Sample 2
NavDat sample number 4632 · ANDESITE
Sample
| Sample ID | 2 |
|---|---|
| Rock name | ANDESITE |
| Rock type | VOLCANIC |
| Composition | INTERMEDIATE |
| Material | IGNEOUS |
| Comment | porphyritic with pilotaxitic groundmass |
Location
| Latitude | 39.2218 |
|---|---|
| Longitude | -121.8 |
| Location | columnar dike trending NW near 900 ft contour in creek bed |
| State / province | California |
| Volcanic field | Sutter Buttes |
Age
| Age (Ma) | Error | Min | Max | Geologic age | Dated by |
|---|---|---|---|---|---|
| 1.75 | 1.5 | 2 |
Analyses
Whole rock
| Item | Value | Std. dev. | Unit | Method |
|---|---|---|---|---|
| SIO2 | 56.49 | WT% | XRF | |
| TIO2 | 0.52 | WT% | XRF | |
| AL2O3 | 16.86 | WT% | XRF | |
| FEO | 2.78 | WT% | XRF | |
| FE2O3 | 2.47 | WT% | XRF | |
| MNO | 0.14 | WT% | XRF | |
| CAO | 6.56 | WT% | XRF | |
| MGO | 6.03 | WT% | XRF | |
| NA2O | 3.18 | WT% | XRF | |
| K2O | 1.52 | WT% | XRF | |
| P2O5 | 0.16 | WT% | XRF | |
| H2O_MINUS | 1.87 | WT% | XRF | |
| H2O_PLUS | 1.23 | WT% | XRF | |
| TOTAL | 99.81 | WT% | XRF | |
| ZR | 125 | PPM | XRF | |
| Y | 25 | PPM | XRF | |
| SR | 750 | PPM | XRF | |
| RB | 70 | PPM | XRF | |
| TH | -5 | PPM | XRF | |
| PB | 10 | PPM | XRF | |
| GA | 15 | PPM | XRF | |
| ZN | 60 | PPM | XRF | |
| CU | 35 | PPM | XRF | |
| NI | 165 | PPM | XRF | |
| V | 120 | PPM | XRF | |
| CR | 420 | PPM | XRF | |
| BA | 1110 | PPM | XRF | |
| CE | 55 | PPM | XRF | |
| ND | 25 | PPM | XRF | |
| PR | 10 | PPM | XRF | |
| LA | 25 | PPM | XRF | |
| CL | 140 | PPM | XRF | |
| S | 70 | PPM | XRF |