
|---|
| Material | IGNEOUS |
|---|
| Comment | andesite-dacite dike |
|---|
Location
| Latitude | 48.826 |
|---|
| Longitude | -121.838 |
|---|
| State / province | washington |
|---|
| Formation | Extracaldera andesite-dacite dikes of Chowder Ridge and Dobbs Cleaver |
|---|
Age
| Age (Ma) | Error | Min | Max | Geologic age | Dated by |
|---|
| 1.156 |
|
1.026 |
1.286 |
|
|
Analyses
Whole rock
| Item | Value | Std. dev. | Unit | Method |
|---|
| SIO2 | 60.98 | | WT% | XRF |
| TIO2 | 0.84 | | WT% | XRF |
| AL2O3 | 17.42 | | WT% | XRF |
| FEOT | 5.89 | | WT% | XRF |
| MNO | 0.13 | | WT% | XRF |
| MGO | 2.54 | | WT% | XRF |
| CAO | 5.62 | | WT% | XRF |
| NA2O | 4.05 | | WT% | XRF |
| K2O | 1.86 | | WT% | XRF |
| P2O5 | 0.28 | | WT% | XRF |
| LOI | 2.21 | | WT% | XRF |
