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Sample F-6
NavDat sample number 5155 · ANDESITE
Sample
| Sample ID | F-6 |
|---|
| Rock name | ANDESITE |
|---|
| Rock type | VOLCANIC |
|---|
| Composition | INTERMEDIATE |
|---|
| Material | IGNEOUS |
|---|
| Comment | dark grey to black trachyandesites |
|---|
Location
| Latitude | 38.2776 |
|---|
| Longitude | -119.396 |
|---|
| Location | Little Walker Center |
|---|
| State / province | California |
|---|
| Location comment | erupted around the margin and onto the floor of the caldera |
|---|
Age
| Age (Ma) | Error | Min | Max | Geologic age | Dated by |
|---|
| 9.65 |
|
8.6 |
10.7 |
|
|
Analyses
Whole rock
| Item | Value | Std. dev. | Unit | Method |
|---|
| SIO2 | 54.18 | | WT% | XRF |
| TIO2 | 1 | | WT% | XRF |
| AL2O3 | 17.35 | | WT% | XRF |
| FE2O3 | 7.8 | | WT% | XRF |
| FEO | 7.02 | | WT% | XRF |
| MNO | 0.12 | | WT% | XRF |
| MGO | 5.37 | | WT% | XRF |
| CAO | 7.68 | | WT% | XRF |
| NA2O | 3.11 | | WT% | XRF |
| K2O | 2.55 | | WT% | XRF |
| P2O5 | 0.43 | | WT% | XRF |
| LOI | 0.54 | | WT% | XRF |
| TOTAL | 99.6 | | WT% | XRF |
| RB | 65.9 | | PPM | XRF |
| SR | 1360 | | PPM | XRF |
