Sample 7
NavDat sample number 4637 · ANDESITE
Sample
| Sample ID | 7 |
|---|---|
| Rock name | ANDESITE |
| Rock type | VOLCANIC |
| Composition | INTERMEDIATE |
| Material | IGNEOUS |
| Comment | porphyritic with pilotaxitic groundmass |
Location
| Latitude | 39.2058 |
|---|---|
| Longitude | -121.819 |
| Location | summit of South Butte |
| 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 | 60.84 | WT% | XRF | |
| TIO2 | 0.18 | WT% | XRF | |
| AL2O3 | 17.86 | WT% | XRF | |
| FEO | 1.72 | WT% | XRF | |
| FE2O3 | 2.59 | WT% | XRF | |
| MNO | 0.16 | WT% | XRF | |
| CAO | 5.24 | WT% | XRF | |
| MGO | 3.05 | WT% | XRF | |
| NA2O | 3.8 | WT% | XRF | |
| K2O | 2.48 | WT% | XRF | |
| P2O5 | 0.26 | WT% | XRF | |
| H2O_MINUS | 1.2 | WT% | XRF | |
| H2O_PLUS | 0.5 | WT% | XRF | |
| TOTAL | 99.88 | WT% | XRF | |
| NB | 10 | PPM | XRF | |
| ZR | 125 | PPM | XRF | |
| Y | 20 | PPM | XRF | |
| SR | 725 | PPM | XRF | |
| RB | 85 | PPM | XRF | |
| TH | 5 | PPM | XRF | |
| PB | 20 | PPM | XRF | |
| GA | 20 | PPM | XRF | |
| ZN | 55 | PPM | XRF | |
| CU | 35 | PPM | XRF | |
| NI | 95 | PPM | XRF | |
| V | 110 | PPM | XRF | |
| CR | 250 | PPM | XRF | |
| BA | 1050 | PPM | XRF | |
| CE | 45 | PPM | XRF | |
| ND | 20 | PPM | XRF | |
| PR | 10 | PPM | XRF | |
| LA | 25 | PPM | XRF | |
| CL | 220 | PPM | XRF | |
| S | 130 | PPM | XRF |