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Sample MB-521
NavDat sample number 75499 · ANDESITE
Sample
| Sample ID | MB-521 |
|---|
| Rock name | ANDESITE |
|---|
| Rock type | VOLCANIC |
|---|
| Composition | INTERMEDIATE |
|---|
| Material | IGNEOUS |
|---|
Location
| Latitude | 48.739 |
|---|
| Longitude | -121.889 |
|---|
| State / province | washington |
|---|
| Formation | Stacks of lavas and breccias extend radially to make up Seward Peak, Lee Promontory |
|---|
Age
| Age (Ma) | Error | Min | Max | Geologic age | Dated by |
|---|
| 0.495 |
|
0.477 |
0.513 |
|
|
Analyses
Whole rock
| Item | Value | Std. dev. | Unit | Method |
|---|
| SIO2 | 51.34 | | WT% | XRF |
| TIO2 | 1.33 | | WT% | XRF |
| AL2O3 | 17.23 | | WT% | XRF |
| FEOT | 8.97 | | WT% | XRF |
| MNO | 0.16 | | WT% | XRF |
| MGO | 6.61 | | WT% | XRF |
| CAO | 9.57 | | WT% | XRF |
| NA2O | 3.44 | | WT% | XRF |
| K2O | 0.67 | | WT% | XRF |
| P2O5 | 0.28 | | WT% | XRF |
| LOI | 1.26 | | WT% | XRF |
