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Sample 2E42A
NavDat sample number 14623 · ANDESITE
Sample
| Sample ID | 2E42A |
|---|
| Rock name | ANDESITE |
|---|
| Rock type | PLUTONIC |
|---|
| Composition | INTERMEDIATE |
|---|
| Material | IGNEOUS |
|---|
| Comment | Porphyritic pyroxene andesite |
|---|
Location
| Latitude | 46.2732 |
|---|
| Longitude | -122.053 |
|---|
| Location | Mt. St. Helens |
|---|
| State / province | Washington |
|---|
Age
| Age (Ma) | Error | Min | Max | Geologic age | Dated by |
|---|
| 25.05 |
|
16.4 |
33.7 |
|
|
Analyses
Whole rock
| Item | Value | Std. dev. | Unit | Method |
|---|
| SIO2 | 58 | | WT% | AAS |
| AL2O3 | 18.2 | | WT% | AAS |
| FE2O3 | 3.99 | | WT% | AAS |
| FEO | 3.2 | | WT% | AAS |
| MGO | 2.21 | | WT% | AAS |
| CAO | 6.76 | | WT% | AAS |
| NA2O | 4.36 | | WT% | AAS |
| K2O | 0.8 | | WT% | AAS |
| H2O | 0.7 | | WT% | AAS |
| H2O_MINUS | 0.27 | | WT% | AAS |
| TIO2 | 1.16 | | WT% | AAS |
| P2O5 | 0.22 | | WT% | AAS |
| MNO | 0.14 | | WT% | AAS |
| TOTAL | 99.81 | | WT% | UNKNOWN |
