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Sample 7R49
NavDat sample number 14627 · RHYOLITE
Sample
| Sample ID | 7R49 |
|---|
| Rock name | RHYOLITE |
|---|
| Rock type | VOLCANIC |
|---|
| Composition | FELSIC |
|---|
| Material | IGNEOUS |
|---|
| Comment | Porphyritic pyroxene rhyolite |
|---|
Location
| Latitude | 46.4478 |
|---|
| Longitude | -122.103 |
|---|
| 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 | 71.3 | | WT% | AAS |
| AL2O3 | 13.3 | | WT% | AAS |
| FE2O3 | 1.11 | | WT% | AAS |
| FEO | 2.07 | | WT% | AAS |
| MGO | 0.88 | | WT% | AAS |
| CAO | 1.97 | | WT% | AAS |
| NA2O | 3.24 | | WT% | AAS |
| K2O | 1.71 | | WT% | AAS |
| H2O | 2.97 | | WT% | AAS |
| H2O_MINUS | 0.86 | | WT% | AAS |
| TIO2 | 0.56 | | WT% | AAS |
| P2O5 | 0.11 | | WT% | AAS |
| MNO | 0.07 | | WT% | AAS |
| TOTAL | 100.16 | | WT% | UNKNOWN |
