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Sample MB-87
NavDat sample number 75350 · ANDESITE
Sample
| Sample ID | MB-87 |
|---|
| Rock name | ANDESITE |
|---|
| Rock type | PLUTONIC |
|---|
| Composition | INTERMEDIATE |
|---|
| Material | IGNEOUS |
|---|
| Comment | intracaldera dike |
|---|
Location
| Latitude | 48.824 |
|---|
| Longitude | -121.726 |
|---|
| State / province | washington |
|---|
| Formation | Intracaldera dikes of intermediate composition |
|---|
Age
| Age (Ma) | Error | Min | Max | Geologic age | Dated by |
|---|
| 0.85 |
|
0.6 |
1.1 |
|
|
Analyses
Whole rock
| Item | Value | Std. dev. | Unit | Method |
|---|
| SIO2 | 62.9 | | WT% | XRF |
| TIO2 | 0.74 | | WT% | XRF |
| AL2O3 | 16.83 | | WT% | XRF |
| FEOT | 4.75 | | WT% | XRF |
| MNO | 0.09 | | WT% | XRF |
| MGO | 2.62 | | WT% | XRF |
| CAO | 4.81 | | WT% | XRF |
| NA2O | 4.22 | | WT% | XRF |
| K2O | 2.39 | | WT% | XRF |
| P2O5 | 0.24 | | WT% | XRF |
| LOI | 2.44 | | WT% | XRF |
