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Sample MB-272
NavDat sample number 75352 · ANDESITE
Sample
| Sample ID | MB-272 |
|---|
| Rock name | ANDESITE |
|---|
| Rock type | PLUTONIC |
|---|
| Composition | INTERMEDIATE |
|---|
| Material | IGNEOUS |
|---|
| Comment | intracaldera dike |
|---|
Location
| Latitude | 48.811 |
|---|
| Longitude | -121.732 |
|---|
| 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 | 56.58 | | WT% | XRF |
| TIO2 | 1.03 | | WT% | XRF |
| AL2O3 | 18.13 | | WT% | XRF |
| FEOT | 6.94 | | WT% | XRF |
| MNO | 0.15 | | WT% | XRF |
| MGO | 4.33 | | WT% | XRF |
| CAO | 6.87 | | WT% | XRF |
| NA2O | 4.03 | | WT% | XRF |
| K2O | 1.25 | | WT% | XRF |
| P2O5 | 0.29 | | WT% | XRF |
| LOI | 4.04 | | WT% | XRF |
