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Sample MB-478
NavDat sample number 75282 · ANDESITE
Sample
| Sample ID | MB-478 |
|---|
| Rock name | ANDESITE |
|---|
| Rock type | VOLCANIC |
|---|
| Composition | INTERMEDIATE |
|---|
| Material | IGNEOUS |
|---|
Location
| Latitude | 48.817 |
|---|
| Longitude | -121.744 |
|---|
| State / province | washington |
|---|
| Formation | dikes and lava-flow remnants along Ptarmigan Ridge; |
|---|
Age
| Age (Ma) | Error | Min | Max | Geologic age | Dated by |
|---|
| 0.31 |
|
0.31 |
0.3 |
|
|
Analyses
Whole rock
| Item | Value | Std. dev. | Unit | Method |
|---|
| SIO2 | 62.71 | | WT% | XRF |
| TIO2 | 0.89 | | WT% | XRF |
| AL2O3 | 16.81 | | WT% | XRF |
| FEOT | 4.99 | | WT% | XRF |
| MNO | 0.09 | | WT% | XRF |
| MGO | 2.18 | | WT% | XRF |
| CAO | 4.84 | | WT% | XRF |
| NA2O | 4.46 | | WT% | XRF |
| K2O | 2.39 | | WT% | XRF |
| P2O5 | 0.26 | | WT% | XRF |
| LOI | 1.76 | | WT% | XRF |
