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Sample F-20
NavDat sample number 5160 · ANDESITE
Sample
| Sample ID | F-20 |
|---|
| Rock name | ANDESITE |
|---|
| Rock type | VOLCANIC |
|---|
| Composition | INTERMEDIATE |
|---|
| Material | IGNEOUS |
|---|
| Comment | flows of uncertain age |
|---|
Location
| Latitude | 38.3621 |
|---|
| Longitude | -119.377 |
|---|
| Location | Little Walker Center |
|---|
| State / province | California |
|---|
| Location comment | outside of the caldera |
|---|
Age
| Age (Ma) | Error | Min | Max | Geologic age | Dated by |
|---|
| 33.4 |
|
1.8 |
65 |
Tertiary |
|
Analyses
Whole rock
| Item | Value | Std. dev. | Unit | Method |
|---|
| SIO2 | 56.63 | | WT% | XRF |
| TIO2 | 0.93 | | WT% | XRF |
| AL2O3 | 17.89 | | WT% | XRF |
| FE2O3 | 6.76 | | WT% | XRF |
| FEO | 6.08 | | WT% | XRF |
| MNO | 0.14 | | WT% | XRF |
| MGO | 4.06 | | WT% | XRF |
| CAO | 6.84 | | WT% | XRF |
| NA2O | 3.76 | | WT% | XRF |
| K2O | 2.31 | | WT% | XRF |
| P2O5 | 0.36 | | WT% | XRF |
| LOI | 0.63 | | WT% | XRF |
| TOTAL | 99.7 | | WT% | XRF |
| RB | 55.9 | | PPM | XRF |
| SR | 1042 | | PPM | XRF |
| SR87_SR86 | 0.7056 | | | MS |
