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Sample H-9-15A
NavDat sample number 8949 · RHYOLITE
Sample
| Sample ID | H-9-15A |
|---|
| Rock name | RHYOLITE |
|---|
| Rock type | VOLCANIC |
|---|
| Composition | FELSIC |
|---|
| Material | IGNEOUS |
|---|
| Comment | RHYOLITE COMPOSED OF GLASS-MICROLITES WITH PLAGIOCLASE AND QUARTZ PHENOCRYSTS |
|---|
Location
| Latitude | 42.275 |
|---|
| Longitude | -115.233 |
|---|
| Location | silicic material underlying basalt along small stream SE of Grassmere |
|---|
| State / province | Idaho |
|---|
| Volcanic field | Western Snake River Plain |
|---|
Age
| Age (Ma) | Error | Min | Max | Geologic age | Dated by |
|---|
| 11.22 |
|
10.7 |
11.74 |
|
|
Analyses
Whole rock
| Item | Value | Std. dev. | Unit | Method |
|---|
| SIO2 | 74.09 | | WT% | XRF |
| TIO2 | 0.35 | | WT% | XRF |
| AL2O3 | 11.9 | | WT% | XRF |
| FE2O3 | 2.12 | | WT% | XRF |
| FEO | 0.9 | | WT% | XRF |
| MNO | 0.01 | | WT% | XRF |
| MGO | 0.14 | | WT% | XRF |
| CAO | 0.78 | | WT% | XRF |
| NA2O | 2.76 | | WT% | XRF |
| K2O | 5.12 | | WT% | XRF |
| P2O5 | 0.1 | | WT% | XRF |
| LOI | 1.12 | | WT% | XRF |
| TOTAL | 99.41 | | WT% | XRF |
| RB | 187 | | PPM | XRF |
| SR | 63 | | PPM | XRF |
| BA | 1456 | | PPM | XRF |
| ZR | 507 | | PPM | XRF |
| V | 25 | | PPM | XRF |
| Y | 127 | | PPM | XRF |
