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Sample 8R128
NavDat sample number 14631 · ANDESITE
Sample
| Sample ID | 8R128 |
|---|
| Rock name | ANDESITE |
|---|
| Rock type | PLUTONIC |
|---|
| Composition | INTERMEDIATE |
|---|
| Material | IGNEOUS |
|---|
| Comment | Phyric vitric andesite |
|---|
Location
| Latitude | 46.4383 |
|---|
| Longitude | -122.204 |
|---|
| Location | Mt. St. Helens |
|---|
| State / province | Washington |
|---|
Age
| Age (Ma) | Error | Min | Max | Geologic age | Dated by |
|---|
| 9 |
|
8 |
10 |
|
|
Analyses
Whole rock
| Item | Value | Std. dev. | Unit | Method |
|---|
| SIO2 | 54.7 | | WT% | AAS |
| AL2O3 | 15.8 | | WT% | AAS |
| FE2O3 | 3.3 | | WT% | AAS |
| FEO | 6.1 | | WT% | AAS |
| MGO | 3.3 | | WT% | AAS |
| CAO | 7.4 | | WT% | AAS |
| NA2O | 3.5 | | WT% | AAS |
| K2O | 1.5 | | WT% | AAS |
| H2O | 1.5 | | WT% | AAS |
| H2O_MINUS | 0.64 | | WT% | AAS |
| TIO2 | 1.5 | | WT% | AAS |
| P2O5 | 0.55 | | WT% | AAS |
| MNO | 0.19 | | WT% | AAS |
| TOTAL | 100.04 | | WT% | UNKNOWN |
